Check out a few good web-sites for math stuff I've found!

Larry Green's Applet Page
Has applets to help with everything from basic math to calculus and statistics!

Susan's Math Applet site
Web-site last updated in 2001, but still has a lot of links to some very good applet web-sites

The Interactive Library
Web-site is a library of applets, etc. for several subjects including mathematics

Interactivate
**Excellent web-site whose goal it is to make good java-based applets available**

Cut the Knot.org
Taught properly, it's a front door to the power of algebra. This web-site not only has applets, but it has detailed explanations of the applets.

Analyze math.com