Try these new websites....

http://www.readwritethink.org/files/resources/interactives/wordfamily/

http://www.aplusmath.com/cgi-bin/games/addpicture

http://kids.nationalgeographic.com/kids/

http://www.starfall.com/

http://www.readwritethink.org/files/resources/interactives/in_the_bag

http://www.mightybook.com/index.html

http://www.coolmath.com/