Some of websites that you might find helpful
1. Fun Brain - http://www.funbrain.com/kidscenter.html
2. Funschool- http://funschool.kaboose.com
3. Internet4Classrooms - http://internet4classrooms.com
4. I Know That - http://iknowthat.com
5. LearningPlanet.com - http://learningplanet.com
6. Starfall Reading - http://www.starfall.com