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02 มีนาคม 2555

Learn free with khanacademy.org

Learn free with khanacademy.org

A free world-class education for anyone anywhere.



TheKhan Academy is an organization on a mission. We're a not-for-profit withthe goal of changing education forthe better by providing a free world-class education to anyone anywhere.
All ofthe site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning tothe classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology.TheKhan Academy's materials and resources are available to you completely free of charge.

Browse our library of over 2,100 educational videos...



Topics covered from very basic algebra allthe way through algebra II. This isthe best algebra playlist to start at if you've never seen algebra before. Once you get your feet wet, you may want to try some ofthe videos inthe "Algebra I Worked Examples" playlist.