Coursera公开课
Coursera We just released an internationalized version of Coursera. If you want to switch back to English, please set your Language.... www.coursera.org
- 2013-11-17 - 收藏可汗学院Khan Academy
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
- 2013-11-17 - 收藏