The Khan Academy Educational Videos
The Khan Academy is a nonprofit organization that offers over 3000 educational videos for free. Topics include K-12 math, biology, chemistry, physics, finances, history, and more. They also have practice exercises and assessments.
The videos are short, especially made for internet viewing. In the math videos, you are looking at a blackboard. The instructor writes out the problem while talking you through it. In the other subject areas, there are often pictures accompanying the lesson. The videos have a comment section at the end for viewers to ask questions.
Use this site for homework help or educational recreation!
Check out this video from Khan Academy:
http://www.youtube.com/watch?feature=player_embedded&v=Nx4Xk5S4HQA
