Khan Academy is on a mission to provide a free world-class education to anyone anywhere. With over 3000 videos covering everything from arithmetic to physics, finance, and history and 200 practice exercises, we're helping students learn whatever they want, whenever they want, at their own pace.
A free world-class education for anyone anywhere. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education to anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology. The Khan Academy's materials and resources are available to you completely free of charge.