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Precalculus
The Precalculus course covers complex numbers; composite functions; trigonometric functions; vectors; matrice…
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Precalculus essentials
Explore advanced functions, trigonometry, complex numbers, vectors, matrices, conic sections, and series whil…
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SAT Math
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SAT Reading and Writing
Khan Academy offers the only official SAT Reading and Writing prep, in partnership with College Board. By mas…
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Social media literacy
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Statistics essentials
Learn high school statistics—scatterplots, two-way tables, normal distributions, binomial probability, and mo…
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Teacher resources (NGSS)
Make science meaningful in your classroom with Khan Academy's free unit guides and hands-on activities aligne…
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The J. Paul Getty Museum
The J. Paul Getty Museum seeks to inspire curiosity about, and enjoyment and understanding of, the visual art…
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Trigonometry
Explore the world of trigonometry by mastering right triangles and their applications, understanding and grap…
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US government and civics
Learn how the U.S. government works and how you can make a difference in your community and the country.
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US history
The United States of America is a nation with a rich history and a noble goal: government of the people, by t…
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Wireless Philosophy
Wi-Phi's mission is to introduce people to the practice of philosophy by offering lectures on philosophical i…