Khan Academy: Free Lectures on Math, Physics, Biology, Economics, and History

It is very rare that I go so far off-topic on my blog, but then again, it is very rare that I find something so cool.  Salman Khan (khanacademy.org) has recorded over 1500 mini-lectures on a wide variety of topics, organized in a cohesive fashion and made available for free on YouTube.  I have already spent several enjoyable hours watching his videos, and plan on spending many more.  What he has put together is an act of generosity that deserves to be recognized.

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Blog TOCAlong the same vein, the Feynman lectures on physics are very cool too.

Comments

• Anonymous
  December 04, 2010
  a real service to students and humanity

• Anonymous
  December 28, 2010
  a level biology..............biological molecule

• Anonymous
  June 17, 2011
  its  easy  to  understand  without  any  help

• Anonymous
  July 11, 2011
  give me the brife explanation of mitochondria

• Anonymous
  July 19, 2011
  ITS REALY VERY HELPFUL TO ALL THE STUDENTS TO UNDERSTAND WITHOUT ANY HELP OF OTHERS

• Anonymous
  July 19, 2011
  khan academy is a good help to every one

• Anonymous
  December 08, 2011
  good jog and i am also thankful to him who provide us a good learning method...thanx

• Anonymous
  January 03, 2012
  please send lecture about long day and short day plant