Here are a few of our favorite sites.
Textbook - Show Me and Games Harcourt Math
Great for reading. Starfall
The Learning Site Social Studies
Practice Math Facts / Check how your child is doing. Renaissance
Science Textbook http://www.thinkcentral.com/index.htm
Letter sound card, Decodable Books, Games to reinforce reading skills SRA Reading - Imagine It Reading Series
Practice Math skills online. 1st Grade Math Place Skills
Educational Games Arcademic Skill Builders
Alphabet Animation Basic Handwriting
Check out the Videos and Building Activities Mr. Roger's Neighborhood