Here are some games that are fun to play online! I loved to play the Oregon trail game when I was in school. I definitely did learn a lot. Another game that I found is called math baseball. This is a fun game to play because you get to play baseball too!
Oregon trail- http://woz.commtechlab.msu.edu/courses/447sp04/oregontrail/play.htm
Math baseball- http://www.funbrain.com/cgi-bin/mb.cgi
