WhatBadgeNext?

Mean Topic Times

Shows the mean length of the vidoes in each topic.

The mean time for all the videos on Khan Academy is 8 min 31 sec.

Getting started with Khan Academy (2 min 3 sec)
Discoveries (2 min 10 sec)
Electromagnet (2 min 10 sec)
Estimating and rounding with decimals (2 min 13 sec)
Conceptualizing decimals and place notation (2 min 31 sec)
Rounding whole numbers (2 min 38 sec)
Converting between fractions and decimals (2 min 39 sec)
Understanding fractions (2 min 39 sec)
Art History: Rococo (3 min 6 sec)
Mixed number multiplication and division (3 min 13 sec)
Real and nominal return (3 min 15 sec)
Real and nominal return (3 min 15 sec)
Inflation scenarios (3 min 17 sec)
Mixed number addition and subtraction (3 min 19 sec)
Solving for a variable (3 min 23 sec)
Put and call options (3 min 23 sec)
Arithmetic properties (3 min 25 sec)
Arithmetic properties (3 min 25 sec)
Inflationary and deflationary scenarios (3 min 26 sec)
Deductive and inductive reasoning (3 min 27 sec)
Intro to Modern Cryptography (3 min 27 sec)
Art History: Minimalism (3 min 27 sec)
Chinese currency and U.S. debt (3 min 28 sec)
Spout (3 min 34 sec)
Three core financial statements (3 min 35 sec)
deflation (3 min 35 sec)
Forward and futures contracts (3 min 38 sec)
Deflation (3 min 39 sec)
Art History: 1700-1800 Age of Enlightenment (3 min 45 sec)
Adding and subtracting decimals (3 min 47 sec)
Art History: Romanticism in the United States (3 min 47 sec)
Intro to percentages (3 min 49 sec)
Evaluating expressions with unknown variables (3 min 49 sec)
Understanding company statements and capital structure (3 min 49 sec)
Accounting and financial statements (3 min 51 sec)
Dilution (3 min 51 sec)
Art History: Process Art (3 min 51 sec)
Depreciation and amortization (3 min 52 sec)
Thermodynamics (3 min 54 sec)
Variables and expressions (3 min 56 sec)
Journey into Cryptography (3 min 56 sec)
Place value (3 min 58 sec)
Interpreting data (3 min 58 sec)
Reading and interpreting data (3 min 58 sec)
What expressions express (4 min 1 sec)
Equations of parallel and perpendicular lines (4 min 1 sec)
Decimals (4 min 4 sec)
Mergers and acquisitions (4 min 4 sec)
Art History: Romanticism in Germany (4 min 5 sec)
Art History: Neo-Classicism (4 min 6 sec)
Multiplying and dividing fractions (4 min 9 sec)
Art History: France (4 min 9 sec)
The why of algebra (4 min 11 sec)
Art History: Venice (4 min 11 sec)
Biology (4 min 12 sec)
Art History: Romanticism in France (4 min 14 sec)
The distributive property (4 min 15 sec)
Cash versus accrual accounting (4 min 17 sec)
Art History: English Portraiture (4 min 17 sec)
The why of algebra (4 min 18 sec)
Interest rate swaps (4 min 19 sec)
Art History: Early Christian (4 min 19 sec)
Polynomial basics (4 min 20 sec)
Art History: Prehistoric (4 min 20 sec)
Art History: Symbolism (4 min 20 sec)
Options, swaps, futures, MBSs, CDOs and other derivatives (4 min 21 sec)
Art History: Romanticism in England (4 min 21 sec)
Art History: Anglo Saxon England (4 min 23 sec)
Graphing inequalities (4 min 24 sec)
Fractions (4 min 25 sec)
Multiplying decimals (4 min 26 sec)
Art History: Burgundy (4 min 26 sec)
Art History: Spain (4 min 26 sec)
Art History: Impressionism (4 min 26 sec)
Solving systems with elimination (4 min 27 sec)
Art History: Late Victorian (4 min 27 sec)
Multiplying monomials, binomials and polynomials in general (4 min 29 sec)
Art History: Postmodernism (4 min 29 sec)
Relationships and functions (4 min 31 sec)
New operator definitions (4 min 31 sec)
Art History: Flanders (4 min 31 sec)
Art History: 1800-1848 Industrial Revolution I (4 min 32 sec)
Federal reserve (central banks) (4 min 33 sec)
cryptography (4 min 35 sec)
Art History: 1848-1907 Industrial Revolution II (4 min 37 sec)
Art History: Realism (4 min 38 sec)
Solving systems with substitution (4 min 39 sec)
Natural logarithms (4 min 39 sec)
Art History: Northern Renaissance (4 min 40 sec)
Decimals and fractions (4 min 41 sec)
Least common multiple (4 min 42 sec)
Undefined and Indeterminate (4 min 42 sec)
Perimeter and area of non-standard shapes (4 min 43 sec)
Robots (4 min 43 sec)
American-Modernism (4 min 43 sec)
Inflation - measuring the cost of living (4 min 44 sec)
Art History: Art of the Americas (4 min 44 sec)
The coordinate plane (4 min 45 sec)
Art History: Second Empire (4 min 46 sec)
Art History: Pre-Raphaelites (4 min 48 sec)
Art History: The Postwar Figure (4 min 48 sec)
Solving equations examples and practice (4 min 50 sec)
Solving systems through examples (4 min 51 sec)
Quasars and galactive collisions (4 min 51 sec)
Mixed numbers and improper fractions (4 min 52 sec)
Volume (4 min 52 sec)
Exponent properties (4 min 53 sec)
Hedge funds (4 min 53 sec)
Art History: Post-Impressionism (4 min 53 sec)
Exponent expressions and equations (4 min 54 sec)
Polynomials (4 min 54 sec)
Projects (4 min 54 sec)
Applied math (4 min 55 sec)
Visualizing derivatives and antiderivatives (4 min 56 sec)
Vi Hart (4 min 57 sec)
Bit-zee Bot (4 min 59 sec)
Radical equations (5 min 1 sec)
Art History: Ancient Egypt (5 min 1 sec)
Art History: Florence (5 min 3 sec)
Art History: Venice (5 min 3 sec)
Taxes (5 min 8 sec)
Addition and subtraction word problems (5 min 9 sec)
DVD Player (5 min 9 sec)
Art History: 1600-1700 The Baroque (5 min 9 sec)
Adding and subtracting fractions (5 min 10 sec)
Age word problems (5 min 10 sec)
Art History: 1400-1500 Renaissance in Italy and the North (5 min 12 sec)
Complex numbers (5 min 14 sec)
Art History: Holland (5 min 14 sec)
Number sets (5 min 19 sec)
Measurement (5 min 20 sec)
Classroom case studies (5 min 20 sec)
Khan Academy resources (5 min 22 sec)
Limits and infinity (5 min 23 sec)
Art History: Florence (5 min 23 sec)
Art History (5 min 24 sec)
Art History: 400-1300 Medieval & Byzantine Eras (5 min 24 sec)
Art History: Italy (5 min 25 sec)
Integration by parts (5 min 26 sec)
Equivalent fractions (5 min 29 sec)
Radical radicals (5 min 29 sec)
Art History: Gothic (5 min 29 sec)
Absolute value (5 min 30 sec)
Arithmetic and pre-algebra (5 min 31 sec)
Prime factorization (5 min 32 sec)
MIT+K12 (5 min 32 sec)
Art History: 1960- Age of Post-Colonialism (5 min 32 sec)
Multiplying and dividing negative numbers (5 min 33 sec)
Rational expressions and equations (5 min 34 sec)
The demand curve (5 min 34 sec)
Leveraged buy-outs (5 min 35 sec)
Materials (5 min 35 sec)
Art History: Islamic Art (5 min 35 sec)
Dividing decimals (5 min 36 sec)
The imaginary unit i (5 min 37 sec)
The imaginary unit i (5 min 37 sec)
Isosceles and equilateral triangles (5 min 38 sec)
Art History: Flanders (5 min 40 sec)
Negative numbers and absolute value (5 min 41 sec)
Coordinate plane (5 min 41 sec)
Graphing linear inequalities (5 min 41 sec)
Product and quotient rules (5 min 41 sec)
Circumference and area of circles (5 min 42 sec)
Art History: 1500-1600 End of the Renaissance and the Reformation (5 min 42 sec)
Linear inequalities (5 min 43 sec)
Compound and absolute value inequalities (5 min 43 sec)
Direct and inverse variation (5 min 43 sec)
Art History: 1300-1400 Proto-Renaissance (5 min 43 sec)
Absolute value equations (5 min 44 sec)
Inequalities (5 min 44 sec)
Rational functions (5 min 45 sec)
Divisibility tests (5 min 47 sec)
Monetary and fiscal policy (5 min 47 sec)
Adding and subtracting negative numbers (5 min 48 sec)
Factors and multiples (5 min 49 sec)
Components of GDP (5 min 49 sec)
Art History: Romanesque (5 min 49 sec)
Complex numbers (5 min 50 sec)
Basic probability (5 min 50 sec)
Basic probability (5 min 50 sec)
Optimal angle for a projectile (5 min 50 sec)
Unit conversion (5 min 51 sec)
systems-overivew (5 min 51 sec)
U-substitution (5 min 51 sec)
Rates and ratios (5 min 52 sec)
Introduction to algebra (5 min 52 sec)
More analytic geometry (5 min 52 sec)
Triangle inequality theorem (5 min 52 sec)
Art History: Mannerism (5 min 53 sec)
Art History: Ancient Greece (5 min 54 sec)
Rates (5 min 55 sec)
Complex numbers (5 min 55 sec)
Graphs (5 min 55 sec)
Computational Number Theory (5 min 55 sec)
Ratios and proportions (5 min 56 sec)
Graphing solutions to equations (5 min 56 sec)
Graphing line using intercepts (5 min 57 sec)
Art History: - 400 C.E. Ancient Cultures (5 min 57 sec)
Art History: Dada (5 min 58 sec)
Quadrilaterals (5 min 59 sec)
Slow sock on Lubricon VI (5 min 59 sec)
Art History: Siena (5 min 59 sec)
Factoring quadratics (6 min)
Art History: Byzantine (6 min)
Linear equations (6 min 1 sec)
Domain and range (6 min 1 sec)
Domain and range (6 min 1 sec)
Price discrimination (6 min 1 sec)
Art History: Ancient Near East (6 min 1 sec)
Art History: 1907-1960 Age of Global Conflict (6 min 2 sec)
Factoring quadratics (6 min 3 sec)
LeBron asks (6 min 5 sec)
Angle basics and measurement (6 min 7 sec)
Physics (6 min 7 sec)
Humanities (6 min 7 sec)
Currency reserves (6 min 9 sec)
Art History: Expressionism (6 min 9 sec)
Measuring cost of living --inflation and the consumer price index (6 min 10 sec)
Negative number basics (6 min 11 sec)
Solving systems of equations (6 min 11 sec)
Stokes' theorem (6 min 11 sec)
Compound, independent events (6 min 12 sec)
Compound, independent events (6 min 12 sec)
Functions (6 min 13 sec)
Logarithms (6 min 13 sec)
Art History: Ancient Rome (6 min 13 sec)
CAHSEE Example Problems (6 min 13 sec)
The world of exponents (6 min 14 sec)
Art History: Performance Art (6 min 14 sec)
Systems of inequalities (6 min 15 sec)
Consumer and producer surplus (6 min 15 sec)
Art History: Tyrol (6 min 15 sec)
Art History: Cubism (6 min 16 sec)
Naming amines (6 min 17 sec)
Using Khan Academy in the classroom (6 min 17 sec)
Greatest common divisor (6 min 18 sec)
Taxes (6 min 18 sec)
Shell method (6 min 20 sec)
Graphing points, equations and inequalities (6 min 23 sec)
Systems of equations and inequalities (6 min 23 sec)
Dividing polynomials (6 min 24 sec)
Polynomials (6 min 24 sec)
Divergence theorem (3D) (6 min 24 sec)
Triangle angle properties (6 min 25 sec)
Prime numbers (6 min 26 sec)
Systems of equations and inequalities (6 min 26 sec)
Logarithm basics (6 min 27 sec)
Induction (6 min 27 sec)
Dependent events (6 min 27 sec)
Fundamental Theorem of Calculus (6 min 27 sec)
Dependent probability (6 min 27 sec)
Public goods and externalities (6 min 27 sec)
Logarithm properties (6 min 28 sec)
Dot structures (6 min 28 sec)
Naming alkenes (6 min 29 sec)
Foreign exchange and trade (6 min 29 sec)
Digital Camera (6 min 29 sec)
Percent word problems (6 min 30 sec)
Divisibility and factors (6 min 31 sec)
Color in organic molecules (6 min 31 sec)
Implicit differentiation (6 min 33 sec)
informationtheory (6 min 33 sec)
Journey into Information Theory (6 min 33 sec)
Algebra (6 min 34 sec)
Converting repeating decimals to fractions (6 min 34 sec)
Imaginary and complex numbers (6 min 40 sec)
More equation practice (6 min 42 sec)
Time scale of the cosmos (6 min 42 sec)
Graphing functions (6 min 43 sec)
Proof of Stokes' theorem (6 min 43 sec)
Real and nominal GDP (6 min 43 sec)
Hair Dryer (6 min 43 sec)
Divergence theorem proof (6 min 44 sec)
Thinking about solutions to systems (6 min 45 sec)
Slope (6 min 45 sec)
Introduction to functions (6 min 46 sec)
Angles between intersecting and parallel lines (6 min 46 sec)
Art History: Architecture (6 min 46 sec)
Fancier systems (6 min 47 sec)
Fancier systems (6 min 47 sec)
Limits (6 min 48 sec)
Simplifying complicated equations (6 min 49 sec)
Systems of inequalities (6 min 50 sec)
Permutations and combinations (6 min 50 sec)
Permutations and combinations (6 min 50 sec)
Slope (6 min 52 sec)
Perimeter, area and volume (6 min 52 sec)
Mutual funds (6 min 54 sec)
Divergence theorem (6 min 55 sec)
Art History: Neue Sachlichkeit (6 min 55 sec)
Equation examples for beginners (6 min 56 sec)
Angles and intersecting lines (6 min 56 sec)
Healthy Lifestyle (6 min 56 sec)
Bonds (6 min 57 sec)
Radians (6 min 58 sec)
Inflation (6 min 58 sec)
Introduction to functions (6 min 59 sec)
Thiols and sulfides (6 min 59 sec)
Reverse Engineering (6 min 59 sec)
Collateralized debt obligations (7 min)
Art History: Buddhist Art (7 min)
GDP - measuring national income (7 min 1 sec)
Average costs (ATC, MC) and marginal revenue (MR) (7 min 2 sec)
Angles (7 min 3 sec)
Current and capital accounts (7 min 3 sec)
Logarithmic functions (7 min 4 sec)
Power rule (7 min 4 sec)
Measures of central tendency (7 min 4 sec)
Exponents, radicals, and scientific notation (7 min 6 sec)
Monopolies (7 min 6 sec)
Historical circumstances explained by AD/AS (7 min 6 sec)
Disc method (7 min 7 sec)
Seismic waves and how we know Earth's structure (7 min 7 sec)
Naming carboxylic acids (7 min 8 sec)
Credit default swaps (7 min 8 sec)
Macroeconomics (7 min 11 sec)
Probability and combinatorics (7 min 12 sec)
Mortgage-backed securities (7 min 12 sec)
Consumer and producer surplus (7 min 12 sec)
Multiplication and division (7 min 13 sec)
Congruent triangles (7 min 13 sec)
The quadratic formula (quadratic equation) (7 min 14 sec)
randomized algorithms (7 min 14 sec)
Systems of equations word problems (7 min 15 sec)
Sequences and induction (7 min 15 sec)
Riemann sums and definite integration (7 min 16 sec)
Art History: High Renaissance (7 min 17 sec)
Significant figures (7 min 18 sec)
Special right triangles (7 min 18 sec)
Basic trigonometric ratios (7 min 18 sec)
Yoga plans (7 min 19 sec)
Super Yoga plans (7 min 19 sec)
Taking derivatives (7 min 19 sec)
Indefinite integral as anti-derivative (7 min 19 sec)
Solid of revolution (7 min 19 sec)
Hypertension (7 min 19 sec)
Rational expressions (7 min 23 sec)
L'Hôpital's Rule (7 min 24 sec)
Integral calculus (7 min 24 sec)
Balanced and unbalanced forces (7 min 24 sec)
The supply curve (7 min 24 sec)
IS-LM Model (7 min 24 sec)
Investment vehicles (7 min 28 sec)
Completing the square (7 min 29 sec)
Newton's laws of motion (7 min 29 sec)
Naming and preparing alkynes (7 min 29 sec)
Equation of a line (7 min 30 sec)
Coach resources (7 min 30 sec)
Multi-digit multiplication (7 min 32 sec)
Simplifying rational expressions (7 min 32 sec)
Perimeter and area (7 min 32 sec)
Functions and their graphs (7 min 32 sec)
Simplifying rational expressions (7 min 32 sec)
Types of regions in three dimensions (7 min 33 sec)
Angle bisectors (7 min 36 sec)
Art History: Romanticism in Spain (7 min 36 sec)
Independent and dependent events (7 min 37 sec)
Ancient and Medieval History (7 min 37 sec)
Life (and death) of stars (7 min 38 sec)
Function inverses (7 min 39 sec)
Function inverses (7 min 39 sec)
Centripetal acceleration (7 min 40 sec)
Stellar parallax (7 min 40 sec)
Order of operations (7 min 41 sec)
Projectile Launcher (7 min 41 sec)
Challenging complex number problem (7 min 43 sec)
Calculus AB example questions (7 min 43 sec)
Supply, demand and market equilibrium (7 min 45 sec)
Art History: The Basics (7 min 45 sec)
Overview and history of algebra (7 min 46 sec)
Ratios with algebra (7 min 46 sec)
Triangles (7 min 47 sec)
Lattice multiplication (7 min 48 sec)
AP Calculus practice questions (7 min 49 sec)
Probability and combinatorics (7 min 49 sec)
Two digit addition and subtraction (7 min 50 sec)
Math (7 min 51 sec)
Equation of a line (7 min 51 sec)
Homogeneous equations (7 min 51 sec)
Fractional reserve banking (7 min 51 sec)
Heart Disease and Stroke (7 min 51 sec)
Quadratics (7 min 52 sec)
Geometry (7 min 54 sec)
Calculus BC sample questions (7 min 54 sec)
GDP and the circular flow of income and expenditures (7 min 55 sec)
Consumer price index (7 min 56 sec)
Nash equilibrium (7 min 56 sec)
Trigonometry and precalculus (7 min 57 sec)
Perfect and imperfect competition (7 min 57 sec)
Koch snowflake fractal (7 min 58 sec)
Chain rule (8 min 1 sec)
Arterial Stiffness (8 min 1 sec)
Acceleration (8 min 2 sec)
Fractional reserve accounting (8 min 3 sec)
Computer science (8 min 4 sec)
Polynomial and rational functions (8 min 5 sec)
Descriptive statistics (8 min 5 sec)
Intro to addition and subtraction (8 min 7 sec)
Flux in 3-D and constructing unit normal vectors to surface (8 min 7 sec)
Life in the Universe (8 min 7 sec)
Economic profit and opportunity cost (8 min 8 sec)
Unit circle (8 min 9 sec)
Variance and standard deviation (8 min 9 sec)
Midpoint and distance (8 min 10 sec)
Partial quotient division (8 min 11 sec)
Probability using combinatorics (8 min 12 sec)
Probability using combinatorics (8 min 12 sec)
Compound interest basics (8 min 12 sec)
Altitudes (8 min 13 sec)
Forces and Newton's Laws of Motion (8 min 13 sec)
Exponential and logarithmic functions (8 min 14 sec)
Basic Trigonometry (8 min 15 sec)
Cepheid variables (8 min 15 sec)
Life and death of stars (8 min 16 sec)
Nomenclature of aldehydes and ketones (8 min 16 sec)
Sal's old angle videos (8 min 17 sec)
Finance and capital markets (8 min 17 sec)
Hyperbolic trig functions (8 min 18 sec)
Intro to hyperbolic trigonometric functions (8 min 18 sec)
Microeconomics (8 min 19 sec)
Art History: Introduction to Art History (8 min 19 sec)
Circles (8 min 20 sec)
Linear homogeneous equations (8 min 20 sec)
Deadweight loss (8 min 20 sec)
Endocrinology and Diabetes (8 min 21 sec)
Aggregate demand and aggregate supply (8 min 22 sec)
Old school equations with Sal (8 min 24 sec)
The monetary system (8 min 24 sec)
Cervical Spine (8 min 24 sec)
Exponential growth and decay (8 min 25 sec)
Right triangles (8 min 26 sec)
Limits (8 min 27 sec)
Inclined planes and friction (8 min 27 sec)
Rates of change (8 min 28 sec)
Art History: Pop Art (8 min 29 sec)
Solid of revolution (8 min 30 sec)
Addition and subtraction (8 min 31 sec)
Calculus (8 min 31 sec)
Greek Debt Crisis (8 min 31 sec)
Life insurance (8 min 32 sec)
The firm and economic profit (8 min 33 sec)
Blood Pressure (8 min 33 sec)
Epsilon delta definition of limits (8 min 35 sec)
Bringing it all together (8 min 39 sec)
Earth geological and climatic history (8 min 39 sec)
Plate tectonics (8 min 39 sec)
Reactions of alcohols (8 min 40 sec)
Consumption function (8 min 41 sec)
Income and expenditure - Keynesian cross and IS-LM model (8 min 43 sec)
Displacement, velocity and time (8 min 44 sec)
Housing price conundrum (8 min 44 sec)
Interest as the price of money (8 min 44 sec)
Definite integrals (8 min 46 sec)
Tree of life (8 min 46 sec)
Surface integrals and Stokes' theorem (8 min 47 sec)
SAT Preparation (8 min 47 sec)
Separable equations (8 min 48 sec)
Method of undetermined coefficients (8 min 48 sec)
Alkyne reactions (8 min 49 sec)
Trig identities (8 min 51 sec)
Impacts and linear momentum (8 min 51 sec)
Momentum (8 min 51 sec)
Between perfect competition and monopoly (8 min 52 sec)
Addition with carrying (8 min 53 sec)
Analyzing functions (8 min 53 sec)
Laplace transform (8 min 53 sec)
Shorting stock (8 min 54 sec)
Exponent properties (8 min 56 sec)
Graphs of trig functions (8 min 56 sec)
Maclaurin and Taylor series (8 min 56 sec)
Current Economics (8 min 56 sec)
Unemployment (8 min 56 sec)
Cosmology and astronomy (8 min 57 sec)
Interest basics (8 min 58 sec)
Derivatives of common functions (8 min 59 sec)
Naming alkanes (8 min 59 sec)
Aggregate demand and aggregate supply (9 min)
Optimization with calculus (9 min 1 sec)
Corporate structure and taxation (9 min 1 sec)
Hypothesis testing with one sample (9 min 3 sec)
Investment and consumption (9 min 3 sec)
Elasticity (9 min 3 sec)
Price elasticity (9 min 3 sec)
Production possibilities frontier (9 min 3 sec)
Circles (9 min 4 sec)
Special properties and parts of triangles (9 min 4 sec)
Circles (9 min 4 sec)
Aldehydes and ketones (9 min 4 sec)
Scientific notation (9 min 7 sec)
Introduction to differential calculus (9 min 7 sec)
Game theory and Nash equilibrium (9 min 7 sec)
Mechanical advantage (9 min 8 sec)
Polar coordinates (9 min 9 sec)
Old videos on projectile motion (9 min 10 sec)
Measuring age on Earth (9 min 10 sec)
Two-dimensional motion (9 min 11 sec)
Fluids (9 min 11 sec)
Amines (9 min 11 sec)
Inflation and unemployment (9 min 12 sec)
Triangle similarity (9 min 13 sec)
Waves and optics (9 min 13 sec)
Art History: Media (9 min 13 sec)
Second order differential equations (9 min 15 sec)
Heron's formula (9 min 16 sec)
Random variables and probability distributions (9 min 17 sec)
History of life on Earth (9 min 18 sec)
Multiplication fun (9 min 20 sec)
Similarity (9 min 20 sec)
Formal understanding of congruency (9 min 21 sec)
Present value (9 min 21 sec)
Choices, opportunity cost and happiness (9 min 23 sec)
Points, lines, and planes (9 min 25 sec)
Introduction to Euclidean geometry (9 min 25 sec)
Continuous compounding and e (9 min 25 sec)
Inverse trig functions (9 min 27 sec)
Labor and marginal product revenue (9 min 27 sec)
Marginal propensity to consume (MPC) (9 min 27 sec)
Probability and statistics (9 min 30 sec)
Home equity and personal balance sheets (9 min 31 sec)
Life on Earth and in the Universe (9 min 32 sec)
Aromatic compounds (9 min 32 sec)
Pythagorean theorem proofs (9 min 33 sec)
Normal force (9 min 33 sec)
Earth's rotation and tilt (9 min 33 sec)
Marginal utility and budget lines (9 min 33 sec)
Science & Economics (9 min 34 sec)
Double integrals (9 min 35 sec)
Interest (9 min 35 sec)
SN1/SN2/E1/E2 (9 min 36 sec)
Aromatic compounds (9 min 36 sec)
Comparative advantage and gains from trade (9 min 36 sec)
American Civics (9 min 37 sec)
Inverting matrices (9 min 38 sec)
Work and energy (9 min 38 sec)
Reactions of benzene (9 min 38 sec)
Continuous compound interest and e (9 min 38 sec)
Credit Crisis (9 min 38 sec)
One-dimensional motion (9 min 39 sec)
Alkene nomenclature (9 min 39 sec)
Stock basics (9 min 39 sec)
Derivative applications (9 min 40 sec)
Nerve Regulation of the Heart (9 min 40 sec)
graphing quadratics (9 min 41 sec)
Market equilibrium (9 min 41 sec)
Vision for the classroom (9 min 41 sec)
Sequences, series and function approximation (9 min 42 sec)
Old school probability (9 min 42 sec)
Scale of earth, sun, galaxy and universe (9 min 42 sec)
Double and triple integrals (9 min 43 sec)
Old school similarity (9 min 44 sec)
Gravitation (9 min 44 sec)
Newton's law of gravitation (9 min 44 sec)
Money, banking and central banks (9 min 45 sec)
Quadratic inequalities (9 min 49 sec)
Quadratic inequalities (9 min 49 sec)
Synthesis and cleavage of ethers (9 min 49 sec)
Work and energy (9 min 50 sec)
Blood Vessel Diseases (9 min 50 sec)
Loooong division! (9 min 51 sec)
Oscillatory motion (9 min 51 sec)
Harmonic motion (9 min 51 sec)
First order differential equations (9 min 52 sec)
Reactions of ketones (9 min 52 sec)
Alcohol nomenclature and properties (9 min 53 sec)
Medians and centroids (9 min 54 sec)
Springs and Hooke's Law (9 min 54 sec)
Scale of the universe (9 min 54 sec)
Sequences and series review (9 min 55 sec)
Exact equations and integrating factors (9 min 56 sec)
Triple integrals (9 min 57 sec)
Regression (9 min 57 sec)
Linear regression and correlation (9 min 57 sec)
Interest on credit cards and loans (9 min 58 sec)
Introduction to economics (9 min 59 sec)
Introduction to economics (9 min 59 sec)
Tension (10 min 2 sec)
The Heart (10 min 2 sec)
Curl (10 min 3 sec)
Light and fundamental forces (10 min 3 sec)
Chirality and the R,S system (10 min 3 sec)
Position vector functions and derivatives (10 min 4 sec)
Optical activity (10 min 4 sec)
Addition reactions of conjugated dienes (10 min 4 sec)
Money supply (10 min 4 sec)
Colon Disease (10 min 4 sec)
Lab Values and Concentrations (10 min 5 sec)
Bernoulli distributions and margin of error (10 min 6 sec)
Perpendicular bisectors (10 min 7 sec)
Alkenes and alkynes (10 min 7 sec)
Test Prep (10 min 8 sec)
Keynesian thinking (10 min 9 sec)
Functional groups (10 min 10 sec)
Pythagorean theorem (10 min 11 sec)
Currency (10 min 11 sec)
Conics in the IIT JEE (10 min 13 sec)
Subtraction with borrowing (regrouping) (10 min 14 sec)
Big bang and expansion of the universe (10 min 15 sec)
Alcohols, ethers, epoxides, sulfides (10 min 15 sec)
Old limits tutorial (10 min 16 sec)
Perfect competition (10 min 17 sec)
Gradient (10 min 19 sec)
Carboxylic acids and derivatives (10 min 19 sec)
Why parties in a cartel will cheat (10 min 19 sec)
Sequences and series (10 min 22 sec)
Venn diagrams and the addition rule (10 min 22 sec)
Venn diagrams and adding probabilities (10 min 22 sec)
Complex and repeated roots of characteristic equation (10 min 22 sec)
Delightful division (10 min 23 sec)
Analysis of variance (10 min 24 sec)
Derivatives in multi-dimensions and for vectors (10 min 26 sec)
Nomenclature and preparation of epoxides (10 min 26 sec)
Limits (10 min 27 sec)
Limits (10 min 27 sec)
Miscellaneous (10 min 27 sec)
Healthcare and medicine (10 min 29 sec)
Hybrid orbitals (10 min 30 sec)
Keynesian Cross (10 min 30 sec)
Physics (10 min 31 sec)
Humanity on Earth (10 min 31 sec)
GMAT: Problem Solving (10 min 31 sec)
Percent word problems (10 min 33 sec)
Diastereomers and meso compounds (10 min 34 sec)
Elimination reactions (10 min 34 sec)
Housing (10 min 34 sec)
Sal's old Maclaurin and Taylor series tutorial (10 min 35 sec)
SN1 and SN2 (10 min 35 sec)
Ring-opening reactions of epoxides (10 min 35 sec)
Parametric equations and polar coordinates (10 min 36 sec)
Heredity and genetics (10 min 36 sec)
GMAT (10 min 36 sec)
IIT JEE Questions (10 min 37 sec)
Completing the square and the quadratic formula (10 min 38 sec)
Ideal gas laws (10 min 38 sec)
Divergence (10 min 40 sec)
Trig identities and examples (10 min 41 sec)
GMAT Data Sufficiency (10 min 41 sec)
Surface integrals (10 min 42 sec)
Organic chemistry (10 min 43 sec)
Matrices (10 min 44 sec)
E1 and E2 reactions (10 min 45 sec)
Nomenclature and properties of ethers (10 min 45 sec)
Partial derivatives (10 min 48 sec)
Long live Tau (10 min 49 sec)
Introduction to derivatives (10 min 50 sec)
Electricity and magnetism (10 min 50 sec)
Stereochemistry (10 min 50 sec)
Substitution and elimination reactions (10 min 51 sec)
Quadratic odds and ends (10 min 54 sec)
Two-dimensional projectile motion (10 min 54 sec)
Influenza (10 min 54 sec)
Naming alkanes, cycloalkanes, and bicyclic compounds (10 min 57 sec)
Competition Math (10 min 57 sec)
Conic section basics (10 min 58 sec)
Conic section basics (10 min 58 sec)
Alkanes and cycloalkanes (10 min 58 sec)
Intro to complex analysis (11 min)
Heart Muscle Contraction (11 min)
SN1/SN2/E1/E2 (11 min 2 sec)
France's many revolutions and republics (11 min 3 sec)
Random variables and probability distributions (11 min 4 sec)
Conjugation, Diels-Alder, and MO theory (11 min 4 sec)
Hypothesis testing with two samples (11 min 5 sec)
Brain teasers (11 min 5 sec)
Moments, torque and angular momentum (11 min 6 sec)
Torque, moments and angular momentum (11 min 6 sec)
Amines in reactions (11 min 7 sec)
Differential equations (11 min 11 sec)
SN1 vs SN2 (11 min 12 sec)
Worked examples: geometry (11 min 13 sec)
Trig substitution (11 min 13 sec)
Kinematic formulas and projectile motion (11 min 14 sec)
The business cycle (11 min 16 sec)
Household (11 min 16 sec)
Super fast systems of equations (11 min 18 sec)
California Standards Test: Algebra II (11 min 20 sec)
Renting vs. buying a home (11 min 22 sec)
Paulson Bailout (11 min 22 sec)
2008 Bank bailout (11 min 22 sec)
Pressure Volume Loops (11 min 24 sec)
California Standards Test (11 min 24 sec)
Identifying conics from equations (11 min 26 sec)
Conics from equations (11 min 26 sec)
2-D Divergence theorem (11 min 26 sec)
Eigen-everything (11 min 26 sec)
New Topic (11 min 26 sec)
California Standards Test: Algebra I (11 min 26 sec)
Changing the PV Loop (11 min 27 sec)
California Standards Test: Geometry (11 min 28 sec)
Alkene reactions (11 min 29 sec)
Fetal Circulation (11 min 30 sec)
General chemistry review (11 min 34 sec)
Critical points and graphing with calculus (11 min 35 sec)
Formation of carboxylic acid derivatives (11 min 35 sec)
Preload and Afterload (11 min 37 sec)
Solving and graphing quadratics (11 min 39 sec)
Inferential statistics (11 min 40 sec)
Paritial fraction expansion (11 min 41 sec)
Partial fraction expansion (11 min 41 sec)
Parametric equations (11 min 42 sec)
Radioactive decay (11 min 43 sec)
Introduction to stocks (11 min 43 sec)
What drives oil prices (11 min 47 sec)
Blood Pressure Control (11 min 47 sec)
Conic sections (11 min 49 sec)
Synthesis using alkynes (11 min 49 sec)
Banking and Money (11 min 49 sec)
Basic matrix operations (11 min 51 sec)
Poisson process (11 min 51 sec)
Chirality and absolute configuration (11 min 56 sec)
Average fixed, variable and marginal costs (11 min 57 sec)
Acid/base (11 min 59 sec)
More trig examples (12 min 2 sec)
Sal's old statistics videos (12 min 5 sec)
Molecular orbital theory (12 min 6 sec)
Scale of the small and large (12 min 8 sec)
Life of a company--from birth to death (12 min 12 sec)
Capacity utilization and inflation (12 min 14 sec)
The Lungs (12 min 15 sec)
Chemical reactions (stoichiometry) (12 min 17 sec)
Line integrals and Green's theorem (12 min 19 sec)
More determinant depth (12 min 19 sec)
Alkene reactions (12 min 19 sec)
Perimeter, circumference and area basics (12 min 20 sec)
Organic structures (12 min 20 sec)
Hyperbolas (12 min 21 sec)
Hyperbolas (12 min 21 sec)
Diels-alder reaction (12 min 21 sec)
Conformations of alkanes and cycloalkanes (12 min 23 sec)
Health Care System (12 min 23 sec)
Synthesis of alcohols (12 min 26 sec)
Reduced row echelon form (12 min 29 sec)
Solving systems by elimination (12 min 29 sec)
Bond-line structures (12 min 29 sec)
Finding inverses of matrices (12 min 32 sec)
Conic sections (12 min 34 sec)
Oxidation and reduction (12 min 39 sec)
Corporate bankruptcy (12 min 42 sec)
Intro to differential equations (12 min 43 sec)
Sampling distribution (12 min 44 sec)
Line integrals in vector fields (12 min 46 sec)
Orbitals and Electrons (12 min 46 sec)
Geithner Plan (12 min 46 sec)
Squeeze theorem (12 min 51 sec)
Valuation and Investing (12 min 51 sec)
Green's theorem (12 min 52 sec)
Binomial distribution (12 min 53 sec)
States of matter (12 min 54 sec)
Electronegativity and polarity (12 min 55 sec)
Binomial theorem (12 min 58 sec)
Formal charge and resonance (13 min)
Chemistry (13 min 1 sec)
Reaction rates (13 min 2 sec)
Pythagorean theorem (13 min 3 sec)
Blood (13 min 9 sec)
Conformations (13 min 10 sec)
Transpose of a matrix (13 min 15 sec)
Chi-square probability distribution (13 min 16 sec)
Laplace transform (13 min 16 sec)
Retirement accounts: IRAs and 401ks (13 min 16 sec)
Immunology (13 min 19 sec)
Nucleophilicity and basicity (13 min 21 sec)
Personal bankruptcy (13 min 22 sec)
Graphing rational functions (13 min 39 sec)
Asymptotes and graphing rational functions (13 min 39 sec)
Line integrals for scalar functions (13 min 40 sec)
Normal distribution (13 min 41 sec)
Periodic table, trends, and bonding (13 min 41 sec)
Singapore Math (13 min 43 sec)
Free radical reaction (13 min 45 sec)
Transformations and matrix multiplication (13 min 47 sec)
Biology (13 min 48 sec)
Fischer projections (13 min 52 sec)
Transformations (13 min 54 sec)
Properties of the Laplace transform (13 min 56 sec)
Linear transformation examples (13 min 56 sec)
Human biology (13 min 57 sec)
Cellular respiration (14 min)
Ellipses (14 min 1 sec)
Ellipses (14 min 1 sec)
Oxidation reduction (14 min 4 sec)
Matrix multiplication (14 min 8 sec)
Acids and bases (14 min 20 sec)
History (14 min 24 sec)
Thermodynamics (14 min 26 sec)
United States History (14 min 26 sec)
Functions and linear transformations (14 min 33 sec)
Confident intervals (14 min 36 sec)
Linear algebra (14 min 52 sec)
Laplace transform to solve a differential equation (14 min 54 sec)
Alternate coordinate systems (bases) (14 min 57 sec)
Orthogonal projections (14 min 57 sec)
Orthonormal basis (14 min 57 sec)
The convolution integral (14 min 59 sec)
Khan Academy-Related Talks and Interviews (15 min 14 sec)
Photosynthesis (15 min 18 sec)
Hybridization (15 min 18 sec)
Vector dot and cross products (15 min 19 sec)
Null space and column space (15 min 19 sec)
Napoleon Bonaparte (16 min 9 sec)
Orthogonal complements (16 min 10 sec)
Vectors and spaces (16 min 14 sec)
Inverse functions and transformations (16 min 26 sec)
Parabolas (16 min 29 sec)
Parabolas (16 min 29 sec)
Evolution and natural selection (16 min 36 sec)
Linear dependence and independent (16 min 45 sec)
Mean value theorem (16 min 48 sec)
Mortgages (16 min 53 sec)
European History (17 min 6 sec)
Introduction to the Atom (17 min 7 sec)
Change of basis (17 min 13 sec)
More mathy functions (17 min 27 sec)
Parametrizing a surface (17 min 47 sec)
French Revolution (18 min 3 sec)
Cell division (19 min 40 sec)
Linear combinations and spans (20 min 35 sec)
Subspaces and the basis for a subspace (21 min 14 sec)
Haitian Revolution (22 min 4 sec)
Vectors (22 min 16 sec)
Teacher chats (58 min 5 sec)