How do you find the square root of a number? What is exponential decay? What is the Cuban Missile Crisis? What can I expect on the GMAT? Khan Academy can help you answer these questions and thousands more. The non-profit organization's goal is to change "education for the better by providing a free world-class education for anyone anywhere." Students (or anyone) can access the free video lessons from any computer that has internet access. After watching a 20/20 segment in September 2011, my middle school daughter started using the site to help her understand Algebra lessons. It's made homework time less stressful!
20/20 Story:
http://www.khanacademy.org/talks-and-interviews/v/khan-academy-on-20-20--sep-2011
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