Khan Academy


Khan Academy's personalized learning library is available for free to anyone who wants to learn, whether you are a student, teacher, homeschooler, principal, an adult who is returning to the classroom after a long gap, or even a friendly alien who wants to get a leg up in earthly biology.
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Khan Academy
Apr 4, 2023
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At Khan Academy, you have access to a personalised learning library that’s free and available to anyone, regardless of whether you’re a student, teacher, homeschooler, principal, or an extraterrestrial being curious about earthly biology.

With thousands of interactive exercises, videos, and articles, you can learn anything, from math and science to economics, grammar, history, and much more. You can practice exercises, quizzes, and tests with instant feedback and step-by-step hints to sharpen your skills, and bookmark and download your favorite content to watch videos offline.

Khan Academy’s mastery system is tailored to your current learning level and gives instant feedback and recommendations on which skills and videos to try next. And, if you create a free account, your progress syncs with the website, so you can pick up where you left off and access your learning across all your devices.

Learn from expert-created videos, interactive exercises, and in-depth articles on subjects such as math (arithmetic, pre-algebra, algebra, geometry, trigonometry, statistics, calculus, differential equations, linear algebra), science (biology, chemistry, physics), economics (microeconomics, macroeconomics, finance and capital markets), humanities (art history, civics, finance, US history, US government and politics, world history), and more (including computer science principles)!

Please note that not all functionality available on the Khan Academy website is available on this app. Community discussions, computer programming content, test prep, parent tools, teacher tools, and district tools should all be accessed directly at

Khan Academy is a 501(c)(3) nonprofit organisation dedicated to providing a free, world-class education to anyone, anywhere.

What's new

∙ Introducing the “Start over” option! Now, while working on practice activities, you’ll have the option to quickly restart the activity from the beginning with just one tap. This feature allows you to restart practice without affecting your Mastery progress, making it easier than ever to learn. Try it out now and experience the difference!
∙ Bug fixes and performance improvements.