Parents Check this out!!!

If you are looking for hands on manipulatives try theses sites:

http://www.pbs.org/wgbh/nova/proof/puzzle/

http://members.shaw.ca/ron.blond/perp.APPLET/index.html

http://nces.ed.gov/nceskids/chances/

tangrams:
http://pbskids.org/cyberchase/games/area/tangram.html

graphing:
http://pbskids.org/cyberchase/games/area/tangram.html

http://www.xpmath.com/

Algebra:
http://www.purplemath.com/

http://www.mathplayground.com/