(Sample link) White House for Kids http://www.whitehouse.gov/kids/whlife/index.html
(Sample link) National Geographic for Kids http://www.nationalgeographic.com/kids/
(Sample link) Fun activities - by girls....for girls. http://www.missoandfriends.com/
Math Practice http://www.aaamath.com
Math Games http://www.aplusmath.com/Games/games.html
Games to practice http://www.funbrain.com
Math Practice http://www.kidsknowit.com