Khan Academy

Khan Academy is an organization on a mission, a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.All of the site’s resources are available to anyone. Khan Academy’s materials and resources are available to you completely free of charge.

Students can make use of extensive content, including interactive challenges, assessments, and videos from any computer with access to the web.

Salman Khan Speaking at TED 2011

Khan Academy has lessons on Science,  Humanities, Economics, and more,  but the Math sections are probably the most popular as they are an excellent supplement to your in class learning.

Practice math at your own pace with their adaptive assessment environment. You can start at 1 + 1 and work your way into calculus or jump right into whatever topic needs some brushing up.

Each problem is randomly generated, so you never run out of practice material. If you need a hint, every single problem can be broken down, step-by-step, with one click. If you need more help, you can always watch a related video.

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