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

The Khan Academy

  •   
  •   n2n3 · Jul 30, 2011 · 5547 views
    This topic created in 5463 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   ·   Solana   ·   5812 Online   Highest 6679   ·     Select Language
    创意工作者们的社区
    World is powered by solitude
    VERSION: 3.9.8.5 · 44ms · UTC 03:07 · PVG 11:07 · LAX 20:07 · JFK 23:07
    ♥ Do have faith in what you're doing.