This is an old revision of this page, as edited by Confront(talk | contribs) at 00:55, 5 September 2009(started work on khan academy artical). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.Revision as of 00:55, 5 September 2009 by Confront(talk | contribs)(started work on khan academy artical)