White House for Kids http://www.whitehouse.gov/kids/whlife/index.html
National Geographic for Kids http://www.nationalgeographic.com/kids/
Fun activities - by girls....for girls. http://www.missoandfriends.com/
Math Fact Cafe free math worksheets http://www.mathfactcafe.com
Timed math facts on the computer. You can set the time for your child, and past results can be compared. http://pedagonet.com/FastMath/mathfacts.html