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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)!
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∙ Bug fixes and performance improvements.
Ratings and Reviews
Khan Academy is an education app for everyone—whether you’re a parent helping your first grader with geometry or a postgrad looking for a deep dive into microfinance. If there’s a topic you want to learn about—no matter how basic or advanced—chances are Khan Academy has a video lesson for it.
This app is absolutely fantastic and I want to make it clear I gave it 4 stars only because I personally have some things I wished would be added to to make this app better. Like for instance videos that are not drawn out by hand, don’t get me wrong this is a good visual sometimes but sometimes I feel the visual falls kinda short to if it was either animated or demonstrated (specifically for the science lessons especially). That being said I want to be clear, that’s all fine tuning for the perfection of this app. This app has helped me learn soooo much and it’s completely free. Most all of the teachers are excellent and the fact that this is videotaped lectures means you can watch anytime at your own speed. I wished things like this were used more widely and familiarized in my state (not that a lot of people don’t use it already cause they do, I just wished it got pointed to if nothing else more as a sort of in general go to guide among other similar programs by schools and government PSAs more.) but that’s not this apps fault. My hopes is that some elected official somewhere will see this comment and this will give them the idea to make this more second nature for people to pick up somehow via PSAs etc
I personally love this app. My son and daughter has been using it until they were toddlers since they are twelve now they still use it! I told them to use it a lot since that they could still use it when they are older....my son he uses it when he has stress with his homework so that he could have more ideas! I think this app is made for everyone because when they were just little small toddler I helped them on some stuff so they could do some simple math an now since they are older now I could let them be so they could experience the world of learning in Khan Academy! I decided to write a review this time of the year because since they are back to school they could maybe have some experience in what their class is learning! Something they really like about this app and I do too is that it corrects them if they got it wrong so they try it again. But um mean during quarantine when school did not start yet they have been using this app for hours...every time their mom and I ask them out for lunch or breakfast they always say 1 more hour 🤗. I think they really like it now but I think they are too into it their mom said maybe their growing up to fast and forgetting about us. But I think that they just need to have some time and think! OTHERWISE THEY LOVE THE APP!!! THANK YOU SO MUCH FOR MAKING THIS APP AND YOUR TEAM WE LOVE IT!!!!
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- Khan Academy
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