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Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more. It’s all free for learners and teachers.
Need a Khan Academy account? 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.
Khan Academy's Mathematics 1 course is built to deliver a comprehensive, illuminating, engaging, and Common Core aligned experience!
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Learn about all the sciences, from physics, chemistry and biology, to cosmology and astronomy, across hundreds of videos, articles and practice questions.
Already have an account? 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.
Learn fourth grade math—arithmetic, measurement, geometry, fractions, and more. This course is aligned with Common Core standards.
Chemistry archive. The chemistry archive contains legacy chemistry content, and is not being updated with new content. Exercises and mastery mechanics will soon be removed from the chemistry archive. For our most up-to-date, mastery-enabled courses, check out High School Chemistry and AP Chemistry!
Khan Academy is an American non-profit educational organization created in 2006 by Sal Khan. Its goal is to create a set of online tools that help educate students. [4] The organization produces short video lessons. [5]
Physics archive. The physics archive contains legacy physics content, and is not being updated with new content. Exercises and mastery mechanics will soon be removed from the physics archive. For our most up-to-date, mastery-enabled courses, check out High School Physics and AP Physics!
