A Learning Object Repository for Curriculum Equity

Khan Academy Web Links Content Package (2020)

  • Khan Academy

    3531 Individual Titles
    • 2-Dimensional Momentum Problem
    • 2-Dimensional Momentum Problem (Part 2)
    • 2003 AIME II Problem 11.avi
    • 2003 AIME II Problem 14
    • 2003 AIME II Problem 7
    • 2003 AIME II Problem 8
    • 20th Century Capitalism and Regulation in the United States
    • 30-60-90 Triangle Example Problem
    • 30-60-90 Triangle Side Ratios Proof
    • 30-60-90 Triangles II
    • 401(k)s
    • 45-45-90 Triangle Side Ratios
    • 45-45-90 Triangles
    • A Firm’s Marginal Product Revenue Curve
    • A Look at a Seductive but Wrong Gibbs/ Spontaneity Proof
    • A Universe Smaller than the Observable
    • A1C Levels
    • About the SAT: Content Changes to the New SAT
    • About the SAT: Format Changes to the New SAT
    • About the SAT: Introduction to the SAT Math Test
    • About the SAT: Introduction to the SAT Reading Test
    • About the SAT: Introduction to the SAT Writing & Language Test
    • Absolute Inequalities 2
    • Absolute Value 1
    • Absolute Value and Number Lines
    • Absolute Value as Distance Between Numbers
    • Absolute Value Equation Example 2
    • Absolute Value Equations
    • Absolute Value Equations 1
    • Absolute Value Equations 2
    • Absolute Value Equations Example 1
    • Absolute value inequalities Example 1
    • Absolute Value Inequalities Example 2
    • Absolute value inequalities example 3
    • Absolute Value of Integers
    • Abstract-ness
    • Acceleration
    • Acceleration Due to Gravity at the Space Station
    • Acceleration for Aircraft Carrier Takeoff
    • Accrual Basis of Accounting
    • Accumulating Foreign Currency Reserves
    • Acid Base Introduction
    • Acid Base Titration
    • Acquisitions with Shares
    • Actual CPI-U Basket of Goods
    • Actual Option Quotes
    • Acute Obtuse and Right Angles
    • Acute Right and Obtuse Angles
    • Ad Reinhardt, Abstract Painting
    • Adding 1 vs. Adding 10
    • Adding 10 or 100
    • Adding 5 + 3 + 6
    • Adding 7 + 6
    • Adding 8 + 7
    • Adding and Simplifying Radicals
    • Adding and Subtracting Fractions
    • Adding and Subtracting Fractions, Decimals and Percentages (1)
    • Adding and Subtracting Fractions, Decimals and Percentages (2)
    • Adding and Subtracting Multiple Fractions with Unlike Denominators
    • Adding and Subtracting Negative Numbers
    • Adding and Subtracting Pieces of Fruit
    • Adding and Subtracting Polynomials 1
    • Adding and Subtracting Polynomials 2
    • Adding and Subtracting Polynomials 3
    • Adding and Subtracting Rational Expressions
    • Adding and Subtracting Rational Expressions 1
    • Adding and Subtracting Rational Expressions 2
    • Adding and Subtracting Rational Expressions 3
    • Adding and Subtracting Real Numbers
    • Adding and Subtracting Real Numbers Application
    • Adding by Getting to a Group of 10 First
    • Adding Complex Numbers
    • Adding Decimals
    • Adding Decimals (Example 1)
    • Adding Decimals (Example 2)
    • Adding Decimals (Old)
    • Adding Decimals Word Problem
    • Adding Demand Curves
    • Adding Different Units for Weight
    • Adding Different Units of Length
    • Adding Fractions (ex 1)
    • Adding Fractions With Different Signs
    • Adding Fractions With Like Denominators
    • Adding Fractions With Unlike Denominators
    • Adding Fractions with Unlike Denominators
    • Adding Fractions with Unlike Denominators Word Problem
    • Adding Hundreds, Tens and Ones
    • Adding Integers With Different Signs
    • Adding Mixed Numbers
    • Adding Mixed Numbers Introduction
    • Adding Mixed Numbers with Regrouping
    • Adding Mixed Numbers With Unlike Denominators
    • Adding Mixed Numbers Word Problem
    • Adding Negative Numbers
    • Adding Negative Numbers on a Number Line
    • Adding Polynomials
    • Adding Rational Expressions
    • Adding Real Numbers Application
    • Adding Real Numbers With Different Signs
    • Adding Subtracting Mixed Numbers 0.5 (ex 1)
    • Adding Subtracting Mixed Numbers 0.5 (ex 2)
    • Adding Subtracting Mixed Numbers 1 (ex 1)
    • Adding Subtracting Mixed Numbers 1 (ex 2)
    • Adding Tenths and Hundredths as Fractions
    • Adding Three-Digit Numbers
    • Adding Three-Digit Numbers with Regrouping
    • Adding Three-Digit Numbers Without Regrouping
    • Adding to 10
    • Adding Two-Digit Numbers Without Regrouping (Example 1)
    • Adding Two-Digit Numbers Without Regrouping (Example 2)
    • Adding Whole Numbers and Applications 1
    • Adding Whole Numbers and Applications 2
    • Adding Whole Numbers and Applications 3
    • Adding Whole Numbers and Applications 4
    • Adding/Subtracting Negative Numbers
    • Adding: Why Carrying Works
    • Addition 2
    • Addition 3
    • Addition 4
    • Addition and Subtraction with Significant Figures
    • Addition and Subtraction Within 10
    • Addition and Subtraction Word Problems: Basketball Game
    • Addition and Subtraction Word Problems: Exercising Gorillas and Cookies
    • Addition and Subtraction Word Problems: Fence Posts for Horses
    • Addition and Subtraction Word Problems: Losing Tennis Balls
    • Addition and Subtraction Word Problems: Sea Monsters and Superheroes
    • Addition and Subtraction Word Problems: Snow on Friday
    • Addition and Subtraction Word Problems: Spinning Wheel
    • Addition and Subtraction Word Problems: Spots on a Die
    • Addition and Subtraction Word Problems: Starfish
    • Addition and Subtraction Word Problems: Using Crayons
    • Addition Elimination Method 1
    • Addition Elimination Method 2
    • Addition Elimination Method 3
    • Addition Elimination Method 4
    • Addition Rule for Probability
    • Addition Using Groups of 10 and 100
    • Addition with Regrouping
    • Addition Word Problems Within 10
    • Adequacy of the Lateral Cervical Spine X-Ray
    • Advanced JS: Games & Visualizations: 3D Shapes
    • Advanced JS: Games & Visualizations: Buttons
    • Advanced JS: Games & Visualizations: Introduction to Games & Visualizations
    • Advanced JS: Games & Visualizations: Making a Memory Game
    • Advanced JS: Games & Visualizations: Making a Side Scroller: Hoppy Beaver
    • Advanced JS: Games & Visualizations: Scene Management
    • Advanced JS: Games & Visualizations: Transformations
    • Advanced JS: Natural Simulations: Angular Movement
    • Advanced JS: Natural Simulations: Forces
    • Advanced JS: Natural Simulations: Introduction to Natural Simulations
    • Advanced JS: Natural Simulations: Noise
    • Advanced JS: Natural Simulations: Oscillations
    • Advanced JS: Natural Simulations: Particle Systems
    • Advanced JS: Natural Simulations: Randomness
    • Advanced JS: Natural Simulations: Vectors
    • Advanced ratio problems
    • Age word problems 1
    • Age word problems 2
    • Age word problems 3
    • Aggregate Demand
    • Airbus A380 Take-off Distance
    • Airbus A380 Take-off Time
    • Alberto Giacometti, The Palace at 4 a.m.
    • Albrecht Altdorfer, The Battle of Issus
    • Albrecht Durer, Self-Portrait
    • Albrecht Durer, The Four Apostles
    • Albrecht Durer, The Large Piece of Turf
    • Alexander Sarcophagus, The
    • Alexej von Jawlensky, Young Girl in a Flowered Hat
    • Algebra: Equation of a line
    • Algebra: graphing lines 1
    • Algebra: Linear Equations 4
    • Algebra: Slope
    • Algebra: Slope 2
    • Algebra: Slope 3
    • Algebra: Slope and Y-intercept intuition
    • Algebra: Solving Inequalities
    • Algebraic Expression Least Common Multiple
    • Algebraic Expressions Word Problem (1)
    • Algebraic Expressions Word Problem (2)
    • Algebraic Long Division
    • Algebraic Midpoint of a Segment
    • Algebraic Word Problem
    • Algorithms: Asymptotic Notation
    • Algorithms: Binary Search
    • Algorithms: Breadth-First Search
    • Algorithms: Further Learning
    • Algorithms: Graph Representation
    • Algorithms: Insertion Sort
    • Algorithms: Introduction to Algorithms
    • Algorithms: Merge Sort
    • Algorithms: Quick Sort
    • Algorithms: Recursive Algorithms
    • Algorithms: Selection Sort
    • Algorithms: Towers of Hanoi
    • Allende and Pinochet in Chile
    • Allocative Efficiency and Marginal Benefit
    • Altar of Augustan Peace
    • Alternate Mental Subtraction Method
    • Alternate Proof to Induction for Integer Sum
    • Alternate Solution to Ratio Problem (HD Version)
    • Alternative Minimum Tax
    • Ambrogio Lorenzetti, The Allegory of Good and Bad Government
    • American Call Options
    • American Put Options
    • American-Chinese Debt Loop
    • Amortization
    • Amortization and Depreciation
    • Amplitude, Period, Frequency and Wavelength of Periodic Waves
    • AMT Overview
    • An IPO
    • Analyzing a Dot Plot: Redistributing Trail Mix
    • Analyzing Clusters, Gaps, Peaks and Outliers for Distributions
    • Anatomy of a Muscle Cell
    • Anatomy of a Neuron
    • Ancient Greek Temples at Paestum
    • Andrea Pozzo, Glorification of Saint Ignatius
    • Andy Warhol, Cambell’s Soup Cans: Why is this Art?
    • Andy Warhol, Gold Marilyn Monroe
    • Angle Basics
    • Angle Bisector Theorem Examples
    • Angle Bisector Theorem Proof
    • Angle Game (part 2)
    • Angle Measure Word Problem: Apple Pie
    • Angle Measurement and Circle Arcs
    • Angle Word Problem: Stove Dial
    • Angles (part 2)
    • Angles (part 3)
    • Angles at the intersection of two lines
    • Angles formed between transversals and parallel lines
    • Angles Formed by Parallel Lines and Transversals
    • Angles of parallel lines 2
    • Animation Director: How I Got My Job and Where I’m Going
    • Animation Director: My Budget and Planning for the Future
    • Animation Director: What I Do and How Much I Make
    • Annibale Carracci, Crucifixion and Lamentation
    • Annual Interest Varying with Debt Maturity
    • Annual Percentage Rate (APR) and Effective APR
    • Another Isosceles Example Problem
    • Another Mass Composition Problem
    • Another Percent Word Problem
    • Another Quantitative Easing Video
    • Another Stoichiometry Example in a Solution
    • Another Take on the Rate Problem
    • Anthony Van Dyck, Charles I at the Hunt
    • Antoni Gaudi, Church of the Sagrada Familia
    • Ape Clarification
    • Appealing a Financial Aid Package
    • Application of Addition of Real Numbers
    • Application of Similar Triangles
    • Application of the Pythagorean Theorem in a Three-Dimensional Shape
    • Application Problem With Graph
    • Application Problem With Quadratic Formula
    • Application Problems Involving Units of Weight
    • Application Problems With Equation in One Variable
    • Applications Problem Factoring Quadratics
    • Applying for Financial Aid when Facing Immigration Challenges
    • Applying Logarithms
    • Applying Logarithms 2
    • Applying Quadratic Functions 1
    • Applying Quadratic Functions 2
    • Applying Quadratic Functions 3
    • Applying Radical Equations 1
    • Applying Radical Equations 2
    • Applying Radical Equations 3
    • Applying Rational Equations 1
    • Applying Rational Equations 2
    • Applying Rational Equations 3
    • Applying the Quadratic Formula
    • Applying to the Right Number of Colleges
    • Appomattox Court House and Lincoln’s Assassination
    • Approximating Square Roots
    • Approximating with Powers of 10
    • Apsidal Precession (Perihelion Precession) and Milankovitch Cycles
    • Arbitrage Basics
    • Arbitraging Futures Contract
    • Arbitraging Futures Contracts II
    • Arch of Constantine
    • Architectural Designer: How I Got My Job and Where I’m Going
    • Architectural Designer: My Budget and Planning for the Future
    • Architectural Designer: What I Do and How Much I Make
    • Are Hedge Funds Bad?
    • Are Southern Hemisphere Seasons More Severe?
    • Area and Perimeter
    • Area and Perimeter of Composite Figures
    • Area and Perimeter Word Problem: Comparing Areas of Rectangles
    • Area and Perimeter Word Problem: Table Dimensions
    • Area and Perimeter Word Problem: Width of a Dog Pen
    • Area Models to Visualize Division Using Place Value
    • Area of a Circle
    • Area of a circle
    • Area of a Kite
    • Area of a Parallelogram
    • Area of a Parallelogram
    • Area of a Parallelogram on the Coordinate Plane
    • Area of a Regular Hexagon
    • Area of a Shaded Region
    • Area of a Trapezoid
    • Area of a Trapezoid
    • Area of a Triangle
    • Area of an Equilateral Triangle
    • Area of Diagonal Generated Triangles of Rectangle are Equal
    • Area of Inscribed Equilateral Triangle (some basic trig used)
    • Area of Koch Snowflake (part 1) - Advanced
    • Area of Koch Snowflake (part 2) - Advanced
    • Area of Rectangles and the Distributive Property
    • Arithmetic Properties with Negative Numbers
    • Art & Context
    • Art Historical Analysis: A Basic Introduction Using Goya’s Third of May, 1808
    • Artemisia Gentileschi, Judith and Holofernes (Judith Slaying Holofernes)
    • Artemision Zeus or Poseidon
    • Assessing Alignment of the Lateral Cervical (neck) X-Ray
    • Assistant Hotel Manager: How I Got My Job and Where I’m Going
    • Assistant Hotel Manager: My Budget and Planning for the Future
    • Assistant Hotel Manager: What I Do and How Much I Make
    • Associative Law of Addition
    • Associative Law of Multiplication
    • Associative Property for Multiplication
    • Athenian Agora and the Experiment in Democracy, The
    • ATP: Adenosine Triphosphate
    • Audio Engineer: How I Got My Job and Where I’m Going
    • Audio Engineer: My Budget and Planning for the Future
    • Audio Engineer: Running a Freelance Business
    • Audio Engineer: What I Do and How Much I Make
    • Auguste Rodin, The Gates of Hell
    • Author: How I Got My Job and Where I’m Going
    • Author: My Budget and Planning for the Future
    • Author: What I Do and How Much I Make
    • Author: Working with an Agent
    • Automotive Mechanic: What I Do and How Much I Make
    • Average Velocity for Constant Acceleration
    • Averages
    • Avoiding Common Admissions Essay Mistakes
    • Axis of Symmetry
    • Aztec Feathered Headdress
    • Aztec Sun Stone (Calendar Stone)
    • B Lymphocytes (B Cells)
    • Back of Envelope Office Space Conundrum
    • Backwardation
    • Backwardation Bullish or Bearish
    • Bacteria
    • Bacterial Meningitis
    • Bailout 1: Liquidity vs. Solvency
    • Bailout 10: Moral Hazard
    • Bailout 11: Why These CDOs Could be Worth Nothing
    • Bailout 12: Lone Star Transaction
    • Bailout 13: Does the Bailout Have a Chance of Working?
    • Bailout 14: Possible Solution
    • Bailout 15: More on the Solution
    • Bailout 2: Book Value
    • Bailout 3: Book Value vs. Market Value
    • Bailout 4: Mark-to-Model vs. Mark-to-Market
    • Bailout 5: Paying Off the Debt
    • Bailout 6: Getting an Equity Infusion
    • Bailout 7: Bank Goes Into Bankruptcy
    • Bailout 8: Systemic Risk
    • Bailout 9: Paulson’s Plan
    • Balance of Payments - Capital Account
    • Balance of Payments - Current Account
    • Balance Sheet and Income Statement Relationship
    • Balancing Chemical Equations
    • Banking 1
    • Banking 10: Introduction to Leverage
    • Banking 11: A Reserve Bank
    • Banking 12: Treasuries: Government Debt
    • Banking 13: Open Market Operations
    • Banking 14: Fed Funds Rate
    • Banking 15: More on the Fed Funds Rate
    • Banking 16: Why Target Rates vs. Money Supply
    • Banking 17: What Happened to the Gold?
    • Banking 18: Big Picture Discussion
    • Banking 2: A Bank’s Income Statement
    • Banking 3: Fractional Reserve Banking
    • Banking 4: Multiplier Effect and the Money Supply
    • Banking 5: Introduction to Bank Notes
    • Banking 6: Bank Notes and Checks
    • Banking 7: Giving Out Loans Without Giving Out Gold
    • Banking 8: Reserve Ratios
    • Banking 9: More on Reserve Ratios
    • Barnett Newman, Onement I
    • Barnett Newman, Vir Heroicus Sublimis
    • Base Ten Numbers and Place Value
    • Basic Addition
    • Basic Capital Structure Differences
    • Basic Cash Flow Statement
    • Basic Complex Analysis
    • Basic Leveraged Buyout (LBO)
    • Basic Linear Function
    • Basic Multiplication
    • Basic Probability
    • Basic Rate Problem
    • Basic Shapes
    • Basic Shorting
    • Basic Subtraction
    • Basic Trigonometry
    • Basic Trigonometry II
    • Basics of US Income Tax Return Schedule
    • Basilica of Constantine, Rome
    • Basilica of San Vitale, Ravenna
    • Bay of Pigs Invasion
    • Becoming a Red Giant
    • Beginnings of Life
    • Benefits and Drawbacks of College Loans
    • Benford’s Law Explanation (Sequel to Mysteries of Benford’s Law)
    • Benvenuto Cellini, Perseus with the Head of Medusa
    • Berthe Morisot, The Mother and Sister of the Artist
    • Best Strategies for Funding College
    • Big Bang Introduction
    • Binary Numbers
    • Binary, Decimals, and Hexadecimal Number Systems
    • Binomial Distribution 1
    • Binomial Distribution 2
    • Binomial Distribution 3
    • Binomial Distribution 4
    • Binomial Theorem (part 1)
    • Binomial Theorem (part 2)
    • Binomial Theorem (part 3)
    • Biodiversity Flourishes in Phanerozoic Eon
    • Birth of Stars
    • Birthday Probability Problem
    • Black Holes
    • Blood Sugar Levels
    • Blue Cross and Blue Shield
    • Boiling Point Elevation and Freezing Point Supression
    • Bonaventura Berlinghieri, Saint Francis Altarpiece
    • Bonds vs. Stocks
    • Box-and-Whisker Plots
    • Breakdown of Gas Prices
    • Breaking Apart Three-Digit Addition Problems
    • Breaking Apart Two-Digit Addition Problems
    • Brief History of the Representation of the Body in Western Painting, A
    • Brief History of the Representation of the Body in Western Sculpture, A
    • Bronze Casting
    • Bronzino & the Mannerist Portrait
    • Buddha of Medicine Bhaishajyaguru (Yaoshi Fo)
    • Budget Line
    • Buffers and Henderson-Hasselbalch
    • Business Office Manager: How I Got My Job and Where I’m Going
    • Business Office Manager: What I Do and How Much I Make
    • C-4 Photosynthesis
    • Calculating a Confidence Interval for a Proportion
    • Calculating Average Velocity or Speed
    • Calculating Dot and Cross Products with Unit Vector Notation
    • Calculating i Raised to Arbitrary Exponents
    • Calculating Real Return in Last Year Dollars
    • Calculating the Square Footage of a House
    • Calculator for Logarithms
    • Calculator for Natural Logarithms
    • Calculator for Powers of 10
    • Calculator for Powers of e
    • Calculus Proof of Centripetal Acceleration Formula
    • Call Option as Leverage
    • Call Payoff Diagram
    • Call Writer Payoff Diagrams
    • CAM Plants
    • Canceling Zeros when Dividing
    • Cancer
    • Cancerous Colon Tissue
    • Capacitance
    • Carbon 14 Dating 2
    • Carbon 14 Dating
    • Carnot Cycle and Carnot Engine
    • Carnot Efficiency 2: Reversing the Cycle
    • Carnot Efficiency 3: Proving that it is the Most Efficient
    • Carry Trade Basics
    • Caryatid & Ionic Column, Erechtheion
    • Cash Accounting
    • Caspar David Friedrich, Abbey Among Oak Trees
    • Caspar David Friedrich, Monk by the Sea
    • Categorize Triangles by Angle Size
    • Categorize Triangles by Side Length or by Angle Size
    • Categorizing Triangles Exercises (1)
    • Categorizing Triangles Exercises (2)
    • Cathedral of Notre Dame de Chartres (Part 1)
    • Cathedral of Notre Dame de Chartres (Part 2)
    • Cathedral of Notre Dame de Chartres (Part 3)
    • Celebrity & Art: Leonardo da Vinci’s Mona Lisa
    • Center of Mass
    • Central Limit Theorem
    • Centripetal Force and Acceleration Intuition
    • Cepheid Variables 1
    • Cervical Spine Protection in Airway Management
    • Challenging Perimeter Problem
    • Challenging Similarity Problem
    • Challenging Triangle Angle Problem
    • Change of State Example
    • Changes in Income, Population or Preferences
    • Changes in Market Equilibrium
    • Changing an Improper Fraction to a Mixed Number
    • Chapter 11: Bankruptcy Restructuring
    • Chapter 7: Bankruptcy Liquidation
    • Charlemagne, Part 1: An Introduction
    • Charlemagne, Part 2: The Carolingian Revival
    • Charles Barry and A.W.N. Pugin, Palace of Westminster (Houses of Parliament)
    • Charles Cooley: Looking Glass Self
    • Charles Garnier, Paris Opera House
    • Charles Willson Peale, Staircase Group (Portrait of Raphaelle Peale and Titian Ramsay Peale)
    • Chef de Cuisine: How I Got My Job and Where I’m Going
    • Chef de Cuisine: My Budget and Planning for the Future
    • Chef de Cuisine: What I Do and How Much I Make
    • Chi-Square Test for Association (Independence)
    • Chi-Square Test for Homogeneity
    • Chi-Square Test Using a Contingency Table
    • Childhood Growth
    • Chilling Water Problem
    • China Buys US Bonds
    • China Keeps Peg But Diversifies Holdings
    • China Pegs to Dollar Keep Trade Imbalance
    • Chinese Central Bank Buying Treasuries
    • Chinese Inflation
    • Choose Pounds or Ounces to Measure Weight
    • Chromosomes, Chromatids, Chromatin, etc.
    • Chronometric Revolution
    • Cimabue, Santa Trinita Madonna, and Giotto, Ognissanti Madonna
    • Circles: Radius, Diameter and Circumference
    • Circuits (Part 1)
    • Circuits (Part 2)
    • Circuits (Part 3)
    • Circuits (Part 4)
    • Circular Flow of Income and Expenditures
    • Circulatory System and the Heart
    • Circumcenter of a Right Triangle
    • Circumcenter of a Triangle
    • Circumference of a Circle
    • Circumference of a Circle
    • City Planner: How I Got My Job and Where I’m Going
    • City Planner: My Budget and Planning for the Future
    • City Planner: What I Do and How Much I Make
    • Classical Orders, The
    • Classifying Shapes by Lines and Angles
    • Claude Monet, Cliff Walk at Pourville
    • Claude Monet, Gare St. Lazare
    • Claude Monet, Poplars
    • Claude Monet, Rouen Cathedral Series
    • Claude Monet, The Argenteuil Bridge
    • Claude Monet, The Water Lilies
    • Clinical Nurse Specialist and Food Entrepreneur: Our Budget and Planning for Our Future
    • Clinical Nurse Specialist: How I Got My Job and Where I’m Going
    • Clinical Nurse Specialist: What I Do and How Much I Make
    • Closed-End Mutual Funds
    • Coatlicue
    • Coin Flipping Example
    • Collateralized Debt Obligation (CDO)
    • Collateralized Debt Obligation Overview
    • Collective Learning
    • College Experience, The
    • Colon Dysplasia
    • Colosseum, The
    • Colossus of Constantine
    • Combinations
    • Combining Like Terms with Distribution
    • Comic Book Artist: How I Got My Job and Where I’m Going
    • Comic Book Artist: What I Do and How Much I Make
    • Commercial Airline Pilot: How I Got My Job and Where I’m Going
    • Commercial Airline Pilot: My Budget and Planning for the Future
    • Commercial Airline Pilot: What I Do and How Much I Make
    • Commercial Real Estate Advisor: How I Got My Job and Where I’m Going
    • Commercial Real Estate Advisor: My Budget and Planning for the Future
    • Commercial Real Estate Advisor: What I Do and How Much I Make
    • Common Denominators: 1/4 and 5/6
    • Common Denominators: 3/5 and 7/2
    • Common Divisibility Examples
    • Common Fractions to Decimals: Halves
    • Common Orthocenter and Centroid
    • Communism
    • Commutative Law of Addition
    • Commutative Law of Multiplication
    • Commutative Property for Addition
    • Comparative Advantage and Absolute Advantage
    • Comparative Advantage Specialization and Gains from Trade
    • Comparing Absolute Values
    • Comparing Absolute Values of Variables on the Number Line
    • Comparing Accrual and Cash Accounting
    • Comparing Areas and Perimeters of Rectangles
    • Comparing Areas of Plots of Land
    • Comparing Celsius and Fahrenheit Temperature Scales
    • Comparing Colleges Based on Campus Activities
    • Comparing Colleges Based on Diversity
    • Comparing Colleges Based on Financial Aid Policies
    • Comparing Colleges Based on Location, Size and Housing
    • Comparing Colleges Based on Majors Offered
    • Comparing Colleges Based on Special Focus or Affiliation
    • Comparing Decimals
    • Comparing Decimals (Example 1)
    • Comparing Decimals (Example 2)
    • Comparing Decimals 4
    • Comparing Decimals Visually
    • Comparing Decimals: Difference in Largest Place Value
    • Comparing Decimals: Ordering from Least to Greatest
    • Comparing Decimals: Ordering from Smallest to Biggest
    • Comparing Distributions with Dot Plots
    • Comparing Dot Plots, Histograms and Box Plots
    • Comparing Fractions
    • Comparing Fractions 2
    • Comparing Fractions of Different Wholes (Part 1)
    • Comparing Fractions of Different Wholes (Part 2)
    • Comparing Fractions on a Number Line
    • Comparing Fractions Visually and on a Number Line
    • Comparing Fractions Visually with Bars
    • Comparing Fractions Visually with Pies
    • Comparing Fractions with Greater Than and Less Than Symbols
    • Comparing Fractions with the Same Denominator
    • Comparing Fractions with the Same Numerator
    • Comparing Irrational Numbers Involving Radicals
    • Comparing Lengths
    • Comparing Linear Functions (Example 1)
    • Comparing Linear Functions (Example 2)
    • Comparing Linear Functions (Example 3)
    • Comparing Linear Functions Word Problem: Walking to School
    • Comparing Linear Functions Word Problem: Walking to Work
    • Comparing Linear Functions Word Problem: Wall Race
    • Comparing Multi-Digit Numbers
    • Comparing Negatives with Variables
    • Comparing Nonprofit vs. For Profit Colleges
    • Comparing Numbers of Objects
    • Comparing Numbers Represented in Different Ways
    • Comparing P-Values to Significance Levels
    • Comparing Place Values (Example 1)
    • Comparing Place Values (Example 2)
    • Comparing Public vs. Private Colleges
    • Comparing Rates
    • Comparing Rational Numbers
    • Comparing Side Lengths After Dilation
    • Comparing Small Numbers on the Number Line
    • Comparing Theoretical to Experimental Probabilities
    • Comparing Universities vs. Liberal Arts Colleges
    • Comparing Values with a Calculator
    • Comparing Vocational vs. 2-Year vs. 4-Year Colleges
    • Comparing Whole Numbers
    • Comparing Whole Numbers 2
    • Comparing Whole Numbers 3
    • Comparing with Multiplication: Basic Exercises
    • Comparison Word Problems
    • Comparison Word Problems: Ages and Heights
    • Comparison Word Problems: Money and Distance
    • Comparison Word Problems: Ron and Hermione Strength
    • Complementary and Supplementary Angles
    • Completing Perfect Square Trinomials
    • Completing the square
    • Completing the Square 1
    • Completing the Square 2
    • Completing the Square 3
    • Completing the Square 4
    • Completing the Square to Solve Quadratic Equations
    • Complex Conjugates
    • Complex Conjugates Example
    • Complex Determinant Example
    • Complex Numbers
    • Complex Numbers (part 1)
    • Complex Numbers (part 2)
    • Complex Roots From the Quadratic Formula
    • Complicated Rational Expressions
    • Components of GDP
    • Composer & Small Business Owner: Advice on Pursuing a Creative Career
    • Composer & Small Business Owner: How I Got My Job and Where I’m Going
    • Composer & Small Business Owner: My Budget and Planning for the Future
    • Composer & Small Business Owner: What I Do and How Much I Make
    • Composing Shapes
    • Compositional and Mechanical Layers of the Earth
    • Compound Inequalities
    • Compound Inequalities 2
    • Compound Inequalities 3
    • Compound Inequalities 4
    • Compound Interest and e (Part 2)
    • Compound Interest and e (Part 3)
    • Compound Interest and e (Part 4)
    • Compound Probability of Independent Events
    • Compound Sample Spaces
    • Computer Programming: A Shorter Shortcut
    • Computer Programming: Adding an Event Listener
    • Computer Programming: Adding Event Listeners with jQuery
    • Computer Programming: Altering Tables After Creation
    • Computer Programming: Animating DOM with SetInterval
    • Computer Programming: Animating Numeric Properties with jQuery
    • Computer Programming: Animating Styles with CSS Animations
    • Computer Programming: Animating Styles with RAF
    • Computer Programming: Animating Visibility with jQuery
    • Computer Programming: Arrays of Objects
    • Computer Programming: Booleans
    • Computer Programming: Chaining jQuery Methods
    • Computer Programming: Changing Attributes
    • Computer Programming: Changing CSS Classes
    • Computer Programming: Changing CSS Styles
    • Computer Programming: Changing Rows with UPDATE and DELETE
    • Computer Programming: Checking DOM Readiness with jQuery
    • Computer Programming: Clarifying with Comments
    • Computer Programming: Coloring with Code
    • Computer Programming: Combining Multiple Joins
    • Computer Programming: Creating Elements from Scratch
    • Computer Programming: Creating Elements with jQuery
    • Computer Programming: CSS : More Text Properties
    • Computer Programming: CSS in the Wild: Google Maps
    • Computer Programming: CSS Zen Garden
    • Computer Programming: CSS: Basics
    • Computer Programming: CSS: Box Model
    • Computer Programming: CSS: Combining Class and Element Selectors
    • Computer Programming: CSS: Descendant Selectors
    • Computer Programming: CSS: Dynamic Pseudo Classes
    • Computer Programming: CSS: Floating Elements
    • Computer Programming: CSS: Font Family
    • Computer Programming: CSS: Font Size
    • Computer Programming: CSS: Font Styles
    • Computer Programming: CSS: Grouping Elements
    • Computer Programming: CSS: Grouping Selectors
    • Computer Programming: CSS: Inheritance
    • Computer Programming: CSS: Positioning
    • Computer Programming: CSS: Selecting by Class
    • Computer Programming: CSS: Specificity
    • Computer Programming: CSS: Using Multiple Classes
    • Computer Programming: CSS: Width Height Overflow
    • Computer Programming: Debugging Web Pages with the Browser Console
    • Computer Programming: Debugging with Println()
    • Computer Programming: Drawing More Shapes with Code
    • Computer Programming: Drawing Triangles with Blocks
    • Computer Programming: Finding Elements by CSS Selector
    • Computer Programming: Finding Elements by ID
    • Computer Programming: Finding Elements with jQuery
    • Computer Programming: Finding Multiple Elements by Tag Name or Class Name
    • Computer Programming: For Loops
    • Computer Programming: Function Parameters
    • Computer Programming: Function Return Values
    • Computer Programming: Functions
    • Computer Programming: Getting Information on Elements with jQuery
    • Computer Programming: HTML: Basics
    • Computer Programming: HTML: Comments
    • Computer Programming: HTML: Images
    • Computer Programming: HTML: Internal Links
    • Computer Programming: HTML: Links
    • Computer Programming: HTML: Lists
    • Computer Programming: HTML: Tables
    • Computer Programming: HTML: Text Emphasis
    • Computer Programming: HTML: Validation
    • Computer Programming: If Statements
    • Computer Programming: If/Else (Part 1)
    • Computer Programming: If/Else (Part 2)
    • Computer Programming: Incrementing Shortcuts
    • Computer Programming: Introduction to Animation
    • Computer Programming: Introduction to Arrays
    • Computer Programming: Introduction to Coloring
    • Computer Programming: Introduction to Drawing
    • Computer Programming: Introduction to Games and Visualizations
    • Computer Programming: Introduction to Objects
    • Computer Programming: Introduction to Programming
    • Computer Programming: Introduction to Variables
    • Computer Programming: Introduction to While Loops
    • Computer Programming: Joining Related Tables
    • Computer Programming: Joining Related Tables with LEFT OUTER JOIN
    • Computer Programming: Joining Tables
    • Computer Programming: Joining Tables to Themselves with Self Joins
    • Computer Programming: jQuery Collections vs. DOM Nodes
    • Computer Programming: Local and Global Variables
    • Computer Programming: Logical Operators
    • Computer Programming: Looping Through Arrays
    • Computer Programming: Looping Through jQuery Collections
    • Computer Programming: Making Animations
    • Computer Programming: Making Drawings with Code
    • Computer Programming: Making Webpages Interactive with Events
    • Computer Programming: Modifying Arrays
    • Computer Programming: Modifying Elements with jQuery
    • Computer Programming: Modifying Objects
    • Computer Programming: More Complex Queries with AND OR
    • Computer Programming: More Drawing
    • Computer Programming: More Form Processing with jQuery
    • Computer Programming: More Mouse Interaction
    • Computer Programming: More Variables
    • Computer Programming: More While Loops
    • Computer Programming: Mouse Interaction
    • Computer Programming: Nested For Loops
    • Computer Programming: Object Inheritance
    • Computer Programming: Object Methods
    • Computer Programming: Object Types
    • Computer Programming: Preventing Default Behavior of Events
    • Computer Programming: Processing a Quiz with jQuery
    • Computer Programming: Processing Forms with Events
    • Computer Programming: Pseudocode
    • Computer Programming: Putting JavaScript in a Web Page
    • Computer Programming: Querying IN Subqueries
    • Computer Programming: Readable Code
    • Computer Programming: Resizing Shapes with Variable Expressions
    • Computer Programming: Restricting Grouped Results with HAVING
    • Computer Programming: Setting InnerHTML and TextContent
    • Computer Programming: Special Processing JavaScript Functions
    • Computer Programming: SQL or SEQUEL?
    • Computer Programming: SQL: Aggregating Data
    • Computer Programming: SQL: Creating a Table and Inserting Data
    • Computer Programming: SQL: Querying the Table
    • Computer Programming: Terrific Text (Part 1)
    • Computer Programming: Terrific Text (Part 2)
    • Computer Programming: The Document Object Model (DOM)
    • Computer Programming: The Power of the Docs
    • Computer Programming: The Window Object
    • Computer Programming: Using a JavaScript Library: Slideshow Library
    • Computer Programming: Using Event Properties in jQuery
    • Computer Programming: Using External CSS Style Sheets
    • Computer Programming: Using Inline CSS Styles
    • Computer Programming: Using Math Expressions
    • Computer Programming: Using the Event Properties
    • Computer Programming: Variable Expressions
    • Computer Programming: Welcome to Making Web Pages Interactive
    • Computer Programming: Welcome to Natural Simulations
    • Computer Programming: Welcome to SQL
    • Computer Programming: Welcome to the Web
    • Computer Programming: What Is an Algorithm and Why Should You Care?
    • Computer Programming: What Is jQuery?
    • Computer Programming: What Is Programming?
    • Computing and Comparing Rates
    • Concave Lenses
    • Conceptual Understanding of Multiplying Fractions and Whole Numbers (Example 1)
    • Conceptual Understanding of Multiplying Fractions and Whole Numbers (Example 2)
    • Conditional Probability and Combinations
    • Confidence Interval Example
    • Confidence Interval for the Slope of a Regression Line
    • Confidence Intervals and Margin of Error
    • Congruent and Similar Triangles
    • Congruent legs and base angles of Isosceles Triangles
    • Congruent Triangle Example 2
    • Congruent Triangle Proof Example
    • Congruent Triangles and SSS
    • Conic Identification 3
    • Conic Sections: Hyperbolas 2
    • Conic Sections: Hyperbolas 3
    • Conic Sections: Intro to Circles
    • Conic Sections: Intro to Ellipses
    • Conic Sections: Intro to Hyperbolas
    • Conjugate Acids and Bases
    • Connecting the Keynesian Cross to the IS-Curve
    • Connection between even and odd numbers and functions
    • Conservation of Angular Momentum
    • Conservation of Energy
    • Consistent and Inconsistent Systems
    • Consistent System of Independent Equations t2
    • Constant Unit Elasticity
    • Constantin Brancusi, Bird in Space
    • Construct a Right Isosceles Triangle
    • Construct a Triangle with Constraints
    • Constructing a Box-and-Whisker Plot (Example 1)
    • Constructing a Box-and-Whisker Plot (Example 2)
    • Constructing a Box-and-Whisker Plot (Example 3)
    • Constructing a Confidence Interval for a Mean Difference with Paired Data
    • Constructing a Probability Model from Observations
    • Constructing a Scatter Plot
    • Constructing Angles
    • Constructing Numerical Expressions
    • Construction Business Owner: How I Got My Job and Where I’m Going
    • Construction Business Owner: What I Do and How Much I Make
    • Consultant: How I Got My Job and Where I’m Going
    • Consultant: My Budget and Planning for the Future
    • Consultant: The Pros and Cons of Traveling for Work
    • Consultant: What I Do and How Much I Make
    • Consumer Surplus Introduction
    • Consumption Function Basics
    • Consumption Function with Income Dependent Taxes
    • Contango
    • Contango and Backwardation Review
    • Contango from Trader Perspective
    • Conversation about Drug Pricing
    • Conversion Between Metric Units
    • Converting a Fraction to a Repeating Decimal
    • Converting Decimals to Fractions (Example 1)
    • Converting Decimals to Fractions (Example 2)
    • Converting Decimals to Fractions (Example 3)
    • Converting Farenheit to Celsius
    • Converting Fractions to Decimals
    • Converting Fractions to Decimals Example
    • Converting Gallons to Quarts Pints and Cups
    • Converting Mixed Numbers and Improper Fractions (ex 1)
    • Converting Mixed Numbers and Improper Fractions (ex 2)
    • Converting Mixed Numbers to Improper Fractions
    • Converting Pounds to Ounces
    • Converting Repeating Decimals to Fractions 1
    • Converting Repeating Decimals to Fractions 2
    • Converting to slope-intercept form
    • Converting Units of Length
    • Converting Within the Metric System
    • Convex Lens Examples
    • Convex Lenses
    • Convex Parabolic Mirrors
    • Coordinate Plane Word Problem
    • Coordinate Plane: Graphing Points
    • Coordinate Plane: Graphing Points and Naming Quadrants
    • Coordinate Plane: Graphing Points Word Problem
    • Coordinate Plane: Have All the Points Been Graphed?
    • Coordinate Plane: Reflecting Points
    • Coordinates of a Rectangle
    • Corporate Debt versus Traditional Mortgages
    • Corporations and Limited Liability
    • Correction to Calendar Notation
    • Correction to Force of Friction Keeping the Block Stationary
    • Correction to Sodium Potassium Pump video
    • Correction to Total Final Velocity for Projectile
    • Correlation and Causality
    • Cosmic Background Radiation
    • Cosmic Background Radiation 2
    • Cosmological Time Scale 1
    • Cosmological Time Scale 2
    • Cost Push Inflation
    • Count by Category
    • Counting American Coins
    • Counting by Tens
    • Counting Dogs, Mice and Cookies
    • Counting Dollars
    • Counting in Order
    • Counting in Pictures
    • Counting Outcomes Using a Chart
    • Counting Outcomes Using a Tree Diagram
    • Counting to Find Missing Numbers Between 100 and 120
    • Counting Whales, Sheep and Flowers
    • Counting with a Number Grid
    • Counting with Small Numbers
    • Covalent Networks, Metallic, and Ionic Crystals
    • CPI Index
    • Creating a Bar Chart
    • Creating a Fraction Through Division of Whole Numbers
    • Creating Picture and Bar Graphs
    • Creating Rectangles with a Given Area (Example 1)
    • Creating Rectangles with a Given Area (Example 2)
    • Creating the Largest Possible Number
    • Credit Default Swaps
    • Credit Default Swaps (CDS) Intro
    • Credit Default Swaps 2
    • Cross Elasticity of Demand
    • Cross Product 1
    • Cross Product 2
    • Cross Product and Torque
    • CSS PROFILE Walkthrough Part 1: Registration
    • CSS PROFILE Walkthrough Part 2: Parent Demographics
    • CSS PROFILE Walkthrough Part 3: Parent Financial Information
    • CSS PROFILE Walkthrough Part 4: Parent Assets and Expenses
    • CSS PROFILE Walkthrough Part 5: Student Demographics and Financial Information
    • CSS PROFILE Walkthrough Part 6: Family List, Special Circumstances and Supplemental Questions
    • Cuban Missile Crisis
    • Cupcake Economics 2
    • Cupcake Economics 3
    • Currency Effect on Trade
    • Currency Effect on Trade Review
    • Currency Exchange Introduction
    • Customer Success Manager: How I Got My Job and Where I’m Going
    • Customer Success Manager: My Budget and Planning for the Future
    • Customer Success Manager: My Educational Choices
    • Customer Success Manager: What I Do and How Much I Make
    • Cylinder Volume and Surface Area
    • Cytotoxic T Cells
    • Damascus Room
    • Damien Hirst’s Shark: Interpreting Contemporary Art
    • Dancer: How I Got My Job and Where I’m Going
    • Dancer: My Budget and Planning for the Future
    • Dancer: What I Do and How Much I Make
    • Data on Chinese US Balance of Payments
    • Data on Chinese Foreign Assets Increase in 2010
    • Data on Chinese M1 Increase in 2010
    • Debt Loops Rationale and Effects
    • Deciding When to Apply: Early vs. Regular Decision
    • Deciding Whether to Retake the ACT
    • Deciding Whether to Retake the SAT
    • Decimal Intuition with Grids
    • Decimal Place Value
    • Decimal Place Value 2
    • Decimals and Fractions
    • Decimals as Words
    • Decimals on a Number Line
    • Decimals: Choosing a Number to Represent Place Value
    • Decimals: Comparing Place Values
    • Decimals: Expanding Out Place Value
    • Decimals: Writing It Out as a Number
    • Decimals: Writing It Out in Words
    • Decomposing a Fraction Visually
    • Decomposing a Mixed Number
    • Decomposing Angles
    • Decomposing Hundredths on a Number Line
    • Decomposing Shapes to Find Area: Addition
    • Decomposing Shapes to Find Area: Grids
    • Decomposing Shapes to Find Area: Subtraction
    • Deductive Reasoning 1
    • Deductive Reasoning 2
    • Deductive Reasoning 3
    • Deficit and Debt Ceiling
    • Deflation
    • Deflation Despite Increases in Money Supply
    • Deflationary Spiral
    • Demand Curve as Marginal Benefit Curve
    • Demand-Pull Inflation under Johnson
    • Density Word Problem: Blimp
    • Dependent and Independent Variables: Expressing the Graph as an Equation
    • Dependent and Independent Variables: Graphing the Equation
    • Dependent and Independent Variables: The Basics
    • Dependent Probability Example 1
    • Dependent Probability Example 2
    • Depreciating the Truck
    • Depreciation
    • Depreciation in Cash Flow
    • Depriciation and Opportunity Cost of Capital
    • Deriving Demand Curve from Tweaking Marginal Utility per Dollar
    • Deriving Displacement as a Function of Time, Acceleration and Initial Velocity
    • Deriving Max Projectile Displacement Given Time
    • Descartes and Cartesian Coordinates
    • Describing and Meaning of Percent
    • Describing and Meaning of Percent 2
    • Describing Scatter Plots
    • Details on Shifting Aggregate Planned Expenditures
    • Detectable Civilizations in our Galaxy 1
    • Detectable Civilizations in our Galaxy 2
    • Detectable Civilizations in our Galaxy 3
    • Detectable Civilizations in our Galaxy 4
    • Detectable Civilizations in our Galaxy 5
    • Determinant and Area of a Paralleogram
    • Determine Sample Size for a Given Confidence Interval/Margin of Error
    • Determining Probability
    • Determining Rates with Fractions
    • Determining the equation of a trigonometric function
    • Development of Agriculture and Writing
    • Die Rolling Probability
    • Diego Velazquez, Las Meninas
    • Diego Velazquez, The Drunks (Los Borrachos)
    • Diego Velazquez, Vulcan’s Forge
    • Difference of Cubes Factoring
    • Difference of Functions
    • Difference of Logarithms with Same Base
    • Different Ways to Determine Time in Air
    • Different Ways to Represent 1 as a Fraction
    • Differentiability and Continuity
    • Diffusion and Osmosis
    • Digging Through Time
    • Dimensions of a Cube from Its Volume
    • Dimensions of Rectangle from Coordinates
    • Direct and Inverse Variation
    • Direct Inverse and Joint Variation
    • Direct Variation 1
    • Direct Variation Application
    • Director of Photography: How I Got My Job and Where I’m Going
    • Director of Photography: My Budget and Planning for the Future
    • Director of Photography: What I Do and How Much I Make
    • Director of Products: How I Got My Job and Where I’m Going
    • Director of Products: What I Do and How Much I Make
    • Discriminant for Types of Solutions for a Quadratic
    • Displacement from Time and Velocity Examples
    • Distance Conversions (Metric)
    • Distance Conversions (U.S. Customary)
    • Distributive Property 2, The
    • Distributive Property 3
    • Distributive Property, The
    • District Representative: How I Got My Job and Where I’m Going
    • District Representative: My Budget and Planning for the Future
    • District Representative: What I Do and How Much I Make
    • District Representative: Working in Public Service
    • Dividing a Decimal by a Power of 10
    • Dividing and Simplifying Rational Expressions
    • Dividing by a Two-Digit Number (Example 1)
    • Dividing by a Two-Digit Number (Example 2)
    • Dividing Completely to Get a Decimal Answer
    • Dividing Complex Numbers
    • Dividing Decimals
    • Dividing Decimals
    • Dividing Decimals 2.1
    • Dividing Decimals Completely
    • Dividing Fractions
    • Dividing Fractions
    • Dividing Fractions Example
    • Dividing Fractions Word Problem
    • Dividing Mixed Numbers
    • Dividing Mixed Numbers and Fractions
    • Dividing Monomials
    • Dividing Multivariable Polynomial With Monomial
    • Dividing Negative Fractions
    • Dividing Numbers: Introduction to Long Division
    • Dividing Numbers: Introduction to Remainders
    • Dividing Numbers: Long Division
    • Dividing Numbers: Long Division with a Remainder
    • Dividing Polynomials 1
    • Dividing Polynomials With Remainders
    • Dividing Real Numbers With Different Signs
    • Dividing Whole Numbers and Applications 1
    • Dividing Whole Numbers and Applications 2
    • Dividing Whole Numbers and Applications 3
    • Dividing Whole Numbers and Applications 4
    • Dividing Whole Numbers and Applications 5
    • Dividing Whole Numbers and Applications 6
    • Dividing Whole Numbers and Fractions Word Problem: Potpourri
    • Dividing Whole Numbers and Fractions Word Problem: Studying
    • Dividing Whole Numbers by 10
    • Division 1
    • Division 2
    • Division 3: More Long Division and Remainders Examples
    • Division Using Understanding of Place Value
    • Division Word Problem: Field Goals
    • DNA
    • Does a Vertical Line Represent a Function?
    • Doing the Example with Accounts Payable Growing
    • Domain and Range 1
    • Domain and Range 2
    • Domain and Range of Function Given a Formula
    • Domain and Range of a Relation
    • Domain of a function
    • Domain of a Radical Function
    • Domain of a Rational Expression 1
    • Donald Judd, Untitled
    • Donatello, David
    • Donatello, Mary Magdalene
    • Doppler Effect Formula for Observed Frequency
    • Doppler Effect Formula When Source is Moving Away
    • Dot vs. Cross Product
    • Drawing a Quadrilateral on the Coordinate Plane
    • Drawing a Trapezoid on the Coordinate Plane
    • Drawing Acute, Right and Obtuse Angles
    • Drawing Conclusions in a Hypothesis Test of a Sample Proportion
    • Drawing Line Segments
    • Early Train Word Problem
    • Earnings and EPS
    • Earth Formation
    • EBITDA
    • Economic Growth through Investment
    • Economic Profit vs. Accounting Profit
    • Economics of a Cupcake Factory
    • Ed Kienholz and Nancy Reddin Kienholz, Useful Art #5: The Western Hotel
    • Edgar Degas, At the Races in the Countryside
    • Edgar Degas, The Bellelli Family
    • Edgar Degas, The Dance Class
    • Edgar Degas, Visit to a Museum
    • Edgar Degas, Woman Bathing in a Shallow Tub
    • Edouard Manet, A Bar at the Folies-Bergere
    • Edouard Manet, Corner of a Cafe-Concert
    • Edouard Manet, Emile Zola
    • Edouard Manet, In the Conservatory
    • Edouard Manet, The Balcony
    • Edouard Manet, The Railway
    • Education Resource Specialist: How I Got My Job and Where I’m Going
    • Education Resource Specialist: My Budget and Planning for the Future
    • Education Resource Specialist: What I Do and How Much I Make
    • Education Resource Specialist: Work-Life Balance and Parental Leave
    • Edvard Munch, The Storm
    • Edward Hopper, Nighthawks
    • Efficiency of a Carnot Engine
    • Eigenvalues of a 3x3 Matrix
    • El Greco, Adoration of the Shepherds
    • Elasticity and Strange Percent Changes
    • Elasticity of Supply
    • Electoral College
    • Electric Potential Energy
    • Electric Potential Energy (Part 2 - involves Calculus)
    • Electron Configurations
    • Electron Configurations 2
    • Electron Transport Chain
    • Electrostatics (Part 1) Introduction to Charge and Coulumb’s Law
    • Electrostatics (Part 2)
    • Electrotonic and Action Potentials
    • Elements and Atoms
    • Elements of a Strong Recommendation Letter
    • Embryonic Stem Cells
    • Emergency Medical Technician (EMT): How I Got My Job and Where I’m Going
    • Emergency Medical Technician (EMT): My Budget and Planning for the Future
    • Emergency Medical Technician (EMT): What I Do and How Much I Make
    • Empirical and Molecular Formulas from Stoichiometry
    • Energy Inputs for Tilling a Hectare of Land
    • Engaging in Extracurricular Activities
    • Enterprise Value
    • Enthalpy
    • Entropy Intuition
    • Environmental Specialist: How I Got My Job and Where I’m Going
    • Environmental Specialist: My Budget and Planning for the Future
    • Environmental Specialist: What I Do and How Much I Make
    • Epidemic Intelligence Service Officer: How I Got My Job and Where I’m Going
    • Epidemic Intelligence Service Officer: What I Do and How Much I Make
    • Equal Parts of Circles and Rectangles
    • Equal Sign
    • Equalizing Marginal Utility per Dollar Spent
    • Equation fo a Line Hairier Example
    • Equation of a Line 1
    • Equation of a Line 2
    • Equation of a line 2
    • Equation of a Line 3
    • Equation Special Cases
    • Equations 2
    • Equations 3
    • Equations of Proportional Relationships
    • Equations of Sequence Patterns
    • Equestrian Sculpture of Marcus Aurelius
    • Equilateral and Isosceles Example Problems
    • Equilateral Triangle Sides and Angles Congruent
    • Equity vs. Debt
    • Equivalent Expressions with Distribution and Negative Numbers
    • Equivalent Expressions with Negative Numbers
    • Equivalent Fraction Models
    • Equivalent Fractions
    • Equivalent Fractions and Different Wholes
    • Equivalent Fractions Example
    • Equivalent Fractions Visually and on a Number Line
    • Equivalent Fractions with Visuals
    • Erechtheion, The
    • Ernst Ludwig Kirchner, Street, Dresden
    • Estate Tax Basics
    • Estate Tax Introduction
    • Estimating Lengths
    • Estimating P-Value from a Simulation
    • Estimating the Line of Best Fit
    • Estimation With Decimals
    • Euclid as the Father of Geometry
    • Eugene Delacroix, Liberty Leading the People
    • Eugene Delacroix, Scene of the Massacre at Chios
    • Eugene Delacroix, The Death of Sardanapalus
    • Euler Line
    • Euler’s Line Proof
    • Eva Hesse, Untitled (1966)
    • Eva Hesse, Untitled (1970)
    • Evaluate a Formula Using Substitution
    • Evaluate a Statistical Study
    • Evaluating a Polynomial at a Given Value
    • Evaluating an Algebraic Expression in a Word Problem
    • Evaluating an Expression With Multiple Variables
    • Evaluating Exponential Expressions
    • Evaluating Exponential Expressions 2
    • Evaluating Expressions With Two Variables
    • Evaluating Functions
    • Evaluating Functions Given Their Formula
    • Evaluating Functions Given Their Graph
    • Evaluating Numeric Expressions with Fractions
    • Evaluating Numerical Expressions with and Without Parentheses
    • Events and Outcomes 1
    • Events and Outcomes 2
    • Events and Outcomes 3
    • Exactly Three Heads in Five Flips
    • Example Calculating Real GDP with a Deflator
    • Example involving an isosceles triangle and parallel lines
    • Example of Finding Reactant Empirical Formula
    • Example of Solving for a Variable
    • Examples of Accounting for GDP
    • Exchange Traded Funds (ETFs)
    • Expected Value of Binomial Distribution
    • Expected Value: E(X)
    • Expensing a Truck Leads to Inconsistent Performance
    • Experimental Probability
    • Exploring linear relationships
    • Exploring Medial Triangles
    • Exploring nonlinear relationships
    • Exponent Properties 1
    • Exponent Properties 2
    • Exponent Properties 3
    • Exponent Properties 4
    • Exponent Properties 5
    • Exponent Properties 6
    • Exponent Properties 7
    • Exponent Rules 1
    • Exponent Rules 2
    • Exponent Rules 3
    • Exponential Application
    • Exponential form to find complex roots
    • Exponential Growth
    • Exponents and Powers of Zero Patterns
    • Exponents Rules Part 1
    • Exponents Rules Part 2
    • Exponents with Negative Bases
    • Extraneous Solutions for Radical Equations
    • Extraneous Solutions to Rational equations
    • Extreme Value Theorem
    • Facing the Standardized Tests
    • Factor Expressions by Grouping
    • Factoring a Linear Binomial by Taking a Common Factor
    • Factoring Algebraic Expressions Using the Distributive Property
    • Factoring and the Distributive Property
    • Factoring and the Distributive Property 2
    • Factoring and the Distributive Property 3
    • Factoring Difference of Squares
    • Factoring Perfect Square Trinomials
    • Factoring Special Products 1
    • Factoring Special Products 2
    • Factoring Special Products 3
    • Factoring Sum of Cubes
    • Factoring Trinomials by Grouping 1
    • Factoring Trinomials by Grouping 2
    • Factoring Trinomials by Grouping 3
    • Factoring Trinomials by Grouping 4
    • Factoring Trinomials by Grouping 5
    • Factoring Trinomials by Grouping 6
    • Factoring Trinomials With a Common Factor
    • Factoring Trinomials With a Leading 1 Coefficient
    • Factoring Trinomials With a Non-1 Leading Coefficient by Grouping
    • Factors Affecting Supply
    • FAFSA Walkthrough Part 1: Account Setup
    • FAFSA Walkthrough Part 2: Student Demographics
    • FAFSA Walkthrough Part 3: School Selection
    • FAFSA Walkthrough Part 4: Dependency Status
    • FAFSA Walkthrough Part 5: Parent Demographics
    • FAFSA Walkthrough Part 6: Parent Financial Information
    • FAFSA Walkthrough Part 7: Student Financial Information
    • FAFSA Walkthrough Part 8: Sign and Submit
    • Fair Value Accounting
    • Fed Open Market Operations
    • Federal Reserve Balance Sheet
    • Ferris Wheel Trig Problem
    • Ferris Wheel Trig Problem (part 2)
    • FICA Tax
    • Figuring out all the angles for congruent triangles example
    • Filippo Brunelleschi, Dome of the Cathedral of Florence
    • Filling Rectangles with Squares
    • Film Director: How I Got My Job and Where I’m Going
    • Film Director: My Budget and Planning for the Future
    • Film Director: What I Do and How Much I Make
    • Financial Aid Package Comparison (Part 3)
    • Financial Aid Package Components (Part 1)
    • Financial Aid Package Example (Part 2)
    • Financial Crisis in Thailand Caused by Speculative Attack
    • Financial Weapons of Mass Destruction
    • Find an Unknown in a Proportion
    • Find an Unknown in a Proportion 2
    • Find Measure of Complementary Angles
    • Find Measure of Supplementary Angles
    • Find the Measure of Vertical Angles
    • Find the Volume of a Ring
    • Find the Volume of Rectangular Crates Inside Rectangular Crates
    • Finding a Missing Side when Given Perimeter
    • Finding a Missing Side when Given the Area
    • Finding a Percentage
    • Finding Area by Breaking Up the Shape
    • Finding Area by Rearranging Parts
    • Finding Area Using Similarity and Congruence
    • Finding Common Denominators
    • Finding Congruent Triangles
    • Finding Cube Roots
    • Finding Factors and Multiples
    • Finding Factors of a Number
    • Finding Intercepts from a Table
    • Finding Missing Angles
    • Finding more angles
    • Finding Patterns in Numbers
    • Finding Surface Area of a Triangular Prism Using a Net
    • Finding the 100th Term in a Sequence
    • Finding the Coordinates of the Missing Vertex
    • Finding the Equation of a Line in Slope-Intercept Form from a Table
    • Finding the Perimeter when a Side Length Is Missing
    • Finding the Reasonable Unit of Measurement
    • Finding the Right Scatter Plot to Describe Data
    • Finding the X-Intercept of a Line
    • Finding Unit Prices
    • Finding Unit Rates
    • Firefighter: How I Got My Job and Where I’m Going
    • Firefighter: My Budget and Planning for the Future
    • Firefighter: What I Do and How Much I Make
    • Firestick Farming
    • First Degree Price Discrimination
    • First Law of Thermodynamics/ Internal Energy
    • First Lieutenant, U.S. Army: How I Got My Job and Where I’m Going
    • First Lieutenant, U.S. Army: My Budget and Planning for the Future
    • First Lieutenant, U.S. Army: What I Do and How Much I Make
    • First Living Things on Land Clarification
    • Fixed, Variable and Marginal Cost
    • Floating Exchange Effect on China
    • Floating Exchange Effect on US
    • Floating Exchange Resolving Trade Imbalance
    • Fluids (Part 1)
    • Fluids (Part 10)
    • Fluids (Part 11)
    • Fluids (Part 12)
    • Fluids (Part 2)
    • Fluids (Part 3)
    • Fluids (Part 4)
    • Fluids (Part 5)
    • Fluids (Part 6)
    • Fluids (Part 7)
    • Fluids (Part 8)
    • Fluids (Part 9)
    • Foci of a Hyperbola
    • Foci of an Ellipse
    • Focus and Directrix of a Parabola 2
    • Food Entrepreneur: How I Got My Job and Where I’m Going
    • Food Entrepreneur: What I Do and How Much I Make
    • Food Truck Manager & Chef: How I Got My Job and Where I’m Going
    • Food Truck Manager & Chef: My Budget and Planning for the Future
    • Food Truck Manager & Chef: What I Do and How Much I Make
    • Force of Friction Keeping the Block Stationary
    • Force of Friction Keeping Velocity Constant
    • Formula From Mass Composition
    • Forward Contract Introduction
    • Four Fundamental Forces
    • Fra Angelico, The Annunciation
    • Fra Filippo Lippi, Madonna and Child with Two Angels
    • Fraction Basics
    • Fraction Word Problem: Lizard Length
    • Fraction Word Problem: Piano Practice
    • Fraction Word Problem: Pieces of Pizza
    • Fraction Word Problem: Spider Eyes
    • Fraction Word Problems 1 (ex 1)
    • Fraction Word Problems 1 (ex 2)
    • Fraction Word Problems 1 (ex 3)
    • Fraction Word Problems 1 (ex 4)
    • Fraction-Decimal Intuition Problems
    • Fractional Exponent Expressions 1
    • Fractional Exponent Expressions 2
    • Fractional Exponent Expressions 3
    • Fractional Reserve Banking Commentary 1
    • Fractions as Division by Power of 10
    • Fractions in Lowest Terms
    • Fractions on a Number Line (Example 1)
    • Fractions on a Number Line (Example 2)
    • Fractions on the Number Line 1 (ex 1)
    • Fractions on the Number Line 1 (ex 2)
    • Fractions on the Number Line 2 (ex 1)
    • Fractions on the Number Line 3 (ex 1)
    • Fractions on the Number Line 3 (ex 2)
    • Fractions: More than One Equal Section
    • Francisco Goya, The Family of Charles IV
    • Francois Boucher, Madame de Pompadour
    • Frank Lloyd Wright, Solomon R. Guggenheim Museum, New York City
    • FRB Commentary 2: Deposit Insurance
    • FRB Commentary 3: Big Picture
    • Freelance Journalist & Podcaster: How I Got My Job and Where I’m Going
    • Freelance Journalist & Podcaster: My Budget and Planning for the Future
    • Freelance Journalist & Podcaster: Salary Negotiation
    • Freelance Journalist & Podcaster: What I Do and How Much I Make
    • French Invasion of Russia
    • French Revolution (Part 1)
    • French Revolution (Part 2)
    • French Revolution (Part 3)- Reign of Terror
    • French Revolution (Part 4)- The Rise of Napoleon Bonaparte
    • Frequency Probability and Unfair Coins
    • Frequency Stability
    • Frequency Tables and Dot Plots
    • Frida Kahlo, Frieda and Diego Rivera
    • Full Reserve Banking
    • Fun Trig Problem
    • Function Inverse Example 1
    • Function Inverses Example 2
    • Function Inverses Example 3
    • Function Notation in Context
    • Functional Relationships 1
    • Functions (part 4)
    • Functions (Part III)
    • Functions Part 2
    • Fundamental Theorem of Algebra
    • Futures and Forward Curves
    • Futures Curves II
    • Futures Fair Value in the Pre-Market
    • Futures Introduction
    • Futures Margin Mechanics
    • Futurism
    • Galactic Collisions
    • Galvanic Cells
    • Game Theory of Cheating Firms
    • GCF to Factor a Polynomial
    • GDP Deflator
    • Geithner 5: A Better Solution
    • Geithner Plan 2.5
    • Geithner Plan I
    • Geithner Plan II
    • Geithner Plan III
    • Geithner Plan IV
    • Generalized Linear Consumption Function
    • Generalizing with Binomial Coefficients (bit advanced)
    • Generating Equivalent Fractions
    • Geometric series sum to figure out mortgage payments
    • George Bellows, Pennsylvania Station
    • George Herbert Mead: The I and the Me
    • Georges Braque, The Viaduct at L’Estaque
    • Georges Seurat, A Sunday Afternoon on La Grande Jatte
    • Georges Seurat, Bathers at Asnieres
    • Georgia O’Keeffe, The Lawrence Tree
    • Gerhard Richter, Betty
    • Getting a Seed Round from a VC
    • Getting At Least One Heads
    • Getting Exactly Two Heads (Combinatorics)
    • Getting to 10 by Filling Boxes
    • Gibbs Free Energy and Spontaneity
    • Gibbs Free Energy Example
    • Giorgione, The Tempest
    • Giotto, Scrovegni Chapel, Padua, (Part 1)
    • Giotto, Scrovegni Chapel, Padua, (Part 2)
    • Giotto, Scrovegni Chapel, Padua, (Part 3)
    • Giotto, Scrovegni Chapel, Padua, (Part 4)
    • Giovanni Bellini & Titian, Feast of the Gods
    • Giovanni Bernini, Bust of Medusa
    • Giovanni Bernini, David
    • Giovanni Bernini, Ecstasy of St. Teresa
    • Giovanni Bernini, Sant’Andrea al Quirinale
    • Glucose Concentration Conversion
    • Glucose, Insulin and Diabetes
    • Glycolysis
    • Going Back to the Till: Series B
    • Golden Stool (Sika Dwa Kofi)
    • Government Spending and the IS-LM Model
    • Government’s Financial Condition
    • Grant Wood, American Gothic
    • Graph of the sine function
    • Graphical Relations and Functions
    • Graphical Slope of a Line
    • Graphical System of Inequalities
    • Graphical Systems Application Problem
    • Graphing a Basic Function
    • Graphing a line in slope intercept form
    • Graphing a Quadratic Function
    • Graphing Exponential Functions
    • Graphing Hundredths on a Number Line
    • Graphing Inequalities 1
    • Graphing Inequalities 2
    • Graphing linear inequalities in two variables 2
    • Graphing linear inequalities in two variables 3
    • Graphing Linear Inequalities in Two Variables Example 2
    • Graphing Logarithmic Functions
    • Graphing Natural Logarithm Function
    • Graphing Proportional Relationships (Example 1)
    • Graphing Proportional Relationships (Example 2)
    • Graphing Proportional Relationships (Example 3)
    • Graphing Radical Functions
    • Graphing Systems of Equations
    • Graphing Systems of Inequalities
    • Graphing systems of inequalities
    • Graphing systems of inequalities 2
    • Graphing systems of inequalities 3
    • Graphing trig functions
    • Graphing Using X and Y Intercepts
    • Graphs of trig functions
    • Gravitation (Part 2)
    • Gravity for Astronauts in Orbit
    • Greater Than and Less Than Symbols
    • Greatest Common Divisor
    • Greatest Common Factor
    • Greek Debt Recession and Austerity (Part 1)
    • Greek Financial Crisis (Part 2)
    • Gross and Net Income: Anatomy of a Paycheck
    • Groups of the Periodic Table
    • Growing by a percentage
    • Gustav Klimt, Beethoven Frieze
    • Gustav Klimt, Death and Life
    • Gustav Klimt, The Kiss
    • Hagia Sophia as a Mosque
    • Hagia Sophia, Istanbul
    • Hairier Slope of Line
    • Haitian Revolution (Part 1)
    • Haitian Revolution (Part 2)
    • Half-Life
    • Halves and Fourths of Shapes
    • Hannah Hoch, Cut with the Kitchen Knife
    • Hans Holbein the Younger, Portrait of Henry VIII
    • Hans Holbein the Younger, The Ambassadors
    • Hardy-Weinberg Principle
    • Harmonic Motion Part 2 (Calculus)
    • Harmonic Motion Part 3 (No Calculus)
    • Hawaiian Islands Formation
    • Head of Augustus
    • Health Care Community Liaison: How I Got My Job and Where I’m Going
    • Health Care Community Liaison: My Budget and Planning for the Future
    • Health Care Community Liaison: What I Do and How Much I Make
    • Health Care Costs in US vs Europe
    • Healthcare System Overview
    • Heart Disease and Heart Attacks
    • Heat of Formation
    • Hector Guimard, City Entrance, Paris Metropolitain
    • Hedge Fund Intro
    • Hedge Fund Strategies - Long Short 1
    • Hedge Fund Strategies - Long Short 2
    • Hedge Fund Strategies - Merger Arbitrage 1
    • Hedge Fund Structure and Fees
    • Hedge Funds, Venture Capital, and Private Equity
    • Helper T Cells
    • Hemoglobin
    • Henri Cartier-Bresson, Behind the Gare Saint-Lazare, Paris
    • Henri de Toulouse-Lautrec, At the Moulin Rouge
    • Henri Matisse, Luxe, Calme et Volupte
    • Henri Matisse, The Piano Lesson
    • Henri Matisse, The Red Studio
    • Heron’s Formula
    • Hess’s Law and Reaction Enthalpy Change
    • Hess’s Law Example
    • Heterogeneous Equilibrium
    • Highly Selective vs. Selective vs. Nonselective Colleges
    • Home Equity Loans
    • House Altar Depicting Akhenaten, Nefertiti and Three Daughters
    • Housing Price Conundrum (Part 2)
    • Housing Price Conundrum (Part 3)
    • Housing Conundrum (Part 4)
    • How and Why Greece Would Leave the Euro (Part 3)
    • How Earth’s Tilt Causes Seasons
    • How Many People to Hire Given the MPR Curve
    • How One-Point Linear Perspective Works
    • How to Approximate Square Roots
    • How to Calculate Interquartile Range (IQR)
    • How to Classify Numbers
    • How to Create a Histogram
    • How to Describe Real-World Situations with Inequalities
    • How to Evaluate Expressions with Two Variables (Example 1)
    • How to Evaluate Expressions with Two Variables (Example 2)
    • How to Find a Missing Value Given the Mean
    • How to Find Equivalent Expressions by Combining Like Terms and Using the Distributive Property
    • How to Find Mistakes in One-Step Equations
    • How to Find the Area of a Strange Quadrilateral on a Grid
    • How to Find the Area of a Triangle on a Grid
    • How to Interpret a Histogram
    • How to Make a Scale Drawing
    • How to Measure Volume
    • How to Plot Inequalities on a Number Line
    • How to Read a Line Plot that Uses Fractions
    • How to Solve One-Step Equations with Fractions and Decimals
    • How to Solve One-Step Multiplication and Division Equations with Fractions and Decimals
    • How to Solve Two-Step Linear Equations with Decimals and Fractions
    • How to Test Solutions to Equations Using Substitution
    • How to Test Solutions to Inequalities
    • How to Use the Distributive Property to Factor Out the Greatest Common Factor
    • How to Use the Distributive Property with Variables
    • How to Visually Identify Proportional Relationships Using Graphs
    • How to Write Basic Expressions with Variables
    • How to Write One-Step Equations for Word Problems
    • How We Know About the Earth’s Core
    • HTML/JS: Making Webpages Interactive with jQuery: DOM Access with jQuery
    • HTML/JS: Making Webpages Interactive with jQuery: DOM Animation & Effects with jQuery
    • HTML/JS: Making Webpages Interactive with jQuery: DOM Events with jQuery
    • HTML/JS: Making Webpages Interactive with jQuery: DOM Modification with jQuery
    • HTML/JS: Making Webpages Interactive with jQuery: Form Processing with jQuery
    • HTML/JS: Making Webpages Interactive with jQuery: Further Learning
    • HTML/JS: Making Webpages Interactive with jQuery: jQuery Techniques
    • HTML/JS: Making Webpages Interactive with jQuery: Welcome to jQuery
    • HTML/JS: Making Webpages Interactive: DOM Access Methods
    • HTML/JS: Making Webpages Interactive: DOM Animation
    • HTML/JS: Making Webpages Interactive: DOM Events
    • HTML/JS: Making Webpages Interactive: DOM Modification
    • HTML/JS: Making Webpages Interactive: Further Learning
    • HTML/JS: Making Webpages Interactive: Get Ready to Make Your Webpages Interactive
    • HTML/JS: Making Webpages Interactive: JS and the DOM
    • HTML/JS: Making Webpages Interactive: Using JS Libraries in your Webpage
    • Hubble Image of Galaxies
    • Hubble’s Law
    • Human Capital
    • Human Evolution Overview
    • Human Resources Management & Program Analyst: How I Got My Job and Where I’m Going
    • Human Resources Management & Program Analyst: How I Paid for College
    • Human Resources Management & Program Analyst: What I Do and How Much I Make
    • Hundred Days and Waterloo
    • Hydrogen Peroxide Correction
    • Hyperinflation
    • Hyperplasia in Colon Tissue
    • Hypothesis Test Comparing Population Proportions
    • Hypothesis Test for the Difference of Two Means
    • Hypothesis Testing for a Mean
    • i as the Principal Root of -1 (a little technical)
    • Ice Accelerating Down an Incline
    • Idea Behind Hypothesis Testing
    • Idea of Division, The
    • Ideal Gas Equation: Example 1
    • Ideal Gas Equation: Example 2
    • Ideal Gas Equation: Example 3
    • Ideal Gas Equation: PV=nRT
    • Ideal Gas Example 4
    • Identify the Angle
    • Identifying a Proportional Relationship from a Table
    • Identifying Complementary and Supplementary Angles
    • Identifying Conics 1
    • Identifying Conics 2
    • Identifying Fraction Parts
    • Identifying Geometric Solids
    • Identifying Hundredths on a Number Line
    • Identifying Parallel and Perpendicular Lines
    • Identifying Percent Amount and Base
    • Identifying Rational Numbers
    • Identifying Rays
    • Identifying Symmetrical Figures
    • Identifying Tenths on a Number Line
    • Identifying Type I and Type II Errors in Hypothesis Testing
    • Identifying Unit Fractions Word Problem
    • Identity Property of 0
    • Identity Property of 1
    • Identity Property of 1 (Second Example)
    • IIT JEE Trigonometric Constraints
    • IIT JEE Trigonometric Maximum
    • IIT JEE Trigonometry Problem 1
    • Images and Power: Francisco Goya’s Third of May, 1808
    • Imaginary Roots of Negative Numbers
    • Impact of a Radius Change on the Area of a Circle
    • Impact on Median and Mean when Increasing Highest Value
    • Impact on Median and Mean when Removing Lowest Value
    • Impact Veolocity From Given Height
    • Incenter and incircles of a triangle
    • Inclined Plane Force Components
    • Income and Expenditure Views of GDP
    • Increasing Opportunity Cost
    • Independent and Dependent Systems
    • Independent Events 1
    • Independent Events 2
    • Independent Events 3
    • Inductive Patterns
    • Inductive Reasoning 1
    • Inductive Reasoning 2
    • Inductive Reasoning 3
    • Inequalities
    • Inequalities on a Number Line
    • Inferior Goods Clarification
    • Inferring Population Mean from Sample Mean
    • Inflammation
    • Inflammatory Response
    • Inflation & Deflation3: Obama Stimulus Plan
    • Inflation Data
    • Inflation Overview
    • Inflation, Deflation & Capacity Utilization
    • Inflation, Deflation & Capacity Utilization 2
    • Information Security and Forensics Analyst: How I Got My Job
    • Information Security and Forensics Analyst: What I Do
    • Inradius Perimeter and Area
    • Inscribed and Central Angles
    • Institutional Critique: Hans Haacke’s Seurat’s Les Poseuses (Small Version), 1884-1975
    • Institutional Roles in Issuing and Processing Credit Cards
    • Instructional Designer: My Budget and Planning for the Future
    • Instructional Designer: What I Do and How Much I Make
    • Integer Equations to Describe a Diagram
    • Integer sums
    • Interactive Module: Finding Factors
    • Interest (Part 2)
    • Interest as Rent for Money
    • Interest Rate Swap 1
    • Interest Rate Swap 2
    • Interesting Perimeter and Area Problems
    • Interesting Polynomial Coefficient Problem
    • Intergalactic Scale
    • Internet 101: Cybersecurity and Crime
    • Internet 101: Encryption and Public Keys
    • Internet 101: How the Internet Works
    • Internet 101: HTTP and HTML
    • Internet 101: IP Addresses and DNS
    • Internet 101: Packet, Routers and Reliability
    • Internet 101: Wires, Cables and WiFi
    • Interpreting a Linear Graph Word Problem
    • Interpreting a Linear Table Word Problem
    • Interpreting a Scale Drawing
    • Interpreting a Trend Line
    • Interpreting Absolute Value as Distance
    • Interpreting Absolute Value in Real World Problems
    • Interpreting Bar Graphs: Alligators
    • Interpreting Bar Graphs: Colors
    • Interpreting Box Plots
    • Interpreting Futures Fair Value in the Premarket
    • Interpreting Graphs of Proportional Relationships
    • Interpreting Inequalities
    • Interpreting Integer Expressions on a Number Line
    • Interpreting Linear Expressions (Example 1)
    • Interpreting Linear Expressions (Example 2)
    • Interpreting Linear Graphs
    • Interpreting Multiplication and Division of Negative Numbers
    • Interpreting Negative Number Statements
    • Interpreting Picture Graphs: Notebook
    • Interpreting Picture Graphs: Paint
    • Interpreting the Graph of a Function
    • Interpreting Two-Way Relative Frequency Tables
    • Intro to 30-60-90 Triangles
    • Intro to Springs and Hooke’s Law
    • Intro to the Endocrine System
    • Introduction to Addition
    • Introduction to Addition Using Groups of 10
    • Introduction to angles (old)
    • Introduction to Area and Unit Squares
    • Introduction to Balance Sheets
    • Introduction to Bonds
    • Introduction to Cellular Respiration
    • Introduction to Chi-Square Distribution
    • Introduction to Comparing Fractions with Different Denominators
    • Introduction to Compound Interest
    • Introduction to Compound Interest and e
    • Introduction to Conic Sections
    • Introduction to Cube Roots
    • Introduction to Decimals
    • Introduction to Eigenvalues and Eigenvectors
    • Introduction to Equivalent Fractions
    • Introduction to Even and Odd Numbers
    • Introduction to Evolution and Natural Selection
    • Introduction to Exponential Decay
    • Introduction to Exponents
    • Introduction to Function Inverses
    • Introduction to functions
    • Introduction to Gravity
    • Introduction to Harmonic Motion
    • Introduction to Heredity
    • Introduction to HTML/CSS: Making Webpages: CSS Layout
    • Introduction to HTML/CSS: Making Webpages: CSS Text Properties
    • Introduction to HTML/CSS: Making Webpages: Further Learning
    • Introduction to HTML/CSS: Making Webpages: Introduction to CSS
    • Introduction to HTML/CSS: Making Webpages: Introduction to HTML
    • Introduction to HTML/CSS: Making Webpages: More CSS Selectors
    • Introduction to HTML/CSS: Making Webpages: More HTML Tags
    • Introduction to HTML/CSS: Making Webpages: Other Ways to Embed CSS
    • Introduction to HTML/CSS: Making Webpages: Web Development Tools
    • Introduction to i and Imaginary Numbers
    • Introduction to Inflation
    • Introduction to Interest
    • Introduction to JS: Drawing & Animation: Animation Basics
    • Introduction to JS: Drawing & Animation: Arrays
    • Introduction to JS: Drawing & Animation: Becoming a Better Programmer
    • Introduction to JS: Drawing & Animation: Coloring
    • Introduction to JS: Drawing & Animation: Debugging Programs
    • Introduction to JS: Drawing & Animation: Drawing Basics
    • Introduction to JS: Drawing & Animation: Functions
    • Introduction to JS: Drawing & Animation: Interactive Programs
    • Introduction to JS: Drawing & Animation: Introduction to Programming
    • Introduction to JS: Drawing & Animation: Logic and If Statements
    • Introduction to JS: Drawing & Animation: Looping
    • Introduction to JS: Drawing & Animation: Object-Oriented Design
    • Introduction to JS: Drawing & Animation: Objects
    • Introduction to JS: Drawing & Animation: Resizing with Variables
    • Introduction to JS: Drawing & Animation: Texts and Strings
    • Introduction to JS: Drawing & Animation: Variables
    • Introduction to JS: Drawing & Animation: Writing Clean Code
    • Introduction to Kinetics
    • Introduction to Light
    • Introduction to Limits
    • Introduction to Limits (HD)
    • Introduction to Line Plots
    • Introduction to Logarithm Properties
    • Introduction to Logarithm Properties (Part 2)
    • Introduction to Logarithms
    • Introduction to Magnetism
    • Introduction to Mechanical Advantage
    • Introduction to Medieval Scripts, An
    • Introduction to Momentum
    • Introduction to Mortgage Loans
    • Introduction to Multiplication
    • Introduction to Multiplying Decimals
    • Introduction to Negative Exponents (Part 1)
    • Introduction to Negative Exponents (Part 2)
    • Introduction to Newton’s Law of Gravitation
    • Introduction to Order of Operations
    • Introduction to Oxidation States
    • Introduction to Perimeter
    • Introduction to pH, pOH, and pKw
    • Introduction to Place Value
    • Introduction to Present Value
    • Introduction to Proportional Relationships
    • Introduction to Random Variables
    • Introduction to Rates
    • Introduction to Rational and Irrational Numbers
    • Introduction to Ratios
    • Introduction to Ratios (Apples and Oranges)
    • Introduction to Ratios (New HD Version)
    • Introduction to Sampling Distributions
    • Introduction to SQL: Querying and Managing Data: Further Learning in SQL
    • Introduction to SQL: Querying and Managing Data: Modifying Databases with SQL
    • Introduction to SQL: Querying and Managing Data: More Advanced SQL Queries
    • Introduction to SQL: Querying and Managing Data: Relational Queries in SQL
    • Introduction to SQL: Querying and Managing Data: SQL Basics
    • Introduction to Square Roots
    • Introduction to Subtraction
    • Introduction to Tension
    • Introduction to the Atom
    • Introduction to the Doppler Effect
    • Introduction to the Income Statement
    • Introduction to the Price-to-Earnings Ratio
    • Introduction to the Protestant Reformation, Part 1: Setting the Stage
    • Introduction to the Protestant Reformation, Part 2: Martin Luther
    • Introduction to the Protestant Reformation, Part 3: Varieties of Protestantism
    • Introduction to the Protestant Reformation, Part 4: The Counter-Reformation
    • Introduction to the quadratic equation
    • Introduction to the Yield Curve
    • Introduction to Torque
    • Introduction to Transformations on the Coordinate Plane
    • Introduction to Types of Quadrilaterals
    • Introduction to Vectors and Scalars
    • Introduction to Waves
    • Introduction to Work and Energy
    • Intuition on Static and Kinetic Friction Comparisons
    • Inverse Property of Addition
    • Inverse Property of Multiplication
    • Inverse Trig Functions: Arccos
    • Inverse Trig Functions: Arcsin
    • Inverse Trig Functions: Arctan
    • Inverse Variation Application
    • Investment and Consumption
    • Investment and Real Interest Rates
    • Investment vs. Consumption 1
    • Investment vs. Consumption 2
    • Ionic, Covalent, and Metallic Bonds
    • Is Limited Liability or Double Taxation Fair
    • Is Short Selling Bad?
    • Jackie Winsor, #1 Rope
    • Jackson Pollock, One: Number 31, 1950
    • Jacob Lawrence, The Migration Series
    • Jacopo Tintoretto, The Last Supper
    • Jacques-Louis David, The Death of Marat
    • Jacques-Louis David, The Emperor Napoleon in His Study at the Tuileries
    • Jacques-Louis David, The Lictors Returning to Brutus the Bodies of His Sons
    • Jacques-Louis David, The Oath of the Horatii
    • Jan van Eyck, Ghent Altarpiece
    • Jan van Eyck, Portrait of Giovanni Arnolfini and His Wife
    • Jan van Eyck, The Madonna in the Church
    • Jasper Johns, Flag
    • Jean (Hans) Arp, Untitled
    • Jean Courbet, A Burial at Ornans
    • Jean Courbet, The Artist’s Studio
    • Jean-Francois Millet, The Gleaners
    • Jean-Honore Fragonard, The Progress of Love: The Meeting
    • Jean-Honore Fragonard, The Swing
    • Johannes Vermeer, Girl with a Pearl Earring
    • Johannes Vermeer, The Art of Painting
    • Johannes Vermeer, Young Woman with a Water Pitcher
    • John Baldessari, I Will Not Make Any More Boring Art
    • John Constable, The Hay Wain
    • John Everett Millais, Christ in the House of His Parents
    • John Everett Millais, Ophelia
    • John Singer Sargent, Carnation, Lily, Lily, Rose
    • John Singleton Copley, A Boy with a Flying Squirrel (Henry Pelham)
    • Joint Variation Application
    • Jose Maria Velasco, The Valley of Mexico from the Santa Isabel Mountain Range
    • Joseph Turner, Rain, Steam and Speed: The Great Western Railway
    • Joseph Turner, Slave Ship (Slavers Throwing Overboard the Dead and Dying, Typhoon Coming On)
    • Joshua Reynolds, Lady Cockburn and Her Three Eldest Sons
    • Journey into Cryptography: Algorithmic Efficiency
    • Journey into Cryptography: Ancient Cryptography
    • Journey into Cryptography: Ciphers
    • Journey into Cryptography: Cryptography Challenge 101
    • Journey into Cryptography: Diffie-Hellman Key Exchange
    • Journey into Cryptography: Euler’s Totient Function
    • Journey into Cryptography: Fermat Primality Test
    • Journey into Cryptography: Fermat’s Little Theorem
    • Journey into Cryptography: Frequency Stability Property Short Film
    • Journey into Cryptography: Introduction to Randomized Algorithms
    • Journey into Cryptography: Modern Cryptography
    • Journey into Cryptography: Modular Arithmetic
    • Journey into Cryptography: Perfect Secrecy
    • Journey into Cryptography: Polyalphabetic Cipher
    • Journey into Cryptography: Primality Test
    • Journey into Cryptography: Primality Test Challenge
    • Journey into Cryptography: Primality Test with Sieve
    • Journey into Cryptography: Pseudorandom Number Generators
    • Journey into Cryptography: Public Key Cryptography: What Is It?
    • Journey into Cryptography: Random Primality Test (Warm-Up)
    • Journey into Cryptography: Randomized Algorithms
    • Journey into Cryptography: RSA Encryption: Step 1
    • Journey into Cryptography: RSA Encryption: Step 2
    • Journey into Cryptography: RSA Encryption: Step 3
    • Journey into Cryptography: RSA Encryption: Step 4
    • Journey into Cryptography: Sieve of Eratosthenes
    • Journey into Cryptography: Summary (What’s Next?)
    • Journey into Cryptography: The Caesar Cipher
    • Journey into Cryptography: The Discrete Logarithm Problem
    • Journey into Cryptography: The Enigma Encryption Machine
    • Journey into Cryptography: The Fundamental Theorem of Arithmetic
    • Journey into Cryptography: The One-Time Pad
    • Journey into Cryptography: The Prime Number Theorem
    • Journey into Cryptography: Time Space Tradeoff
    • Journey into Cryptography: What Is Computer Memory?
    • Journey into Cryptography: What Is Cryptography?
    • Journey into Information Theory: A Mathematical Theory of Communication
    • Journey into Information Theory: Ancient Information Theory
    • Journey into Information Theory: Compression Nodes
    • Journey into Information Theory: Electrostatic Telegraphs (Case Study)
    • Journey into Information Theory: Error Correction
    • Journey into Information Theory: History of the Alphabet
    • Journey into Information Theory: Information Entropy
    • Journey into Information Theory: Introduction to Channel Capacity
    • Journey into Information Theory: Measuring Information
    • Journey into Information Theory: Modern Information Theory
    • Journey into Information Theory: Morse Code and the Information Age
    • Journey into Information Theory: Origin of Markov Chains
    • Journey into Information Theory: Origins of Written Language
    • Journey into Information Theory: Source Encoding
    • Journey into Information Theory: Symbol Rate
    • Journey into Information Theory: The Battery and Electromagnetism
    • Journey into Information Theory: The Search for Extraterrestrial Intelligence
    • Journey into Information Theory: Visual Telegraphs (Case Study)
    • Journey into Information Theory: What Is Information Theory?
    • Judgement in the Presence of Osiris, Book of the Dead
    • Judicial Staff Attorney: How I Got My Job and Where I’m Going
    • Judicial Staff Attorney: My Budget and Planning for the Future
    • Judicial Staff Attorney: What I Do and How Much I Make
    • Judith Leyster, Self-Portrait
    • Justification for |a - b| = |b - a|
    • K-Ar Dating Calculation
    • Kayapo Headdress
    • Keq Derivation Intuition
    • Keq Intuition
    • Keynesian Cross
    • Keynesian Cross and the Multiplier
    • Keynesian Economics
    • Koch Snowflake Fractal
    • Korean War Overview
    • Krebs / Citric Acid Cycle
    • Kunz Axe
    • Kurt Schwitters, Merzbild 32A, The Cherry Picture
    • Lab Technician: How I Got My Job and Where I’m Going
    • Lab Technician: My Budget and Planning for the Future
    • Lab Technician: What I Do and How Much I Make
    • Land Productivity Limiting Human Population
    • Language and Notation of Basic Geometry
    • Language and Notation of the Circle
    • Language of Representation, The: Pablo Picasso’s Guitar
    • Laszlo Moholy-Nagy, Climbing the Mast
    • Laszlo Moholy-Nagy, Composition A.XX
    • Lattice Multiplication
    • Launching and Landing on Different Elevations
    • Law Code Stele of King Hammurabi
    • Law of cosines
    • Law of Demand
    • Law of Large Numbers
    • Law of Supply
    • Le Chatelier’s Principle
    • Least Common Multiple (Example 1)
    • Least Common Multiple (Example 2)
    • Least Common Multiple (LCM)
    • Least Common Multiple and Greatest Common Factor Word Problems
    • LeBron Asks About Comparing Earth’s History to a Basketball Game
    • LeBron asks about free throws versus three pointers
    • LeBron Asks About Newton’s 3rd Law
    • LeBron asks about the chances of making 10 free throws
    • LeBron Asks: What Muscles Do We Use When Shooting a Basket?
    • LeBron Asks: Why Does Humidity Make it Feel Hotter?
    • LeBron Asks: Why Does Sweating Cool You Down?
    • Length of a Line Segment Using Linear Equations
    • Length Word Problems
    • Leonardo da Vinci’s Letter to the Duke of Milan
    • Leonardo da Vinci, Adoration of the Magi
    • Leonardo da Vinci, The Last Supper
    • Leonardo da Vinci, The Virgin of the Rocks
    • Level 1 Exponents
    • Level 1 multiplying expressions
    • Level 2 Addition
    • Level 2 Exponents
    • Level 3 Exponents
    • Level 4 Division
    • Level 4 Subtraction
    • LIBOR
    • Licensed Clinical Social Worker: How I Got My Job and Where I’m Going
    • Licensed Clinical Social Worker: My Budget and Planning for the Future
    • Licensed Clinical Social Worker: What I Do and How Much I Make
    • Life Cycle of Massive Stars
    • Limit Examples (part 1)
    • Limit Examples (part 2)
    • Limit Examples (part3)
    • Limit Examples w/ brain malfunction on first prob (part 4)
    • Limiting Reactant Example Problem 1
    • Linear and Nonlinear Functions (Example 1)
    • Linear and Nonlinear Functions (Example 2)
    • Linear and Nonlinear Functions (Example 3)
    • Linear Equation Word Problem: Computer Store
    • Linear Equation Word Problem: Orange Trees
    • Linear Perspective: Filippo Brunelleschi’s Experiement
    • Lines, Line Segments, and Rays
    • Liquid Volume (Capacity) Problems
    • LM Part of the IS-LM Model
    • Loanable Funds Interpretation of IS Curve
    • Locate Integers on a Number Line
    • Logarithm of a Power
    • Logarithmic Equations
    • Logarithmic Equations 2
    • Logarithmic Scale
    • Long Division with Decimals
    • Long Straddle
    • Long Term Supply Curve and Economic Profit
    • Long-Run Aggregate Supply
    • Loop De Loop Answer (Part 1)
    • Loop De Loop Answer (Part 2)
    • Loop De Loop Question
    • Lower Bound on Forward Settlement Price
    • Lyonel Feininger, Cathedral for Program of the State Bauhaus in Weimar
    • Mach Numbers
    • Macrostates and Microstates
    • Magentism 5
    • Magnetism 10: Electric Motors
    • Magnetism 11: Electric Motors
    • Magnetism 12: Induced Current in a Wire
    • Magnetism 2
    • Magnetism 3
    • Magnetism 4
    • Magnetism 6: Magnetic Field Due to Current
    • Magnetism 7
    • Magnetism 8
    • Magnetism 9: Electric Motors
    • Making 5
    • Making Picture Graphs and Line Plots
    • Making Predictions with Probability
    • Making Sense of Complex Fractions
    • Making the College Transition
    • Making the Most of High School Classes
    • Managing Your Debt Level
    • Marcel Duchamp’s Shovel: Art as Concept
    • Marcel Duchamp, Fountain
    • Marcel Duchamp, The Red Box (Boite-en-Valise), Series F
    • Margin of Error (Example 1)
    • Margin of Error (Example 2)
    • Marginal Cost and Average Total Cost
    • Marginal Revenue and Marginal Cost
    • Marginal Revenue Below Average Total Cost
    • Marginal Utility
    • Mark Rothko, No. 3/No. 13
    • Market Capitalization
    • Market Equilibrium
    • Market Value of Assets
    • Marketing Client Manager: How I Got My Job and Where I’m Going
    • Marketing Client Manager: My Budget and Planning for the Future
    • Marketing Client Manager: What I Do and How Much I Make
    • Marking Data on Line Plots
    • Mary Cassatt, In the Loge
    • Mary Cassatt, The Child’s Bath
    • Mary Cassatt, The Loge
    • Mary Cassatt, Woman with a Pearl Necklace in a Loge
    • Masaccio, Holy Trinity
    • Mask of Agamemnon, Mycenae
    • Mass and Weight Clarification
    • Mass Problems
    • Math Mechanics of Thai Banking Crisis
    • Math Patterns (Example 1)
    • Math Patterns (Example 2)
    • Mathy Versions of MPC and Multiplier (Optional)
    • Maxwell’s Demon
    • Maya Lin, Vietnam Veterans Memorial
    • Mean Absolute Deviation (Example 1)
    • Mean Absolute Deviation (Example 2)
    • Mean Median and Mode
    • Measures of Center
    • Measuring a Golden Statue
    • Measuring Angles
    • Measuring Angles in Degrees
    • Measuring Angles with a Circular Protractor
    • Measuring Area with Partial Unit Squares
    • Measuring Lengths
    • Measuring Lengths with Different Units
    • Measuring the Same Rectangle with Different Unit Squares
    • Measuring Volume as Area Times Length
    • Measuring Volume in Unit Cubes by Decomposing a Shape
    • Measuring Volume Through Decomposition
    • Measuring Volume with Unit Cubes
    • Mechanical Advantage (Part 2)
    • Mechanical Advantage (Part 3)
    • Median and Range Word Problem
    • Median Centroid Right Triangle Example
    • Medians divide into smaller triangles of equal area
    • Medical Resident: How I Got My Job and Where I’m Going
    • Medical Resident: My Budget and Planning for the Future
    • Medical Resident: What I Do and How Much I Make
    • Medicare Overview
    • Medicare Sustainability
    • Medieval Textbook, A
    • Meet the Professional
    • Mega Millions Jackpot Probability
    • Mental Technique for Subtraction Without Regrouping
    • Message to Parents on Paying for College, A
    • Metric System: Units of Distance
    • Metric System: Units of Volume
    • Metric System: Units of Weight
    • Michelangelo Caravaggio, Calling of St. Matthew
    • Michelangelo Caravaggio, Contarelli Chapel, San Luigi dei Francesi, Rome
    • Michelangelo Caravaggio, The Supper at Emmaus
    • Michelangelo’s Early Work
    • Michelangelo, David
    • Michelangelo, Last Judgment
    • Michelangelo, Laurentian Library
    • Michelangelo, Pieta
    • Michelangelo, Sistine Chapel Ceiling
    • Mies van der Rohe, Seagram Building, New York City
    • Milankovitch Cycles Precession and Obliquity
    • Mini-Video on Ion Size
    • Minimum Wage and Price Floors
    • Misleading Line Graphs
    • Missing Measurements for Similar Triangles
    • Missing Number for Addition and Subtraction Within 1,000
    • Missing Numbers in Addition and Subtraction Within 100
    • Missing Value Addition and Subtraction Problems with Negative Numbers (Example 1)
    • Missing Value Addition and Subtraction Problems with Negative Numbers (Example 2)
    • Mistakes in Solving Equations
    • Mitosis, Meiosis, and Sexual Reproduction
    • Mixed Numbers and Improper Fractions
    • Mixed Numbers on a Number Line
    • Mixture problems 1
    • Mixture problems 2
    • Mixture problems 3
    • Moderate Inflation in a Good Economy
    • Molecular and Empirical Formulas
    • Molecular and Empirical Formulas from Percent Composition
    • Moments
    • Moments (Part 2)
    • Momentum: Ice Skater Throws a Ball
    • Monetary and Fiscal Policy
    • Money Supply - M0 M1 and M2
    • Money Supply and Demand Impacting Interest Rates
    • Money Word Problem: Currency Conversion
    • Money Word Problem: Making Change
    • Monomial Greatest Common Factor
    • Monopolist Optimizing Price (Part 1) - Total Revenue
    • Monopolist Optimizing Price (Part 2) - Marginal Revenue
    • Monopolist Optimizing Price (Part 3) - Dead Weight Loss
    • Monopolistic Competition and Economic Profit
    • Monopoly Basics
    • More advanced ratio problem--with Algebra (HD version)
    • More Comparison Word Problems
    • More Complicated Order of Operations Example
    • More Exponential Decay Examples
    • More Involved Multi-Step Equation
    • More Limits
    • More Multiplying Polynomials
    • More on Balance Sheets and Equity
    • More on Elasticity of Demand
    • More on Entropy
    • More on Equivalent Fractions
    • More on Final and Intermediate GDP Contributions
    • More on Internal Energy
    • More on IPOs
    • More on Nash Equilibrium
    • More on Orbitals and Eletron Configuration
    • More on Oxidation States
    • More on Quantitative Easing (and Credit Easing)
    • More on Significant Figures
    • More on the Concept of Multiplication
    • More on Total Revenue and Elasticity
    • More on why SSA is not a postulate
    • More percent problems
    • More Rational Exponents and Exponent Laws
    • More Rigorous Gibbs Free Example / Spontaneity Relationship
    • More trig graphs
    • More Ways to Think About Multiplying
    • Mortgage Back Security Overview
    • Mortgage Interest Rates
    • Mortgage-Backed Securities I
    • Mortgage-Backed Securities II
    • Mortgage-Backed Securities III
    • Mortuary Temple of Hatshepsut and Large Kneeling Statue, New Kingdom, Egypt
    • Motivation for the Futures Exchange
    • MPC and Multiplier
    • Multi-Step Equations 1
    • Multi-Step Equations 2
    • Multi-Step Inequalities
    • Multi-Step Inequalities 2
    • Multiplication 2: The Multiplication Tables
    • Multiplication 3: 10, 11,12 Times Tables
    • Multiplication 5: 2-Digit times a 2-Digit Number
    • Multiplication 6: Multiple Digit Numbers
    • Multiplication 7: Old Video Giving More Examples
    • Multiplication 8: Multiplying Decimals (Old Video)
    • Multiplication and Division Word Problems: Blueberries for Friends
    • Multiplication and Division Word Problems: Building Height
    • Multiplication and Division Word Problems: How Much Soda?
    • Multiplication and Division Word Problems: Marbles for Friends
    • Multiplication and Division Word Problems: Parking Lot
    • Multiplication and Division Word Problems: Party Guests
    • Multiplication and Division Word Problems: Running Distance
    • Multiplication and Division Word Problems: Theater Seats
    • Multiplication as Groups of Objects
    • Multiplication Word Problems: Pieces of Pizza
    • Multiply and Simplify a Radical Expression 1
    • Multiply and Simplify a Radical Expression 2
    • Multiplying 1-Digit Numbers by 10, 100 and 1,000
    • Multiplying 1-Digit Numbers by Multiples of 10, 100 and 1,000
    • Multiplying a Decimal by a Power of 10
    • Multiplying and Dividing Even and Odd Numbers of Negative Factors
    • Multiplying and Dividing in Scientific Notation
    • Multiplying and Dividing Monomials 1
    • Multiplying and Dividing Monomials 2
    • Multiplying and Dividing Monomials 3
    • Multiplying and Dividing Rational Expressions 1
    • Multiplying and Dividing Rational Expressions 2
    • Multiplying and Dividing Rational Expressions 3
    • Multiplying and Dividing with Significant Figures
    • Multiplying and Simplifying Rational Expressions
    • Multiplying Binomials
    • Multiplying Binomials With Radicals
    • Multiplying by Multiples of 10
    • Multiplying by Tens Word Problem
    • Multiplying Challenging Decimals
    • Multiplying Complex Numbers
    • Multiplying Decimals
    • Multiplying Decimals 3
    • Multiplying Decimals: Place Value and Reordering
    • Multiplying Fractions
    • Multiplying Fractions (Old)
    • Multiplying Fractions and Mixed Numbers
    • Multiplying Fractions and Whole Numbers: Two Approaches
    • Multiplying Fractions by Whole Numbers on the Number Line
    • Multiplying Fractions Word Problem
    • Multiplying Fractions Word Problem: Bike Ride
    • Multiplying Fractions Word Problem: Drinking Milk
    • Multiplying Fractions Word Problem: Laundry Detergent
    • Multiplying Fractions Word Problem: Movie Marathon
    • Multiplying Fractions Word Problem: Science Project
    • Multiplying Fractions Word Problems ( ex 1)
    • Multiplying in Scientific Notation
    • Multiplying Mixed Numbers
    • Multiplying Mixed Numbers 1 (ex1)
    • Multiplying Monomials
    • Multiplying Monomials by Polynomials
    • Multiplying Multiples of 10
    • Multiplying Multiples of Powers of 10
    • Multiplying Negative and Positive Fractions
    • Multiplying Negative Real Numbers
    • Multiplying Polynomials
    • Multiplying Polynomials 2
    • Multiplying Polynomials 3
    • Multiplying Polynomials1
    • Multiplying Real Number Application
    • Multiplying Two Fractions
    • Multiplying Two Fractions Using a Number Line
    • Multiplying Unit Fractions and Whole Numbers
    • Multiplying Whole Numbers and Applications 1
    • Multiplying Whole Numbers and Applications 2
    • Multiplying Whole Numbers and Applications 3
    • Multiplying Whole Numbers and Applications 4
    • Multiplying Whole Numbers and Applications 5
    • Multiplying Whole Numbers and Applications 6
    • Multiplying Whole Numbers by 10
    • Multiplying: 2-Digit Number x 1-Digit Number
    • Multiplying: 2-Digit Number x 1-Digit Number (with Carrying)
    • Multiplying: 2-Digit Numbers
    • Multiplying: 2-Digit Numbers (Using the Distributive Property)
    • Multiplying: 3-Digit Number x 1-Digit Number
    • Multiplying: 3-Digit Number x 1-Digit Number (with Carrying)
    • Multiplying: 4-Digit Number x 1 Digit Number (Using a Grid)
    • Multiplying: 4-Digit Number x 1-Digit Number (with Carrying)
    • Multiplying: Using an Area Model (Example 1)
    • Multiplying: Using an Area Model (Example 2)
    • Myosin and Actin
    • Myron of Eleutherae, Discobolus (Discus Thrower)
    • Naming Angles
    • Napoleon and the War of the Fourth Coalition
    • Napoleon and the War of the Third Coalition
    • Napoleon and the Wars of the First and Second Coalitions
    • Napoleon Forced to Abdicate
    • Napoleon’s Peninsular Campaigns
    • Natural Logarithm With a Calculator
    • Natural Selection and the Owl Butterfly
    • Navigation Word Problem
    • Negative and Positive Exponents
    • Negative Exponent Intuition
    • Negative Externalities
    • Negative Numbers Introduction
    • Negative Numbers on the Number Line
    • Negative Signs in Numerators and Denominators
    • Negative Symbol as Opposite
    • Nets of Polyhedra
    • Neuronal Synapses (Chemical)
    • New Operator Definitions
    • Newton’s First Law of Motion
    • Newton’s Second Law of Motion
    • Newton’s Third Law of Motion
    • Nicolas Poussin, Landscape with St. John and Rape of the Sabines
    • Nike Adjusting Her Sandal
    • Non-Linear Systems of Equations 1
    • Non-Linear Systems of Equations 2
    • Non-Linear Systems of Equations 3
    • Nonprofit Founder & Writer: What I Do and Where I’m Going
    • Nonprofit Program Director: How I Got My Job and Where I’m Going
    • Nonprofit Program Director: My Budget and Planning for the Future
    • Nonprofit Program Director: Paying for College Without Debt
    • Nonprofit Program Director: What I Do and How Much I Make
    • Normal and Inferior Goods
    • Normal Colon Tissue
    • Normal Force and Contact Force
    • Normal Force in an Elevator
    • Null and Alternative Hypotheses
    • Number Base Conversion Practice
    • Number Line Addition and Subtraction
    • Number Lines for Addition and Subtraction
    • Number of Solutions to a Linear Equation (Example 1)
    • Number of Solutions to a Linear Equation (Example 2)
    • Number of Solutions to a Linear Equation (Example 3)
    • Number Opposites
    • Number Patterns: Interpreting and Graphing Relationships
    • Number Patterns: Interpreting Relationships
    • Number Patterns: Seeing Relationships
    • Number Patterns: Visualizing Sequence Relationships
    • Number Sets
    • Number Sets 1
    • Number Sets 2
    • Number Sets 3
    • Numerator and Denominator of a Fraction
    • Object Image and Focal Distance Relationship (Proof of Formula)
    • Object Image Height and Distance Relationship
    • Officer on Horseback
    • Oil Paint in Venice
    • Oligopolies and Monopolistic Competition
    • Oligopolies, Duopolies, Collusion and Cartels
    • One-Step Equation Involving Fractions
    • One-Step Inequalities
    • One-Step Inequalities 2
    • Open Market Operations and Quantitative Easing Overview
    • Open-End Mutual Fund Redemptions
    • Open-Ended Mutual Fund (Part 1)
    • Open-Ended Mutual Funds
    • Opportunity Cost
    • Opposite of a Given Number
    • Opposite of a Number
    • Opposite of a Polynomial
    • Optimal Angle for Projectile Part 1
    • Optimal Angle for Projectile Part 2- Hangtime
    • Optimal Angle for Projectile Part 3- Horizontal Distance as a Function of Angle (and Speed)
    • Optimal Angle for Projectile Part 4- Finding the Optimal Angle and Distance with a bit of Calculus
    • Optimal Point on Budget Line
    • Option Expiration and Price
    • Optional Calculus Proof to Show that MR has Twice Slopes of Demand
    • Options for Tracking and Managing Your Spending
    • Orbitals
    • Order of Operations
    • Order of Operations 1
    • Order of Operations 2
    • Order of Operations 2 (Old)
    • Order of Operations with Exponents
    • Ordered Pair Solutions of Equations
    • Ordering Difference of Variables on a Number Line
    • Ordering Fractions
    • Ordering Fractions
    • Ordering Lines by Length
    • Ordering Negative Numbers
    • Ordering Numeric Expressions
    • Ordering Positive and Negative Rational Numbers
    • Ordering Triangle Sides and Angles
    • Origins of Algebra
    • Other Periodic Table Trends
    • Other Triangle Congruence Postulates
    • Otto Dix, Portrait of Sylvia von Harden
    • Outdoor Education Professional: Becoming an Outdoor Educator
    • Outdoor Education Professional: How I Got My Job and Where I’m Going
    • Outdoor Education Professional: My Budget and Planning for the Future
    • Outdoor Education Professional: What I Do and How Much I Make
    • Outdoor Education Professional: Working as an Outdoor Educator
    • Overtaking Word Problem
    • Overview of FAFSA and CSS PROFILE
    • Overview of Fractional Reserve Banking
    • Overview of the ACT
    • Overview of the SAT
    • Overview: Applying to College
    • Overview: Exploring College Options
    • Overview: Making High School Count
    • Overview: Paying for College
    • Oxidation and Reduction in Cellular Respiration
    • Oxidation and Reduction Review from Biological Point of View
    • Oxidative Phosphorylation and Chemiosmosis
    • Ozone Layer and Eukaryotes Show Up in the Proterozoic Eon
    • P/E Conundrum
    • P/E Discussion
    • Pablo Picasso, Les Demoiselles d’Avignon
    • Pablo Picasso, Still-Life with Chair Caning
    • Palace and Grave, Mycenae
    • Pangaea
    • Pantheon, The
    • Parabola Focus and Directrix 1
    • Parabolic Mirrors 2
    • Parabolic Mirrors and Real Images
    • Parallax in Observing Stars
    • Parallel Line Equation
    • Parallel Lines
    • Parallel Lines 2
    • Parallel lines 3
    • Parallelogram on the Coordinate Plane
    • Parametric Equations 1
    • Parametric Equations 2
    • Parametric Equations 3
    • Parametric Equations 4
    • Parsec Definition
    • Parsing Gross Domestic Product
    • Part 1 of Proof of Heron’s Formula
    • Part 2 of the Proof of Heron’s Formula
    • Partial Fraction Expansion 1
    • Partial Fraction Expansion 2
    • Partial Fraction Expansion 3
    • Partial Pressure
    • Partial Quotient Division
    • Partial Quotient Method of Division 2
    • Parts of a Cell
    • Parts of a Circle
    • Passed Bike Word Problem
    • Passing Trains
    • Pattern of US Cold War Interventions
    • Patterns in Multiplication Tables
    • Patterns in Raising 1 and -1 to Different Powers
    • Patterns in Sequences 1
    • Patterns in Sequences 2
    • Paul Cezanne, Bathers (Les Grandes Baigneuses)
    • Paul Cezanne, Still Life with Apples
    • Paul Cezanne, The Large Bathers
    • Paul Cezanne, The Red Rock
    • Paul Gauguin, The Red Cow
    • Paul Gauguin, Vision After the Sermon, or Jacob Wrestling with the Angel
    • Paul Klee, Twittering Machine
    • Paul Troost, House of (German) Art
    • Payday Loans
    • Paying Back Your Loans
    • Paying Doctors
    • Pearson’s Chi-Square Test for Goodness of Fit
    • Pegging the Yuan
    • Percent and Decimals
    • Percent Word Problem: Penguins at the Zoo
    • Percent Word Problem: Recycled Cans
    • Percentage of a Whole Number
    • Percentage Tax on Hamburgers
    • Perfect Competition
    • Perfect Inelasticity and Perfect Elasticity of Demand
    • Performing Arithmetic Calculations on Units of Volume
    • Perimeter and Area Basics
    • Perimeter and Area of a Non-Standard Polygon
    • Perimeter and Unit Conversion
    • Perimeter of a Polygon
    • Perimeter of a Shape
    • Perimeter Word Problem: Skating Rink
    • Perimeter Word Problem: Tables
    • Periodic Table Trends: Ionization Energy
    • Permutations
    • Permutations and Combinations 1
    • Permutations and Combinations 2
    • Permutations and Combinations 3
    • Permutations and Combinations 4
    • Perpendicular Line Slope
    • Perpendicular Lines
    • Perpendicular lines 2
    • Perpendicular Radius Bisects Chord
    • Personal Bankruptcy: Chapters 7 and 13
    • Peter Paul Rubens, Arrival (or Disembarkation) of Marie de Medici at Marseilles
    • Peter Paul Rubens, Elevation of the Cross
    • Peter Paul Rubens, The Consequences of War
    • Peter Paul Rubens, The Presentation of the Portrait of Marie de Medici
    • pH of a Weak Acid
    • pH of a Weak Base
    • pH, pOH of Strong Acids and Bases
    • Phase Diagrams
    • Phases of Meiosis
    • Phases of Mitosis
    • Phillips Curve
    • Photorespiration
    • Photosynthesis
    • Photosynthesis: Calvin Cycle
    • Photosynthesis: Light Reactions 1
    • Photosynthesis: Light Reactions and Photophosphorylation
    • Physical Therapist: How I Got My Job and Where I’m Going
    • Physical Therapist: How I Paid for College and Physical Therapy School
    • Physical Therapist: My Budget and Planning for the Future
    • Physical Therapist: What I Do and How Much I Make
    • Picture Graphs
    • Pierre-Auguste Renoir, La Loge
    • Pierre-Auguste Renoir, Moulin de la Galette
    • Pierre-Auguste Renoir, The Great Boulevards
    • Pierre-Auguste Renoir, The Large Bathers
    • Piet Mondrian, Composition No. II, with Red and Blue
    • Pieter Bruegel the Elder, Hunters in the Snow (Winter)
    • Pieter Bruegel the Elder, Peasant Wedding
    • Pieter Bruegel the Elder, The Tower of Babel
    • Pietro Cavallini, The Last Judgement
    • pKa and pKb Relationship
    • Place Value 1
    • Place Value 2
    • Place Value 3
    • Place Value Blocks
    • Place Value Example with 25
    • Place Value Example with 42
    • Place Value for Decimals Greater than One
    • Place Value when Multiplying and Dividing by 10
    • Place Value: Monkeys for a Party
    • Placing Positive and Negative Decimals on a Number Line
    • Plate Tectonics- Difference Between Crust and Lithosphere
    • Plate Tectonics- Evidence of Plate Movement
    • Plate Tectonics- Geological Features of Convergent Plate Boundaries
    • Plates Moving Due to Convection in Mantle
    • Plot Ordered Pairs
    • Plotting (x, y) Relationships
    • Plotting Decimals on a Number Line
    • Plotting Projectile Displacement, Acceleration, and Velocity
    • Point Line Distance and Angle Bisectors
    • Point-slope and standard form
    • Points on a Number Line
    • Poisson Process 1
    • Poisson Process 2
    • Polar Coordinates 1
    • Polar Coordinates 2
    • Polar Coordinates 3
    • Police Officer: How I Got My Job and Where I’m Going
    • Police Officer: My Budget and Planning for the Future
    • Police Officer: What I Do and How Much I Make
    • Polyalphabetic Cipher
    • Polynomial Divided by Monomial
    • Polynomials 2
    • Polynomials1
    • Ponzi Schemes
    • Population Health Director: How I Got My Job and Where I’m Going
    • Population Health Director: Learning from Every Job
    • Population Health Director: My Budget and Planning for the Future
    • Population Health Director: What I Do and How Much I Make
    • Positive Externalities
    • Potassium-Argon (K-Ar) Dating
    • Potential Energy Stored in a Spring
    • Powers of 10: Patterns
    • Powers of Fractions
    • Powers of Zero
    • Precession Causing Perihelion to Happen Later
    • Precocious Puberty
    • Present Value 2
    • Present Value 3
    • Present Value 4 (and Discounted Cash Flow)
    • Price and Market Capitalization
    • Price Behavior After Announced Acquisition
    • Price Elasticity of Demand
    • Price of Related Products and Demand
    • Primaries and Caucuses
    • Prime Factorization
    • Prime Numbers
    • Prisoners’ Dilemma and Nash Equilibrium
    • Probability (part 2)
    • Probability (part 3)
    • Probability (part 4)
    • Probability (part 5)
    • Probability (part 6)
    • Probability (part 7)
    • Probability (part 8)
    • Probability 1 Module Examples
    • Probability and Combinations (part 2)
    • Probability Density Functions
    • Probability from Compound Sample Space
    • Probability of Dependent Events
    • Probability of Dependent Events 2
    • Probability of More Complex outcome
    • Probability using Combinations
    • Probability with Playing Cards and Venn Diagrams
    • Problem involving angle derived from square and circle
    • Producer Surplus
    • Product Design Consultant: How I Got My Job and Where I’m Going
    • Product Design Consultant: My Budget and Planning for the Future
    • Product Design Consultant: What I Do and How Much I Make
    • Product Designer: Aligning Career with Personal Values
    • Product Designer: How I Got My Job and Where I’m Going
    • Product Designer: My Budget and Planning for the Future
    • Product Designer: What I Do and How Much I Make
    • Product of Functions
    • Production Possibilities Frontier
    • Products and Exponents Raised to an Exponent Properties
    • Professional Antigen Presenting Cells (APC) and MHC II complexes
    • Projectile at an Angle
    • Projectile Height Given Time
    • Projectile Motion with Ordered Set Notation
    • Projectile on an Incline
    • Proof (Advanced) Field from Infinite Plate (Part 1)
    • Proof (Advanced) Field from Infinite Plate (Part 2)
    • Proof - Corresponding Angle Equivalence Implies Parallel Lines
    • Proof - Diagonals of a Parallelogram Bisect Each Other
    • Proof - Opposite Angles of Parallelogram Congruent
    • Proof - Opposite Sides of Parallelogram Congruent
    • Proof - Rhombus Area Half Product of Diagonal Length
    • Proof - Rhombus Diagonals are Perpendicular Bisectors
    • Proof - Sum of Measures of Angles in a Triangle are 180
    • Proof - Triangle Altitudes are Concurrent (Orthocenter)
    • Proof by Induction
    • Proof-Vertical Angles are Equal
    • Proof: A(log B) = log (B^A), log A - log B = log (A/B)
    • Proof: cos(a+b) = (cos a)(cos b)-(sin a)(sin b)
    • Proof: Hyperbola Foci
    • Proof: Law of Sines
    • Proof: lim (sin x)/x
    • Proof: log a + log b = log ab
    • Proof: S (or Entropy) is a Valid State Variable
    • Proof: sin(a+b) = (cos a)(sin b) + (sin a)(cos b)
    • Proof: U=(3/2)PV or U=(3/2)nRT
    • Proof: Volume Ratios in a Carnot Cycle
    • Proper and Improper Fractions
    • Properties and Patterns for Multiplication
    • Properties of Multiplication
    • Properties of Whole Numbers
    • Proportionality Between Side Length and Perimeter
    • Proportionality Constant for Direct Variation
    • Proportionality Word Problem: Bananas
    • Proportionality Word Problem: Hot Dogs
    • Proportionality Word Problem: Movie Ticket and Popcorn
    • Proving that the Centroid is 2-3rds along the Median
    • Punnett Square Fun
    • Pure Numbers and Significant Digits
    • Purpose and Change Coach: How I Got My Job and Where I’m Going
    • Purpose and Change Coach: My Budget and Planning for the Future
    • Purpose and Change Coach: Navigating Career Change
    • Purpose and Change Coach: What I Do and How Much I Make
    • Put as Insurance
    • Put Payoff Diagram
    • Put vs. Short and Leverage
    • Put Writer Payoff Diagrams
    • Put-Call Parity
    • Put-Call Parity Arbitrage I
    • Put-Call Parity Arbitrage II
    • Put-Call Parity Clarification
    • PV-diagrams and Expansion Work
    • Pythagorean Theorem 1
    • Pythagorean Theorem 2
    • Pythagorean Theorem 3
    • Pythagorean Theorem Application
    • Pythagorean Theorem II
    • Pythagorean Theorem Proof Using Similarity
    • Quadrants of Coordinate Plane
    • Quadratic Equation part 2
    • Quadratic Equations in Standard Form
    • Quadratic Formula (proof)
    • Quadratic Formula 1
    • Quadratic Formula 2
    • Quadratic Formula 3
    • Quadratic Functions 1
    • Quadratic Functions 2
    • Quadratic Functions 3
    • Quadratic Inequalities
    • Quadratic Inequalities (Visual Explanation)
    • Quadrilateral Overview
    • Quadrilateral Properties
    • Quadrilaterals: Classifying Shapes
    • Quadrilaterals: Find the Type
    • Quadrilaterals: Kites as a Geometric Shape
    • Quantitative Easing
    • Quarrying and Carving Marble
    • Quasar Correction
    • Quasars
    • Quasistatic and Reversible Processes
    • Quotient of Functions
    • Race Cars with Constant Speed Around Curve
    • Rachel Ruysch, Fruit and Insects
    • Radians and Degrees
    • Radical Equation Application Problem
    • Radical Equivalent to Rational Exponents
    • Radical Equivalent to Rational Exponents 2
    • Radius of Observable Universe
    • Radius of Observable Universe (Correction)
    • Raising a Number to the 0 and 1st Power
    • Raising Money for a Startup
    • Ramesses II, Egypt
    • Random Predictions for 2060
    • Range and Mid-Range
    • Raphael, Alba Madonna
    • Raphael, Galatea
    • Raphael, Portrait of Pope Julius II
    • Raphael, The School of Athens and the Disputa
    • Rate Problem Involving Rational Equations
    • Rate Problem Using Fractions
    • Ratio problem with basic algebra (new HD)
    • Ratio Word Problem: Boys to Girls
    • Ratio Word Problem: Centimeters to Kilometers
    • Rational Equations
    • Rational Exponents and Exponent Laws
    • Rational Inequalities
    • Rational Inequalities 2
    • Rational Number Word Problem with a Fraction and Percent
    • Rational Number Word Problem with Proportions
    • Rational Number Word Problem with Ratios
    • Rational Number Word Problem: Decimals
    • Rational Number Word Problem: Fractions and Units of Time
    • Rational Number Word Problem: Money
    • Rationalizing Denominators of Expressions
    • Rationalizing Denominators With Conjugates
    • Ratios as Fractions
    • Ratios as Fractions in Simplest Form
    • Raymond Duchamp-Villon, Horse
    • Reactions in Equilibrium
    • Reading a Bar Graph
    • Reading Bar Charts
    • Reading Bar Graphs
    • Reading Box-and-Whisker Plots
    • Reading line Graphs
    • Reading Pictographs
    • Reading Pie Graphs (Circle Graphs)
    • Real and Nominal Return
    • Real GDP and Nominal GDP
    • Real GDP Driving Price
    • Rearrange Formulas to Isolate Specific Variables
    • Reasonable Samples
    • Receiving an Admissions Decision: Admit, Deny or Waitlist
    • Reciprocal of a Mixed Number
    • Recognizing Angles
    • Recognizing Direct and Inverse Variation
    • Recognizing Divisibility
    • Recognizing Fractions Greater than 1
    • Recognizing Functions (Example 1)
    • Recognizing Functions (Example 2)
    • Recognizing Functions (Example 3)
    • Recognizing Functions (Example 4)
    • Recognizing Linear Functions
    • Recognizing Odd and Even Functions
    • Recognizing Prime Numbers
    • Recognizing Rational and Irrational Numbers
    • Recognizing Shapes
    • Recognizing the Greater Number
    • Reconciling Thermodynamic and State Definitions of Entropy
    • Rectangle Area as Product of Dimensions
    • Red Blood Cells
    • Red Shift
    • Redox Reactions
    • Reflection on the Coordinate Plane
    • Refraction and Snell’s Law
    • Refraction in Water
    • Refraction of Seismic Waves
    • Registered Nurse and Construction Business Owner: Our Budget and Planning for Our Future
    • Registered Nurse: How I Got My Job and Where I’m Going
    • Registered Nurse: What I Do and How Much I Make
    • Regrouping Numbers into Various Place Values
    • Regrouping When Adding a Two-Digit and a One-Digit Number
    • Regrouping When Subtracting a One-Digit Number from a Two-Digit Number
    • Regrouping Whole Number Place Values
    • Regrouping Whole Numbers (Example 1)
    • Regrouping Whole Numbers (Example 2)
    • Regrouping Whole Numbers (Example 3)
    • Relating Addition and Subtraction
    • Relating Multiplication to Division
    • Relation Between Nominal and Real Returns and Inflation
    • Relations and Functions
    • Relationship Between Angular Velocity and Speed
    • Relationship Between Bond Prices and Interest Rates
    • Relief from the Arch of Titus
    • Rembrandt, Self-Portraits
    • Rembrandt, The Anatomy Lesson of Dr. Tulp
    • Rembrandt, The Night Watch
    • Rene Magritte, The Treachery of Images (Ceci N’est Pas une Pipe)
    • Rent Control and Deadweight Loss
    • Renting vs. Buying (Detailed Analysis)
    • Renting vs. Buying a Home
    • Renting vs. Buying a Home (Part 2)
    • Repeated Addition Word Problem
    • Representation & Abstraction: Looking at Millais and Newman
    • Representing a Number as a Decimal, Percent, and Fraction
    • Representing a Number as a Decimal, Percent, and Fraction 2
    • Representing and Comparing Rates
    • Representing Functions as Graphs
    • Repurchase Agreements (Repo Transactions)
    • Requesting Letters of Recommendation
    • Rethinking Three-Digit Addition for Mental Calculation
    • Return on Capital
    • Review of B cells, CD4 + T cells and CD8+ T cells
    • Review of China US Currency Situation
    • Review of Revenue and Cost Graphs for a Monopoly
    • Review of Triangle Properties
    • Rewriting a Fraction as a Decimal (Example 1)
    • Rewriting a Fraction as a Decimal (Example 2)
    • Rewriting a Fraction as a Decimal to the Hundredths Place
    • Rewriting Fractions as Decimals
    • Rhombus Diagonals
    • Richard Redgrave, The Sempstress
    • Right Triangles Inscribed in Circles (Proof)
    • Risk and Reward Introduction
    • Risks of Keynesian Thinking
    • Ritual of the Bedside Exam
    • ROA Discussion 1
    • ROA Discussion 2
    • Robert Motherwell, Elegy to the Spanish Republic No. 57
    • Robert Rauschenberg, Bed
    • Robert Smithson, Spiral Jetty
    • Rogier van der Weyden, The Last Judgment
    • Role of Phagocytes in Innate or Nonspecific Immunity
    • Role of the Sarcoplasmic Reticulum in Muscle Cells
    • Rosa Bonheur, Plowing in the Nivernais
    • Rosa Bonheur, Sheep in the Highlands
    • Rosetta Stone
    • Rotation on the Coordinate Plane
    • Roth IRAs
    • Rounding Decimals
    • Rounding to Estimate Differences
    • Rounding to Estimate Sums
    • Rounding to Estimate Sums 2
    • Rounding to the Nearest 10
    • Rounding to the Nearest 10 and 100
    • Rounding to the Nearest 100
    • Rounding Whole Numbers 1
    • Rounding Whole Numbers 2
    • Rounding Whole Numbers 3
    • Rounding Whole Numbers: Missing Digit
    • Roy Lichtenstein, Rouen Cathedral Set V
    • Saint Mark’s Basilica, Venice
    • Saint Peter’s Basilica, Vatican City
    • Sal Khan’s Story: Applying to College
    • Sal Khan’s Story: College Admissions
    • Sal Khan’s Story: Exploring College Options
    • Sal Khan’s Story: Making High School Count
    • Sal Khan’s Story: Paying for College
    • Sal Khan’s Story: Wrapping Up
    • Salon Owner: How I Got My Job and Where I’m Going
    • Salon Owner: My Budget and Planning for the Future
    • Salon Owner: Starting and Owning a Salon Business
    • Salon Owner: What I Do and How Much I Make
    • Salvador Dali, Metamorphosis of Narcissus
    • Salvador Dali, The Persistence of Memory
    • Sample Essay 1 with Admissions Feedback
    • Sample Essay 2 with Admissions Feedback
    • Sampling Distribution of a Sample Proportion
    • Sampling Distribution of the Difference Between Sample Means
    • Sandro Botticelli, La Primavera (Allegory of Spring)
    • Sandro Botticelli, The Birth of Venus
    • SAT Math: Angles, Arc Lengths and Trig Functions (Basic Example)
    • SAT Math: Angles, Arc Lengths and Trig Functions (Harder Example)
    • SAT Math: Center, Spread and Shape of Distributions
    • SAT Math: Circle Equations (Basic Example)
    • SAT Math: Circle Equations (Harder Example)
    • SAT Math: Circle Theorems (Basic Example)
    • SAT Math: Circle Theorems (Harder Example)
    • SAT Math: Complex Numbers (Basic Example)
    • SAT Math: Complex Numbers (Harder Example)
    • SAT Math: Congruence and Similarity (Basic Example)
    • SAT Math: Congruence and Similarity (Harder Example)
    • SAT Math: Data Collection and Conclusions (Basic Example)
    • SAT Math: Data Collection and Conclusions (Harder Example)
    • SAT Math: Data Inferences (Basic Example)
    • SAT Math: Data Inferences (Harder Example)
    • SAT Math: Function Notation (Basic Example)
    • SAT Math: Function Notation (Harder Example)
    • SAT Math: Graphing Linear Equations (Basic Example)
    • SAT Math: Graphing Linear Equations (Harder Example)
    • SAT Math: Interpreting Linear Functions (Basic Example)
    • SAT Math: Interpreting Linear Functions (Harder Example)
    • SAT Math: Interpreting Nonlinear Expressions (Basic Example)
    • SAT Math: Interpreting Nonlinear Expressions (Harder Example)
    • SAT Math: Isolating Quantities (Basic Example)
    • SAT Math: Isolating Quantities (Harder Example)
    • SAT Math: Key Features of Graphs (Basic Example)
    • SAT Math: Key Features of Graphs (Harder Example)
    • SAT Math: Linear and Exponential Growth (Basic Example)
    • SAT Math: Linear and Exponential Growth (Harder Example)
    • SAT Math: Linear and Quadratic Systems (Basic Example)
    • SAT Math: Linear and Quadratic Systems (Harder Example)
    • SAT Math: Linear Equation Word Problems
    • SAT Math: Linear Function Word Problems (Basic Example)
    • SAT Math: Linear Function Word Problems (Harder Example)
    • SAT Math: Linear Inequality Word Problems (Basic Example)
    • SAT Math: Linear Inequality Word Problems (Harder Example)
    • SAT Math: Manipulating Quadratic and Exponential Expressions (Basic Example)
    • SAT Math: Manipulating Quadratic and Exponential Expressions (Harder Example)
    • SAT Math: Nonlinear Equation Graphs (Basic Example)
    • SAT Math: Nonlinear Equation Graphs (Harder Example)
    • SAT Math: Operations with Polynomials (Basic Example)
    • SAT Math: Operations with Polynomials (Harder Example)
    • SAT Math: Operations with Rational Expressions
    • SAT Math: Percents (Basic Example)
    • SAT Math: Percents (Harder Example)
    • SAT Math: Polynomial Factors and Graphs (Basic Example)
    • SAT Math: Polynomial Factors and Graphs (Harder Example)
    • SAT Math: Quadratic and Exponential Word Problems (Basic Example)
    • SAT Math: Quadratic and Exponential Word Problems (Harder Example)
    • SAT Math: Radical and Rational Equations (Basic Example)
    • SAT Math: Radical and Rational Equations (Harder Example)
    • SAT Math: Radicals and Rational Exponents (Basic Example)
    • SAT Math: Radicals and Rational Exponents (Harder Example)
    • SAT Math: Ratios, Rates and Proportions (Basic Example)
    • SAT Math: Ratios, Rates and Proportions (Harder Example)
    • SAT Math: Right Triangle Geometry (Basic Example)
    • SAT Math: Right Triangle Geometry (Harder Example)
    • SAT Math: Right Triangle Word Problems (Basic Example)
    • SAT Math: Right Triangle Word Problems (Harder Example)
    • SAT Math: Scatter Plots (Basic Example)
    • SAT Math: Scatter Plots (Harder Example)
    • SAT Math: Solving Linear Equations and Linear Inequalities (Basic Example)
    • SAT Math: Solving Linear Equations and Linear Inequalities (Harder Example)
    • SAT Math: Solving Quadratic Equations (Basic Example)
    • SAT Math: Solving Quadratic Equations (Harder Example)
    • SAT Math: Solving Systems of Linear Equations (Basic Example)
    • SAT Math: Solving Systems of Linear Equations (Harder Example)
    • SAT Math: Structure in Expressions (Basic Example)
    • SAT Math: Structure in Expressions (Harder Example)
    • SAT Math: Systems of Linear Equations Word Problems
    • SAT Math: Systems of Linear Inequalities Word Problems (Basic Example)
    • SAT Math: Systems of Linear Inequalities Word Problems (Harder Example)
    • SAT Math: Table Data (Basic Example)
    • SAT Math: Table Data (Harder Example)
    • SAT Math: Units (Basic Example)
    • SAT Math: Units (Harder Example)
    • SAT Math: Volume Word Problems (Basic Example)
    • SAT Math: Volume Word Problems (Harder Example)
    • SAT Reading: History and Social Studies - How-To Part 1
    • SAT Reading: History and Social Studies - How-To Part 2
    • SAT Reading: Literature - How-To Part 1
    • SAT Reading: Literature - How-To Part 2
    • SAT Reading: Science - How-To Part 1
    • SAT Reading: Science - How-To Part 2
    • SAT Reading: Social Science - How-To Part 1
    • SAT Reading: Social Science - How-To Part 2
    • SAT Writing: Argumentative - How-To Example
    • SAT Writing: Informative - How-To Example
    • SAT Writing: Narrative - How-To Example
    • Scale Drawing Word Problem: Blueprint
    • Scale Factors and Area
    • Scale of Distance to Closest Stars
    • Scale of Earth and Sun
    • Scale of Solar System
    • Scale of the Galaxy
    • Scale of the Large
    • Scale of the Small
    • Scaling Down a Triangle by Half
    • Scatter Plot Word Problem: American Smoking Trends
    • School Social Worker: How I Got My Job and Where I’m Going
    • School Social Worker: My Budget and Planning for the Future
    • School Social Worker: What I Do and How Much I Make
    • Scientific Notation (Old)
    • Scientific notation 1
    • Scientific notation 2
    • Scientific notation 3
    • Scientific Notation 3 (New)
    • Scientific Notation Example 2
    • Scientific Notation Examples
    • Scientific Notation I
    • Scientific Notation Word Problem: Red Blood Cells
    • Searching for Scholarships
    • Seasons Aren’t Dictated By Closeness to Sun
    • Secondary Active Transport in the Nephron
    • Seeing Multiplication as Scaling with Fractions
    • Seismic Waves
    • Selecting Your College
    • Senior Product Manager and Senior Software Engineer: Our Budget and Planning for Our Future
    • Senior Product Manager: How I Got My Job and Where I’m Going
    • Senior Product Manager: What I Do and How Much I Make
    • Senior Software Engineer: How I Got My Job and Where I’m Going
    • Senior Software Engineer: What I Do and How Much I Make
    • Sequences and Series (part 1)
    • Sequences and series (part 2)
    • Series Sum Example
    • Severe Contango Generally Bearish
    • Sex-Linked Traits
    • Shifts In Aggregate Demand
    • Short Run Aggregate Supply
    • Short-Run Oil Prices
    • Shorting Stock
    • Shorting Stock 2
    • Sienese Art: Duccio, Simone Martini and Ambrogio Lorenzetti
    • Significant Figures
    • Similar Triangle Basics
    • Similar Triangle Example Problems
    • Similar triangles
    • Similar triangles (part 2)
    • Similar Triangles Corresponding Sides and Angles
    • Similarity Example Problems
    • Similarity example where same side plays different roles
    • Similarity Postulates
    • Simple Analysis of Cost per Job Saved from Stimulus
    • Simple Equations
    • Simple Fractional Reserve Accounting (Part 2)
    • Simple Merger Arb with Share Acquisition
    • Simple Probability
    • Simple Quadratic Equation
    • Simplifying a Complicated Expression into Scientific Notation
    • Simplifying an Expression With Multiple Variables
    • Simplifying Cube Roots
    • Simplifying Expressions Involving Rational Numbers
    • Simplifying Expressions with Exponents
    • Simplifying Expressions with Exponents 2
    • Simplifying Expressions with Exponents 3
    • Simplifying First for Subtracting Rational Expressions
    • Simplifying Multivariable Polynomial
    • Simplifying Radical Expressions 1
    • Simplifying Radical Expressions 2
    • Simplifying Radical Expressions 3
    • Simplifying Radicals
    • Simplifying Rates and Ratios
    • Simplifying Rational Expressions 1
    • Simplifying Rational Expressions 2
    • Simplifying Rational Expressions 3
    • Simplifying Rational Expressions Example 2
    • Simplifying Square Roots
    • Simplifying Square Roots Comment Response
    • Simply a Polynomial
    • Site Reliability Engineer: How I Got My Job and Where I’m Going
    • Site Reliability Engineer: My Budget and Planning for the Future
    • Site Reliability Engineer: What I Do and How Much I Make
    • Skill of Describing, The
    • Skip Counting by 100
    • Skip Counting by 5
    • Slice a Rectangular Pyramid
    • Slope and Y-intercept Intuition
    • Slope Example
    • Slope of a line
    • Slope of a Line 2
    • Slope of a Line 3
    • Snell’s Law Examples 1
    • Snell’s Law Examples 2
    • Social Security Intro
    • Sodium Potassium Pump
    • Solid Geometry Volume
    • Solubility
    • Solving a Consecutive Integer Problem Algebraically
    • Solving a quadratic by factoring
    • Solving Addition and Subtraction Word Problems Using a Number Line
    • Solving and graphing linear inequalities in two variables 1
    • Solving Application Problems Involving Units of Volume
    • Solving Equations 1
    • Solving Equations 2
    • Solving Equations with the Distributive Property
    • Solving Equations with the Distributive Property 2
    • Solving Exponential Equations
    • Solving Factored Equations
    • Solving for a Variable
    • Solving for a Variable 2
    • Solving for an Angle
    • Solving for the Missing Fraction
    • Solving for Time
    • Solving Inequalities
    • Solving Logarithmic Equations
    • Solving Logarithmic Equations
    • Solving One-Step Equations
    • Solving One-Step Equations 2
    • Solving Percent Problems 2
    • Solving Percent Problems 3
    • Solving Problems with Bar Graphs
    • Solving Problems with Bar Graphs
    • Solving Problems with Pictographs
    • Solving Quadratic Equations by Factoring
    • Solving Quadratic Equations by Factoring 2
    • Solving Quadratic Equations by Factoring 3
    • Solving Quadratics by Factoring
    • Solving Radical Equations
    • Solving Radical Equations 1
    • Solving Radical Equations 2
    • Solving Radical Equations 3
    • Solving Rational Equations 1
    • Solving Rational Equations 2
    • Solving Rational Equations 3
    • Solving systems by elimination
    • Solving systems by elimination 2
    • Solving systems by elimination 3
    • Solving systems by graphing
    • Solving Systems by Graphing
    • Solving systems by graphing 2
    • Solving systems by graphing 3
    • Solving systems by substitution 1
    • Solving systems by substitution 2
    • Solving systems by substitution 3
    • Solving the Troll Riddle Visually
    • SOPA and PIPA
    • Sorting Absolute Values on the Number Line
    • Soultions to Three Variable System
    • Space Station Speed in Orbit
    • Special Polynomials Products 1
    • Special Products of Polynomials 1
    • Special Products of Polynomials 2
    • Special Products of Polynomials 3
    • Species
    • Specific Heat, Heat of Fusion and Vaporization
    • Spectrophotometry Example
    • Spectrophotometry Introduction
    • Specular and Diffuse Reflection
    • Specular and Diffuse Reflection 2
    • Speed Translation
    • Spring Potential Energy Example (Mistake in Math)
    • Square a Binomial
    • Square Root of a Decimal
    • Squeeze Theorem
    • SSS to Show a Radius is Perpendicular to a Chord that it Bisects
    • Stagflation
    • Standard of Ur
    • Star Field and Nebula Images
    • Start-Up CEO: Advice for Running a Start-Up
    • Start-Up CEO: How I Got My Job and Where I’m Going
    • Start-Up CEO: My Budget and Planning for the Future
    • Start-Up CEO: What I Do and How Much I Make
    • States of Matter
    • States of Matter Follow-Up
    • Static and Kinetic Friction Example
    • Statistical Questions
    • Statistical Significance of an Experiment (Simulation)
    • Stellar Distance Using Parallax
    • Stellar Parallax
    • Stellar Parallax Clarification
    • Stem-and-Leaf Plots
    • Stenosis, Ischemia and Heart Failure
    • Stock Dilution
    • Stoichiometry
    • Stoichiometry Example Problem 1
    • Stoichiometry Example Problem 2
    • Stoichiometry of a Reaction in Solution
    • Stoichiometry: Limiting Reagent
    • Strokes
    • Strong Acid Titration
    • Structure of the Earth
    • Student Story: Admissions Essay About a Formative Experience
    • Student Story: Admissions Essay About a Meaningful Poem
    • Student Story: Admissions Essay About a Past Mistake
    • Student Story: Admissions Essay About Community Impact
    • Student Story: Admissions Essay About Personal Identity
    • Student Story: Admissions Interview
    • Student Story: Applying for Scholarships
    • Student Story: College Brings New Friends, Learning and Freedom
    • Student Story: College Expands Opportunities
    • Student Story: College Increases Confidence
    • Student Story: College Offers Exposure to Diversity
    • Student Story: Extracurriculars that Are a Passion
    • Student Story: Extracurriculars that Are Leadership Opportunities
    • Student Story: Extracurriculars that Are Nontraditional
    • Student Story: Extracurriculars that Are Self Created
    • Student Story: Extracurriculars that Carry Over from High School to College
    • Student Story: High School Classes
    • Student Story: Overcoming Anxiety About Not Fitting In as an Obstacle to College
    • Student Story: Overcoming Cultural Obstacles to College
    • Student Story: Overcoming Family Obstacles to College
    • Student Story: Overcoming Financial Obstacles to College
    • Student Story: Overcoming Immigration Obstacles to College
    • Student Story: Overcoming Lack of High School Support as an Obstacle to College
    • Student Story: Overcoming Social Obstacles to College
    • Student Story: Overcoming the Financial Aid Process as an Obstacle to College
    • Student Story: Prioritizing Financial Aid in the College Search
    • Student Story: Prioritizing Financial Aid, Major and Location in the College Search
    • Student Story: Prioritizing Location in the College Search
    • Student Story: Prioritizing Size, Campus, Major and Selectivity in the College Search
    • Student Story: Prioritizing Size, Selectivity, Diversity and Financial Aid in the College Search
    • Student Story: Relying on Scholarships when Facing Immigration Challenges
    • Student Story: Searching for Scholarships
    • Student Story: Standardized Tests
    • Student Story: Work Study as a Study Hall
    • Student Story: Work Study as an Opportunity to Learn
    • Substitution Method
    • Substitution Method 2
    • Substitution Method 3
    • Substitution with Negative Numbers
    • Subtracting 1 vs. Subtracting 10
    • Subtracting 10 or 100
    • Subtracting 14 - 6
    • Subtracting and Simplifying Radicals
    • Subtracting Complex Numbers
    • Subtracting Decimals
    • Subtracting Decimals (Example 1)
    • Subtracting Decimals (Example 2)
    • Subtracting Decimals (Old)
    • Subtracting Decimals Word Problem
    • Subtracting Fractions
    • Subtracting Fractions (ex 1)
    • Subtracting Fractions with Common Denominators (ex 1)
    • Subtracting Fractions with Unlike Denominators
    • Subtracting Fractions with Unlike Denominators Word Problem
    • Subtracting Hundreds, Tens and Ones
    • Subtracting in Scientific Notation
    • Subtracting Mixed Numbers
    • Subtracting Mixed Numbers 2
    • Subtracting Mixed Numbers Introduction
    • Subtracting Mixed Numbers with Regrouping
    • Subtracting Mixed Numbers Word Problem
    • Subtracting Polynomials
    • Subtracting Polynomials With Multiple Variables
    • Subtracting Rational Expressions
    • Subtracting Real Numbers
    • Subtracting Three-Digit Numbers Without Regrouping
    • Subtracting Two-Digit Numbers Without Regrouping (Example 1)
    • Subtracting Two-Digit Numbers Without Regrouping (Example 2)
    • Subtracting Whole Numbers
    • Subtracting with Regrouping
    • Subtracting: Regrouping from Zero
    • Subtracting: Regrouping Twice
    • Subtracting: Three-Digit Numbers and Basic Regrouping
    • Subtracting: Three-Digit Numbers and Regrouping
    • Subtraction 2
    • Subtraction 3: Introduction to Borrowing or Regrouping
    • Subtraction With Borrowing or Regrouping
    • Subtraction Word Problem
    • Subtraction Word Problem Within 10
    • Succeeding at the College Admissions Interview
    • Sum and Product of Irrational Numbers
    • Sum and Product of Rational Numbers
    • Sum of Consecutive Odd Integers
    • Sum of Functions
    • Sum of Interior Angles of a Polygon
    • Sum of Logarithms With Same Base
    • Sum of the exterior angles of convex polygon
    • Supermassive Black Holes
    • Supernova (Supernovae)
    • Supernova Clarification
    • Surface Area of a Box
    • Surface Area of a Box Using a Net
    • Suspensions, Colloids, and Solutions
    • Sutton Hoo Ship Burial
    • System of Inequalities Application
    • Systemic Thinking About Cancer
    • Systems and rate problems
    • Systems and rate problems 2
    • Systems and rate problems 3
    • systems of equations
    • Systems of Three Variables
    • Systems of Three Variables 2
    • Taking percentages
    • Tau versus Pi
    • Tax Deductions Introduction
    • Tax Lever of Fiscal Policy
    • Taxation and Dead Weight Loss
    • Taxes and Perfectly Elastic Demand
    • Taxes and Perfectly Inelastic Demand
    • Taxes for Factoring in Negative Externalities
    • Taxonomy and the Tree of Life
    • Teacher Leader: How I Got My Job and Where I’m Going
    • Teacher Leader: My Budget and Planning for the Future
    • Teacher Leader: What I Do and How Much I Make
    • Teens as Sums with 10
    • Telling Time (Example 1)
    • Telling Time (Example 2)
    • Telling Time Problems with Number Lines
    • Telling Time to the Nearest Minute (Unlabeled Clock)
    • Tempera Paint
    • Temperature Change Word Problem
    • Temple of Portunus, Rome
    • Tension (Part 2)
    • Tension in an Accelerating System and Pie in the Face
    • Term and Whole Life
    • Term and Whole Life Insurance Policies
    • Term Life Insurance and Death Probability
    • Terms Coefficients and Exponents in a Polynomial
    • Testing a Solution for a System of Equations
    • Testing Congruence Through Transformations (Example 1)
    • Testing Congruence Through Transformations (Example 2)
    • Testing if a relationship is a function
    • Testing Similarity Through Transformations
    • Testing Solutions for a System of Inequalities
    • Testing Solutions to Linear Equations
    • Testing Whether Area Is Proportional to Side Length
    • The Angle Game
    • The Beauty of Algebra
    • The Business Cycle
    • The Discount Rate
    • The Dot Product
    • The Golden Ratio
    • The Housing Price Conundrum
    • The Kidney and Nephron
    • The Lungs and Pulmonary System
    • The Mohorovicic Seismic Discontinuity
    • The Mole and Avogadro’s Number
    • The Pythagorean Theorem
    • The Rule of 72 for Compound Interest
    • The unit circle definition of trigonometric function
    • The Yield Curve
    • The Zeroth Power
    • Theodore Gericault, Raft of the Medusa
    • Thermodynamic Entropy Definition Clarification
    • Thermodynamics (Part 1)
    • Thermodynamics (Part 2)
    • Thermodynamics (Part 3)
    • Thermodynamics (Part 4)
    • Thermodynamics (Part 5)
    • Thiago Asks: How Much Time Does a Goalkeeper Have to React to a Penalty Kick?
    • Thinking About Probability
    • Thinking About Shapes of Distributions
    • Thinking About the Changing Values of Variables and Expressions
    • Thinking About the Sign of Expressions
    • Thomas Cole, The Oxbow
    • Thomas Couture, Romans of the Decadence
    • Thomas Malthus and Population Growth
    • Three Equation Application Problem
    • Three Points Defining a Circle
    • Thrombo-emboli and Thromboembolisms
    • Thutmose, Bust of Nefertiti
    • Time Conversions
    • Time Differences (Elapsed Time)
    • Time Differences 1
    • Time Differences in Different Time Zones
    • Time Value of Money
    • Time Word Problem: Puzzle
    • Time Word Problem: Susan’s Break
    • Time Word Problem: When to Leave to Get Home on Time
    • Tintoretto, The Finding of the Body of Saint Mark
    • Tintoretto, The Miracle of the Slave
    • Titian, Bacchus and Ariadne
    • Titian, Madonna of the Pesaro Family
    • Titian, Pieta
    • Titration Roundup
    • Total Consumer Surplus as Area
    • Total Displacement for Projectile
    • Total Final Velocity for Projectile
    • Total Internal Reflection
    • Total Revenue and Elasticity
    • Tour of Hadrian’s Villa, A
    • Tour Through Ancient Rome in 320 C.E., A
    • Traditional IRAs
    • Tragedy of the Commons
    • Trajan’s Forum
    • Transformation Matrix for Position Vector
    • Transitioning from Counting to Multiplying to Find Area
    • Translating Numerical Expressions with Parentheses
    • Translation on the Coordinate Plane
    • Treasury Bond Prices and Yields
    • Triangle Angle Example 1
    • Triangle Angle Example 2
    • Triangle Angle Example 3
    • Triangle Area Proofs
    • Triangle Medians and Centroids
    • Triangle Medians and Centroids (2D Proof)
    • Trig identities part 2
    • Trig identities part 3
    • Trigonometric Identities
    • Trigonometric System Example
    • Trigonometry Identity Review/Fun
    • Trigonometry word problems (part 1)
    • Trigonometry word problems (part 2)
    • Troll, Tolls and Systems of Equations
    • Tropomyosin and Troponin and their Role in Regulating Muscle Contraction
    • Two column proof showing segments are perpendicular
    • Two Passing Bicycles Word Problem
    • Two-Way Frequency Tables and Venn Diagrams
    • Two-Way Relative Frequency Tables
    • Type I and Type II Errors in Hypothesis Testing
    • Type I Errors in Hypothesis Testing
    • Types of College Loans
    • Types of Decay
    • Types of Grants and Scholarships
    • Types of Immune Responses: Innate and Adaptive. Humoral vs. Cell-Mediated
    • Types of Indifference Curves
    • U.S. Customary and Metric Units
    • U.S. Customary Units: Distance
    • U.S. Customary Units: Fluid Volume
    • U.S. Customary Units: Weight
    • Umbo (Otto Umbehr), The Roving Reporter
    • Understanding Calendar Notation
    • Understanding Division of Fractions
    • Understanding Exponents
    • Understanding Exponents 2
    • Understanding Fractions as Division
    • Understanding Liquid Volume (Capacity)
    • Understanding Logical Statements 1
    • Understanding Logical Statements 2
    • Understanding Logical Statements 3
    • Understanding Logical Statements 4
    • Understanding Logical Statements Commentary
    • Understanding Mass
    • Understanding Place Value when Adding Ones
    • Understanding Place Value when Adding Tens
    • Understanding Place Value when Subtracting Ones
    • Understanding Place Value when Subtracting Tens
    • Understanding Proportions
    • Understanding Slope
    • Understanding Square Roots
    • Unemployment
    • Unemployment Rate Primer
    • Unemployment Rate Primer (v2)
    • Unicorn in Captivity, The
    • Unit Circle Definition of Trig Functions
    • Unit Conversion
    • Unit Conversion Example: Drug Dosage
    • Unit Conversion With Fractions
    • Unit Conversion: Centimeters to Meters
    • Unit Conversion: Minutes to Hours
    • Unit Conversion: Ordering Metric Distances
    • Unit Measurement Word Problem: Distance (U.S. Customary)
    • Unit Vector Notation
    • Unit Vector Notation (Part 2)
    • Unit Vectors and Engineering Notation
    • Units of Measurement Word Problem: Volume (Metric)
    • Unknowns with Multiplication and Division
    • Upper Bound on Forward Settlement Price
    • US and Japanese Quantitative Easing
    • US History Overiew 2: Reconstruction to the Great Depression
    • US History Overview 1: Jamestown to the Civil War
    • US History Overview 3: WWII to Vietnam
    • Usain Bolt’s Average Speed
    • Use Cases for Credit Default Swaps
    • User Experience Researcher: How I Got My Job and Where I’m Going
    • User Experience Researcher: My Budget and Planning for the Future
    • User Experience Researcher: What I Do and How Much I Make
    • Using a Confidence Interval to Test for a Difference Between Proportions
    • Using a Protractor
    • Using Algebra to Find Measures of Angles Formed by a Transversal
    • Using Factors and Multiples to Figure Out Days of the Week
    • Using Fractions as Division to Create Mixed Numbers
    • Using Multiple Logarithm Properties to Simplify
    • Using Multiples of 10 to Calculate Quotients
    • Using Reserves to Stabilize Currency
    • Using Similar Triangles to Prove that Slope Is Constant for a Line
    • Using the Pythagorean Theorem
    • Using Trig Functions
    • Using Trig Functions Part II
    • Valance Electrons
    • Van Der Waals Forces
    • Vapor Pressure
    • Vapor Pressure Example
    • Variables and Expressions 1
    • Variables Expressions and Equations
    • Variation in a Species
    • Vasily Kandinsky, Improvisation 28 (Second Version)
    • Velocity of Money Rather Than Quantity Driving Prices
    • Verifying Hedge with Futures Margin Mechanics
    • Veterinarian: How I Got My Job and Where I’m Going
    • Veterinarian: My Budget and Planning for the Future
    • Veterinarian: What I Do and How Much I Make
    • Vi and Sal Explore How We Think About Scale
    • Vi and Sal Talk About the Mysteries of Benford’s Law
    • Vice President of Wealth Management: How I Got My Job and Where I’m Going
    • Vice President of Wealth Management: My Budget and Planning for the Future
    • Vice President of Wealth Management: What I Do and How Much I Make
    • Vietnam War
    • Viewing g as the Value of Earth’s Gravitational Field Near the Surface
    • Vincent van Gogh, Portrait of Joseph Roulin
    • Vincent van Gogh, Self-Portrait Dedicated to Paul Gauguin
    • Vincent van Gogh, The Bedroom
    • Virtual Image
    • Viruses
    • Visiting Campus
    • Visual Understanding of Centripetal Acceleration Formula
    • Visualizing Average Costs and Marginal Costs as Slope
    • Visualizing Equivalent Fractions
    • Visualizing Fraction Multiplication
    • Visualizing Vectors in 2 Dimensions
    • Visually Adding Fractions with Unlike Denominators
    • Visually Converting from Tenths to Hundredths
    • Visually Subtracting Fractions with Unlike Denominators
    • Vitamin C and the Limeys
    • Voltage
    • Volume Conversions (U.S. Customary)
    • Volume of a Composite Shape
    • Volume of a Cone
    • Volume of a Rectangular Prism or Box
    • Volume of a Rectangular Prism: Fractional Cubes
    • Volume of a Rectangular Prism: Fractional Dimensions
    • Volume of a Rectangular Prism: Word Problem
    • Volume of a Sphere
    • Volume Word Problem: Water Tank
    • Volunteer Coordinator: Boundaries and Self-Care in a Direct Service Career
    • Volunteer Coordinator: How I Got My Job and Where I’m Going
    • Volunteer Coordinator: My Budget and Planning for the Future
    • Volunteer Coordinator: What I Do and How Much I Make
    • Wassily Kandinsky, Composition VII
    • Ways to Add Two-Digit Numbers
    • Ways to Represent Data
    • Weak Acid Titration
    • Weaknesses of Fractional Reserve Lending
    • Wealth Destruction 1
    • Wealth Destruction 2
    • Weight Conversions (U.S. Customary & Metric)
    • Welder: How I Got My Job and Where I’m Going
    • Welder: My Budget and Planning for the Future
    • Welder: What I Do and How Much I Make
    • What Are Terms, Factors and Coefficients in Algebraic Expressions?
    • What Causes Precession and Other Orbital Changes
    • What Is a Function?
    • What is Inflation
    • What It Means to Buy a Company’s Stock
    • When Capitalism is Great and Not-so-great
    • When the Source and the Wave Move at the Same Velocity
    • White and Black Dwarfs
    • Who Can Succeed in College?
    • Whole Numbers as Fractions
    • Why Borrowing Works
    • Why Cepheids Pulsate
    • Why Current and Capital Accounts Net Out
    • Why Distance is Area under Velocity-Time Line
    • Why Europe is Worried About Greece
    • Why Gravity Gets So Strong Near Dense Objects
    • Why Is that Important?: Looking at Jackson Pollock
    • Why Lattice Multiplication Works
    • Why Look at Art?
    • Why Parties to Cartels Cheat
    • Why S-Waves Only Travel in Solids
    • William Dyce, Pegwell Bay, Kent
    • William Hogarth, Marriage A-la-Mode
    • William Holman Hunt, Our English Coasts (Strayed Sheep)
    • William Holman Hunt, The Awakening Conscience
    • Winslow Homer, The Fog Warning (Halibut Fishing)
    • Winslow Homer, The Life Line
    • Woodcuts and Etchings
    • Work and Energy (Part 2)
    • Work Done by Isothermic Process
    • Work from Expansion
    • Work/Energy Problem with Friction
    • Working During College
    • Would a Brick or a Feather Fall Faster
    • Writing a Strong College Admissions Essay
    • Writing an Equation for a Proportional Relationship
    • Writing and using inequalities
    • Writing and using inequalities 2
    • Writing and using inequalities 3
    • Writing Proportions
    • X and Y intercepts
    • X and Y intercepts 2
    • Yacht Captain: How I Got My Job and Where I’m Going
    • Yacht Captain: My Budget and Planning for the Future
    • Yacht Captain: What I Do and How Much I Make
  • Pixar

    200 Individual Titles
    • Animation: Introduction to Animation
    • Animation: Introduction to Animation: Bezier Curves
    • Animation: Introduction to Animation: Getting to Know Rob Jensen
    • Animation: Introduction to Animation: Linear Interpolation
    • Animation: Introduction to Animation: Math Meets Artistry
    • Animation: Introduction to Animation: Squash and Stretch
    • Animation: Introduction to Animation: Straight-Ahead Animation
    • Animation: Mathematics of Animation Curves
    • Animation: Mathematics of Animation Curves: De Casteljau’s Algorithm
    • Animation: Mathematics of Animation Curves: Mathematics of Linear Interpolation
    • Animation: Mathematics of Animation Curves: Repeated Linear Interpolation
    • Animation: Mathematics of Animation Curves: What Degree Are These Curves?
    • Art of Storytelling, The: Character
    • Art of Storytelling, The: Character: Advice to Storytellers
    • Art of Storytelling, The: Character: Character Arc
    • Art of Storytelling, The: Character: Character Development
    • Art of Storytelling, The: Character: Internal vs. External Features
    • Art of Storytelling, The: Character: Obstacles
    • Art of Storytelling, The: Character: Stakes
    • Art of Storytelling, The: Character: Wants vs. Needs
    • Art of Storytelling, The: Film Grammar
    • Art of Storytelling, The: Film Grammar: Advice for Storytellers
    • Art of Storytelling, The: Film Grammar: Basic Shot Types
    • Art of Storytelling, The: Film Grammar: Dynamic Shots
    • Art of Storytelling, The: Film Grammar: Major & Minor Beats
    • Art of Storytelling, The: Film Grammar: Storyboarding
    • Art of Storytelling, The: Story Structure
    • Art of Storytelling, The: Story Structure: Act 1
    • Art of Storytelling, The: Story Structure: Act 2
    • Art of Storytelling, The: Story Structure: Act 3
    • Art of Storytelling, The: Story Structure: Advice to Storytellers
    • Art of Storytelling, The: Story Structure: Introduction to Structure
    • Art of Storytelling, The: Story Structure: Story Spine
    • Art of Storytelling, The: Story Structure: Theme
    • Art of Storytelling, The: Visual Language
    • Art of Storytelling, The: Visual Language: Advice for Storytellers
    • Art of Storytelling, The: Visual Language: Color
    • Art of Storytelling, The: Visual Language: Introduction to Visual Language
    • Art of Storytelling, The: Visual Language: Line
    • Art of Storytelling, The: Visual Language: Motion
    • Art of Storytelling, The: Visual Language: Shape
    • Art of Storytelling, The: Visual Language: Space
    • Art of Storytelling, The: Visual Language: Tone
    • Art of Storytelling, The: We Are All Storytellers
    • Art of Storytelling, The: We Are All Storytellers: Advice for Storytellers
    • Art of Storytelling, The: We Are All Storytellers: Introduction to Storytelling
    • Art of Storytelling, The: We Are All Storytellers: What If?
    • Art of Storytelling, The: We Are All Storytellers: World & Character
    • Art of Storytelling, The: We Are All Storytellers: Your Favorite Stories
    • Art of Storytelling, The: We Are All Storytellers: Your Unique Perspective
    • Character Modeling: Mathematics of Subdivision
    • Character Modeling: Mathematics of Subdivision: Fun with Weights
    • Character Modeling: Mathematics of Subdivision: Weighted Average of Three Points
    • Character Modeling: Mathematics of Subdivision: Weighted Subdivision
    • Character Modeling: Modeling with Subdivision Surfaces
    • Character Modeling: Modeling with Subdivision Surfaces: Getting to Know Alonso Martinez
    • Character Modeling: Modeling with Subdivision Surfaces: Split vs. Average
    • Character Modeling: Modeling with Subdivision Surfaces: Subdivide Operation
    • Character Modeling: Modeling with Subdivision Surfaces: Subdividing Your Own Designs
    • Character Modeling: Modeling with Subdivision Surfaces: Subdivision in 3D
    • Character Modeling: Modeling with Subdivision Surfaces: What Is Character Modeling?
    • Color Science: Color Spaces
    • Color Science: Color Spaces: CIE Chromaticity Diagram
    • Color Science: Color Spaces: Color Grading
    • Color Science: Color Spaces: HSL Color Space
    • Color Science: Color Spaces: Introduction to Color Space
    • Color Science: Color Spaces: Introduction to Gamuts
    • Color Science: Introduction to Color
    • Color Science: Introduction to Color: Color Contrast
    • Color Science: Introduction to Color: Color Correction
    • Color Science: Introduction to Color: Getting to Know Dominic Glynn
    • Color Science: Introduction to Color: HSL Color Model
    • Color Science: Introduction to Color: RGB Color Model
    • Color Science: Introduction to Color: Spectrum of Light
    • Color Science: Introduction to Color: What Is Color?
    • Crowds: Building Crowds
    • Crowds: Building Crowds: Casting Challenge
    • Crowds: Building Crowds: Counting with Tables
    • Crowds: Building Crowds: Counting with Trees
    • Crowds: Building Crowds: Getting to Know Fran Kalal
    • Crowds: Building Crowds: Introduction to Combinatorics
    • Crowds: Building Crowds: Robot Combinations
    • Crowds: Building Crowds: Tree Challenge
    • Crowds: Counting Crowds
    • Crowds: Counting Crowds: Binomial Coefficient
    • Crowds: Counting Crowds: Calculating Factorials
    • Crowds: Counting Crowds: Casting Problem
    • Crowds: Counting Crowds: Does Order Matter?
    • Crowds: Counting Crowds: Snake Bots
    • Crowds: Counting Crowds: Two-Headed Robots
    • Effects: Introduction to Particle Systems
    • Effects: Introduction to Particle Systems: Create Water Surface Using Particles
    • Effects: Introduction to Particle Systems: Effects Overview
    • Effects: Introduction to Particle Systems: Getting to Know Matt Wong
    • Effects: Introduction to Particle Systems: Simulating Water
    • Effects: Introduction to Particle Systems: Smooth Collisions
    • Effects: Introduction to Particle Systems: Understanding Particle Systems
    • Effects: Introduction to Particle Systems: What Else Can You Make with Particle Systems?
    • Effects: The Physics of Particle Systems
    • Effects: The Physics of Particle Systems: Animating Particles
    • Effects: The Physics of Particle Systems: Force and Acceleration
    • Effects: The Physics of Particle Systems: Graphing Motion over Time
    • Effects: The Physics of Particle Systems: Particle Collisions
    • Effects: The Physics of Particle Systems: Understanding Net Forces
    • Effects: The Physics of Particle Systems: Vector Addition
    • Environment Modeling: Calculating Parabolas
    • Environment Modeling: Calculating Parabolas: Completing the Proof
    • Environment Modeling: Calculating Parabolas: Compute the Touching Point
    • Environment Modeling: Calculating Parabolas: How Can We Prove This?
    • Environment Modeling: Calculating Parabolas: Weighted Average of Two Points
    • Environment Modeling: Calculating Parabolas: Where Is the Touching Point?
    • Environment Modeling: Modeling Grass with Parabolas
    • Environment Modeling: Modeling Grass with Parabolas: Animating Grass
    • Environment Modeling: Modeling Grass with Parabolas: Getting to Know Tony DeRose
    • Environment Modeling: Modeling Grass with Parabolas: Introduction to Subdivision Surfaces
    • Environment Modeling: Modeling Grass with Parabolas: Midpoint Formula
    • Environment Modeling: Modeling Grass with Parabolas: Modeling Grass
    • Environment Modeling: Modeling Grass with Parabolas: Parabolic Arcs
    • Environment Modeling: Modeling Grass with Parabolas: String Art
    • Overview of Pixar in a Box
    • Patterns: Geometry of Dinosaur Skin
    • Patterns: Geometry of Dinosaur Skin: Distributing Sites Randomly
    • Patterns: Geometry of Dinosaur Skin: Getting to Know Ana
    • Patterns: Geometry of Dinosaur Skin: Getting to Know Beth
    • Patterns: Geometry of Dinosaur Skin: Introduction to Patterns
    • Patterns: Geometry of Dinosaur Skin: Modeling Dino Skin
    • Patterns: Geometry of Dinosaur Skin: Voronoi Partition
    • Patterns: Geometry of Dinosaur Skin: What Are Shading Packets?
    • Patterns: Painting with Randomness
    • Patterns: Painting with Randomness: Looking at Different Resolutions
    • Patterns: Painting with Randomness: One-Dimensional Noise
    • Patterns: Painting with Randomness: Painting Your Dino Skin
    • Patterns: Painting with Randomness: Perlin Noise (1D)
    • Patterns: Painting with Randomness: Perlin Noise (2D)
    • Rendering: Mathematics of Rendering
    • Rendering: Mathematics of Rendering: 3D Ray Tracing (Part 1)
    • Rendering: Mathematics of Rendering: 3D Ray Tracing (Part 2)
    • Rendering: Mathematics of Rendering: Calculate Intersection Point
    • Rendering: Mathematics of Rendering: Parametric Form of a Ray
    • Rendering: Mathematics of Rendering: Ray Tracing Intuition
    • Rendering: Mathematics of Rendering: Using the Line Equation
    • Rendering: Rendering 101
    • Rendering: Rendering 101: Getting to Know Susan Fong
    • Rendering: Rendering 101: Introduction to Rendering
    • Rendering: Rendering 101: Light Rays
    • Rendering: Rendering 101: Light Reflection
    • Rendering: Rendering 101: Rendering Mike Wazowski
    • Rendering: Rendering 101: What Is Ray Tracing?
    • Rigging: Code a Character
    • Rigging: Code a Character: Creating Objects
    • Rigging: Code a Character: Functions
    • Rigging: Code a Character: Putting Shapes Together
    • Rigging: Introduction to Rigging
    • Rigging: Introduction to Rigging: Getting to Know Brian Green
    • Rigging: Introduction to Rigging: Make a Face
    • Rigging: Introduction to Rigging: Putting Everything Together
    • Rigging: Introduction to Rigging: Rotation Deformers
    • Rigging: Introduction to Rigging: Scale Deformers
    • Rigging: Introduction to Rigging: Translation Deformers
    • Rigging: Introduction to Rigging: Welcome to Rigging
    • Sets & Staging: Geometric Transformations
    • Sets & Staging: Geometric Transformations : Introduction to Geometric Transformations
    • Sets & Staging: Geometric Transformations: Commutativity
    • Sets & Staging: Geometric Transformations: Composite Transformations
    • Sets & Staging: Geometric Transformations: Coordinate Plane
    • Sets & Staging: Geometric Transformations: Rotation
    • Sets & Staging: Geometric Transformations: Scaling
    • Sets & Staging: Geometric Transformations: Translation
    • Sets & Staging: Mathematics of Rotation
    • Sets & Staging: Mathematics of Rotation: Completing the Proof
    • Sets & Staging: Mathematics of Rotation: Geometry of Rotation
    • Sets & Staging: Mathematics of Rotation: How Do We Rotate Points?
    • Simulation: Code Your Own Hair Simulation
    • Simulation: Code Your Own Hair Simulation: 1D Spring-Mass System
    • Simulation: Code Your Own Hair Simulation: 2D Spring-Mass System
    • Simulation: Code Your Own Hair Simulation: Damping
    • Simulation: Code Your Own Hair Simulation: Multiple Spring-Mass System
    • Simulation: Code Your Own Hair Simulation: Starting with Particles
    • Simulation: Hair Simulation 101
    • Simulation: Hair Simulation 101: Adding Spring Stiffness and Damping
    • Simulation: Hair Simulation 101: Case Study - The Good Dinosaur
    • Simulation: Hair Simulation 101: Getting to Know Hayley Iben
    • Simulation: Hair Simulation 101: Modeling Hair
    • Simulation: Hair Simulation 101: Overview
    • Simulation: Hair Simulation 101: Support Springs
    • Simulation: Hair Simulation 101: Using a Spring-Mass System to Represent Hair
    • Virtual Cameras: How Virtual Cameras Work
    • Virtual Cameras: How Virtual Cameras Work: Camera Lenses
    • Virtual Cameras: How Virtual Cameras Work: Depth of Field
    • Virtual Cameras: How Virtual Cameras Work: Focal Distance
    • Virtual Cameras: How Virtual Cameras Work: Getting to Know Eben Ostby
    • Virtual Cameras: How Virtual Cameras Work: Introduction to Virtual Cameras
    • Virtual Cameras: How Virtual Cameras Work: Storytelling with the Camera
    • Virtual Cameras: How Virtual Cameras Work: What Is a Pinhole Camera?
    • Virtual Cameras: Mathematics of Depth of Field
    • Virtual Cameras: Mathematics of Depth of Field: Algebra of Focus
    • Virtual Cameras: Mathematics of Depth of Field: Mathematics of Pinhole Cameras
    • Virtual Cameras: Mathematics of Depth of Field: Out of Focus Objects
    • Virtual Cameras: Mathematics of Depth of Field: Simple Lens Law
    • Virtual Cameras: Mathematics of Depth of Field: Thin Lens Approximation