Here are 10 educational websites that I have found:

1. http://www.kidsknowit.com/
2. http://www.learninggamesforkids.com/
3. http://www.scholastic.com/home/
4. http://www.funbrain.com/brain/ReadingBrain/ReadingBrain.html
5. http://pbskids.org/
6. http://www.clicknkids.com/
7. http://www.jumpstart.com/Default.aspx
8. http://www.starfall.com/
9. http://www.abcya.com/
10. http://kids.usa.gov/play-games/reading-and-writing/index.shtml