Math activities http://www.ixl.com/math/grade/first
Reading and writing games and activities http://www.starfall.com/
Build a word http://www.readwritethink.org/files/resources/interactives/construct/index.html
Word sort http://www.readwritethink.org/files/resources/interactives/wordfamily/
Dr. Seuss games http://www.seussville.com/
Play games and watch videos on Curious George, Clifford and Arthur along with some of your other favorite characters. http://pbskids.org/
Play games like I Spy, Clifford, and The Magic School Bus http://www.scholastic.com/parents/play/games/
http://www.abcya.com
letter, number activities