The Khan Academy is a non-profit educational organization created in 2006 by Sal Khan, a graduate of MIT and Harvard Business School. Its mission is to provide free, world-class education for anyone, anywhere.
All Lessons by Khan Academy
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7 minFREEBiology lessonFree4 CQ
Cells are the basic units plants and animals are made from, but how do they do what they do? Learn the basics in this biology lesson from Khan Academy.
with Khan AcademyCells are the basic units plants and animals are made from, but how do they do what they do? Learn the basics in this biology lesson from Khan Academy.
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11 minFREEStatistics lessonFree6 CQ
Learn about the game theory problem known as the Prisoner's Dilemma with concrete, step-by-step illustrations, including an explanation of the Nash equilibrium.
with Khan AcademyLearn about the game theory problem known as the Prisoner's Dilemma with concrete, step-by-step illustrations, including an explanation of the Nash equilibrium.
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5 minFREEAlgebra lessonFree3 CQ
If your knowledge of mathematical inequalities is less than 1, but your desire to learn is greater than zero, this lesson from Khan Academy is for you!
with Khan AcademyIf your knowledge of mathematical inequalities is less than 1, but your desire to learn is greater than zero, this lesson from Khan Academy is for you!
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13 minFREEBiology lessonFree7 CQ
Endoplasmic Reticulum isn’t just fun to say, its also an important organelle of the cell. Learn about the E.R. and more in this lesson from Khan Academy.
with Khan AcademyEndoplasmic Reticulum isn’t just fun to say, its also an important organelle of the cell. Learn about the E.R. and more in this lesson from Khan Academy.
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11 minFREEEconomics lessonFree6 CQ
Think competition between two companies can’t be mutually beneficial? In this lesson from Khan Academy, learn how and why duopolistic competition works!
with Khan AcademyThink competition between two companies can’t be mutually beneficial? In this lesson from Khan Academy, learn how and why duopolistic competition works!
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8 minFREEChemistry lessonFree5 CQ
Balancing chemical equations is a requirement of any chemistry class—so learn how, using addition, multiplication, and substitution, in this lesson from Khan Academy.
with Khan AcademyBalancing chemical equations is a requirement of any chemistry class—so learn how, using addition, multiplication, and substitution, in this lesson from Khan Academy.
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18 minFREEUS History lessonFree10 CQ
Learn about the major events that shaped early US history - from the time of the earliest permanent English settlement at Jamestown to the Civil War.
with Khan AcademyLearn about the major events that shaped early US history - from the time of the earliest permanent English settlement at Jamestown to the Civil War.
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6 minFREEMath lessonFree4 CQ
Cool math tricks for basic addition! Learn how to add using the number line and other visual tools.
with Khan AcademyCool math tricks for basic addition! Learn how to add using the number line and other visual tools.
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6 minFREEPsychology lessonFree4 CQ
Exercise your brain, use your critical thinking skills, and improve your intellectual acuity with this classic brain teaser presented to you by Khan Academy.
with Khan AcademyExercise your brain, use your critical thinking skills, and improve your intellectual acuity with this classic brain teaser presented to you by Khan Academy.