Game Goo http://www.earobics.com/gamegoo/
Gamequarium: Reading, Language and Math http://www.gamequarium.com/index.htm
White House for Kids http://www.whitehouse.gov/kids/whlife/index.html
National Geographic for Kids http://www.nationalgeographic.com/kids/
I Know That-Great Website, Kids love it!!! http://www.iknowthat.com
Starfall: Early Reading Skills http://www.starfall.com