(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/
Students get to review skills for any subject while choosing from a variety of games. Student password is their AR number. http://www.studyisland.com
Math games http://www.coolmath4kids.com
Multiplication http://www.multiplication.com
One or two player jeopardy gamethat helps students practice analogies. http://www.quia.com/cb/7146.html
Learn about the states. http://www.kids/gov/k_states.html
Science http://www.scholastic.com/magicschoolbus/
Review 3rd grade skills. Go to the site and search 3rd grade and you'll find interactive games to reinforce several subjects and skills. http://www.internet4classrooms.com