Fun Math Sites for Kids:

Math Gym
Aplus math
Cool Math-4-Kids
Fun Science Sites for Kids:

NASA

Discovery Channel
National Science Foundation
Grove City
Fun Reading Sites for Kids:

Columbus Metropolitan Library
Home
Richard Avenue PTA
everychild.onevoice.

Fun History Sites for Kids:

BBC History
Geneology for kids
Library of Congress-American History

Fun Sites with All Sorts of Stuff:

Ohio Treasure Chest

InfOhio
Children's Hospital kids health
BrainPop
PBS Kids
Fun Brain
Smithsonian
The White House
FBI Kids