A father brags about his son’s increase in Math competency after only 3 months of Kahn Academy!
https://twitter.com/#!/khanacademy
http://www.khanacademy.org/about
http://astore.amazon.com/lifsjouagrass-20/detail/B005ELMC0Q
A father brags about his son’s increase in Math competency after only 3 months of Kahn Academy!
https://twitter.com/#!/khanacademy
http://www.khanacademy.org/about
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