Math/Logic
Ultimate Bullseye - Game
Codebreakers - Game
Gadgadsgame - Game
Maths Nightmare - Game
Deckswabber - Game
Money Flashcards - Practice

Science
Chemistry For Beginners - Game
EPA Student Center - Reference
Discover.com - Reference Discovery Kids - Reference
Club Catterpiller - Fun & Ref
Coral Reef Fun - Fun
Ask Dr. Universe - Reference

Social Studies
Crypt Raider - Game
Women of Distinction - Reference
Ben's Guide - Reference
Kids Dig Reed - Reference
Liberty's Kids - Reference
The King Center - Reference
US Historical Documents - Reference
eField Trips - Field Trips!

Reading/Writing
Spell or Starve - Game
Castle of Eliv Thade - Game
Letter Lasso - Game
Mythweb - Reference
The Hero's Journey - Reference
Redwall Abbey: The Official Redwall Web Site - Reference
Learn To Read - Fun!
Word of the Day - Reference

Arts
Mr Picassohead - Reference
Exploratorium - Fun!
Wisconsin School Music Association - Reference

Everything Else!
Ask Jeeves for Kids - Search
NewsBank Kids' Page - Reference
Zeeks - Fun
FunBrain - Fun
GameGoo - Games
AAA Math - Reference
Coolmath 4 Kids - Fun!!!