Other resources:

1. Online Pre-Algebra: http://free-ed.net/free-ed/Math/PreAlg01/default.asp

2. The mathpage: http://www.themathpage.com/alg/algebra.htm

3. Interactive math: http://www.intmath.com/

4. Algebra with Games:http://www.gamequarium.com/prealgebra.html

5. 24 points Game:http://www.google.com/ig/directory?type=gadgets&url=www.google.com/ig/modules/chinagadgets/24points/24points.xml