Math games for kids (addition, subtraction, multiplication, division, and geometry) http://www.aplusmath.com/games/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/
Website for educational games http://www.funbrain.com
Math, Language, Science, Geography, Music, and sports educational games http://funschool.kaboose.com/arcade/
More educational games http://www.abcya.com/third_grade_computers.htm
Great tool for learning spelling words!! http://www.spellingcity.com/