I have found a truly awesome educational resource in the Internet, the Khan Academy.
From the website:
The Khan Academy is a not-for-profit organization with the mission of providing a high quality education to anyone, anywhere.
We have 1000+ videos on YouTube covering everything from basic arithmetic and algebra to differential equations, physics, chemistry, biology and finance which have been recorded by Salman Khan.
I have viewed several of the teaching videos and they are excellent. Done in a very nice “blackboard” style with Mr. Khan speaking, they are very much to the point and highly interesting. The vast number of subject areas covered is impressive – most are mathematics and science related. Done as individual lessons on very distinct topics, one can freely pick and choose any lesson as a stand alone tutorial or pull several together to build a curriculum. I recommend this wonderful resource!