Great Free Learning Tool: Khan Academy

Khan Academy is a great site on science and math topics (some humanities). Even Bill Gates uses the site. Try the videos on...

• Biology
• Algebra
• Economics and finance
• French Revolution
• And so much more!
  

Site description:
Sal Kahn created this site and videos. Philosophy - "The Khan Academy is all about using video to explain the world, so what better way to explain the Khan Academy than through videos. If you watch four or five of the videos below, you should have a pretty good idea of how we got started and how we hope to empower everyone, everywhere with a free, world-class education"