Starfall Reading http://www.starfall.com/
One More Story http://www.onemorestory.com/
Patterns http://funschool.kaboose.com/preschool/games/game_crazy_pattern_machine_the.html
More Patterns http://www.primarygames.com/patterns/question1.htm
Place Value http://www.learningbox.com/Base10/BaseTen.html
FOSS Science http://www.fossweb.com/modulesK-2/index.html