http://www.Wikipedia.org (Thanks Jacob)
Stock Market game
for Luke at education-world
Eduplace(WebTales)
Parts of Speech
Brain Pop
Interpret into other
languages
Greater
Links
Fabulous
links
Mathematics Links: 
Fractions,
Fractions, and more
fractions
CoolMath Jeopardy
Math.com
Funbrain
Rounding numbers
Base 10 blocks
Pattern Blocks
Telling Time
Math Mavens
Math
Manipulatives
Math for 4th graders
Extra Credit Math links
Literature
Island of the Blue Dolphins
Children's Stories
Extra Credit Book Reports
Fourth Grade
Literature Books
Excellent
Links for all Subjects
The
Night of the Twister
Patty Reed's Doll
By the Great Horn
Spoon