KHAN Academy

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Tackle math, science, computer programming, history, art history, economics, and more with video lessons. Math lessons guide learners from kindergarten to calculus. Also check out partner sites such as NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT for specialized content.

Khan Academy is a non-profit educational organization created in 2006 by educator Salman Khan to provide "a free, world-class education for anyone, anywhere". The organization produces micro lectures in the form of YouTube videos.

Parents and teachers can both create their own partner accounts to help children use the site more effectively.

Recommended by WGN Morning News as a great site for parents to brush up on skills to help children with homework.