Cool Math For Kids - good site! Games, too.
http://www.coolmath4kids.com
Virtual Manipulatives - great site!
http://www.nlvm.usu.edu/en/nav/vlibrary.html
Homework/ Math help - good site
http://drmath.com
Optical Illusions, other diversions
http://www.sandlotscience.com
More Illusions, other diversions
http://www.noblur.com
Best Game EVER!
http://www.blokus.com
Homework help - All Subjects -Subscription (some free stuff)
http://www.brainpop.com
Worksheet Generator - Subscription (some free stuff)
http://www.edhelper.com
Puzzle Site - A Bit Pricey
http://tavernpuzzles.stores.yahoo.net/puzzle.html
Puzzle Site - Mr. H's favorite
http://www.frik-n-frak.com/
Great Sudoku, other logic puzzles, riddles, etc.
http://www.brainbashers.com
Central California Labrador Retriever Rescue
http://www.cc-labrescue.org
TIMES TABLES HELP - Click 'games' or 'worksheets' or explore the site
http://www.multiplication.com
Textbook Resources Online (this is a great new feature - videos, extra
practice, live help, tips for parents, .....)
http://www.go.hrw.com