Home Sign Up Sign In
Great Sources
› TED
n2n3
V2EX  ›  教育

The Khan Academy

  •   
  •   n2n3 · Jul 30, 2011 · 5717 views
    This topic created in 5523 days ago, the information mentioned may be changed or developed.
    http://www.youtube.com/user/khanacademy

    http://www.khanacademy.org/
    No Comments Yet
    About   ·   Help   ·   Advertise   ·   Blog   ·   API   ·   FAQ   ·   Privacy   ·   Solana   ·   2975 Online   Highest 6679   ·     Select Language
    创意工作者们的社区
    World is powered by solitude
    VERSION: 3.9.8.5 · 28ms · UTC 13:58 · PVG 21:58 · LAX 06:58 · JFK 09:58
    ♥ Do have faith in what you're doing.