Check out these websites!

Language Arts

                                                             Spelling City

Storyline Online

  Primary Games Language Arts

Make a Word

Make Beliefs Comix

Math

Everyday Math Games by Unit

Cash Out

Fact Monster

AAA Math

Science

National Geographic Kids

Scholastic's The Magic School Bus

NASA Kids' Club

Woodland Explorer

Social Studies

Ben's Guide to U.S. Government For Kids

Time For Kids

Library of Congress-America's Story From America's Library

GeoSpy