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Learn using videos, interactive exercises, and in-depth articles inmath (arithmetic, pre-algebra, algebra, geometry, trigonometry,statistics, calculus, linear algebra), science (biology, chemistry,physics), economics, and even the humanities with playlists on arthistory, civics, finance, and more.
Spend an afternoon brushing up on statistics. Discover how theKrebs cycle works. Learn about the fundamentals of music notation.Prepare for the upcoming SAT, GMAT, or MCAT. Or, if you’re feelingparticularly adventurous, learn how fire stick farming changed thelandscape of Australia.
It doesn’t matter if you are a student, teacher, home-schooler,principal, adult returning to the classroom after 20 years, or afriendly alien just trying to get a leg up in earthly biology—KhanAcademy’s materials and resources are available to you completelyfree of charge.
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