User contributions
12 January 2009
Activity Team/TODO
Math
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User:Ysun
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User:Ysun
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m-2
User:Ysun
New page: ==Hi== I'm Yifan Sun. I work with the F.W.Olin OLPC chapter in Needham, Mass. as software person and driving puppet. I'm interested in all things electrical/computer engineering, and have ...