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Khan academy
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
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Early math review Learn early elementary math—counting, shapes, basic addition and subtraction, and more.
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Students will continue to be able to use Khan Academy's Official Digital SAT Prep courses, developed in partnership with College Board. However, our legacy Official SAT Practice experience - which supported students in preparing for the paper-and-pencil...
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Join Khan Academy and access thousands of free courses on math, science, art, programming, and more. Khan Academy is a nonprofit that aims to provide a world-class education for anyone, anywhere. Sign up today and start learning at your own pace.
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Aprenda Matemática, Artes, Programação de Computadores, Economia, Física, Química, Biologia, Medicina, Finanças, História e muito mais, gratuitamente. A Khan Academy é uma organização sem fins lucrativos com a missão de oferecer ensino de qualidade...
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Electromagnetic waves and interference. Geometric optics. Special relativity. Quantum Physics. Discoveries and projects. Review for AP Physics 1 exam. Cosmology and astronomy. Learn about all the sciences, from physics, chemistry and biology, to...
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A personalized learning resource for all ages. Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science,...
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Khan Academy is like a friend who will help you learn anything, any time. I used to fear mathematics, but then I fell in love with it because of Khan Academy. We are a not for profit organisation on a mission to provide world-class education for anyone,...
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SAT Practice on Khan Academy® is free, comprehensive, and available to all students. With personalized plans, practice tests and more, Khan Academy is good preparation for any test in the SAT Suite.
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How can I find courses that aren't listed in the Course menu?
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