Some of My Favorite Links:

Math Social Studies
MathsKit History Globe
Math Playground Social Studies Interactives
Math Advantage Internet Resources
PBS Science & Nature Animated Math Glossary Social Studies for Kids
Study Jams by Scholastics EDSITEment for History
Language Arts Reading Generic
Kids Mystery Read/Write/Think Favorite Web 2.0 Links
EDSITEment ReadingQuest Teacher Planet
Cheryl Sigmon Speakaboos Pete's PowerPoint Station
Primary Stories Online Into the Book Thinkfinity
Harcourt Language Just One More Book Themes
Eduplace Book Adventure SailOn