It's been merely a week since the official Khan Academy app was made available in Beta on Android. Now the app is ready to graduate to be visible to everyone on the Play Store, not just those that joined the Google+ beta community.

The app lets you browse Khan Academy's huge collection of educational videos and explanations on various topics ranging from math to science, history, economics, art, and more. Find something you want to study later on, while you're in the subway for example?

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