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 …

Khan Academy is an American educational nonprofit organization founded in 2008 by Sal Khan. The company was created with a goal of providing free, high-quality learning resources to students …

Sal Khan, the founder and CEO of Khan Academy, thinks artificial intelligence could spark the greatest positive transformation education has ever seen. He shares the opportunities he sees for students …

Did you know? Regardless of who you are, mastering even just one more skill on Khan Academy results in learning gains.

In the Mongol Empire it signified the ruler of a horde (ulus), while the ruler of all the Mongols was the khagan or great khan. It is a title commonly used to signify the head of a Pashtun tribe or clan. The …

Explore science with Khan Academy's free courses, videos, and exercises in physics, chemistry, biology, and more for a world-class education.

Salman Amin Khan (born October 11, 1976) is an American educator and the founder of Khan Academy, a free online non-profit educational platform with which he has produced over 6,500 video …

Learn fifth grade math—arithmetic with fractions and decimals, volume, unit conversion, graphing points, and more. This course is aligned with Common Core standards.

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Download videos for offline viewing, try our massive library of interactive exercises, bookmark things to study later, and complete assignments from your classes! Your progress stays in-sync with your …