You can learn anything. For free.
Spend an afternoon brushing up on statistics, learning about the Krebs cycle, or getting a head start on next semester's geometry with Khan Academy. This personalized learning library is available for free to students, teachers, homeschoolers, principals, adults returning to the classroom, and even friendly aliens looking to learn about earthly biology.
With thousands of interactive exercises, videos, and articles, you can learn anything from math and science to economics, grammar, history, and more. Practice exercises, quizzes, and tests with instant feedback and step-by-step hints to sharpen your skills. You can also bookmark and download your favorite content to watch videos offline.
Khan Academy's mastery system tailors your learning experience to your current level, providing instant feedback and recommendations for which skills and videos to try next. And if you create a free account, your progress will sync across all your devices. The app offers expert-created videos, interactive exercises, and in-depth articles in a variety of subjects, including math, science, economics, humanities, and computer science principles.
If you're already familiar with the Khan Academy website, note that not all functionality is available in the app. Community discussions, computer programming content, test prep, parent tools, teacher tools, and district tools should be accessed directly on the website. Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. So whether you're a student, teacher, or just someone looking to learn something new, Khan Academy is here to help you on your educational journey.
Spend an afternoon brushing up on statistics. Discover how the Krebs cycle works. Get a head start on next semester's geometry. Prepare for upcoming exams. Or, if you're feeling particularly adventurous, learn how fire-stick farming changes the landscape of Australia.
Whether you're a student, teacher, homeschooler, principal, adult returning to the classroom after 20 years, or a friendly alien trying to get a leg up in earthly biology — Khan Academy's personalized learning library is available to you, for free.
- Learn anything, for free: Thousands of interactive exercises, videos, and articles at your fingertips. Study math, science, economics, finance, grammar, history, government, politics, and much, much more.
- Sharpen your skills: Practice exercises, quizzes, and tests with instant feedback and step-by-step hints. Follow along with what you're learning in school, or practice at your own pace.
- Keep learning when you're offline: Bookmark and download your favorite content to watch videos without an internet connection.
- Pick up where you left off: Tailored to your current learning level, our mastery system gives instant feedback and recommendations on exactly which skills and videos to try next. And, if you choose to create a free account, your learning syncs with http://khanacademy.org, so your progress is always up-to-date across all your devices.
Learn using expert-created videos, interactive exercises, and in-depth articles in 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)!
Already familiar with the Khan Academy website? Not all functionality is available in this app. Community discussions, computer programming content, test prep, parent tools, teacher tools, and district tools should all be accessed directly at http://khanacademy.org.
Khan Academy is a 501(c)(3) nonprofit organization, with the mission of providing a free, world-class education for anyone, anywhere.