Spelling City http://www.spellingcity.com
National Geographic for Kids http://www.nationalgeographic.com/kids/
Fun activities - by girls....for girls. http://www.missoandfriends.com/
Congress of Kids http://www.congressforkids.net/games/writingconstitution/2_writingconstitution.htm
Reading and Language Games for All Levels http://www.readwritethink.org/student_mat/index.asp
Scholastic http://www.scholastic.com/kids/games.htm
Fun Brain Reading http://www.funbrain.com/brain/ReadingBrain/ReadingBrain.html
Social Studies State Triviz http://www.apples4theteacher.com/map-of-usa.html
Online Field Trips http://www.field-guides.com/trips.htm
Animated, interactive math dictionary with definitions of over 600 common math terms in simple language. http://www.amathsdictionaryforkids.com/
Presidential Facts http://www.whitehouse.gov/about/presidents/