Starfall :
A great interactive site to help children master letter names and sounds and take them further with their reading skills.
http://www.starfall.com
SUMdog:
A website that has fun math games to play. They cover 100 numeracy skills, split into 10 levels. Most are multiplayers, so you can play against thousands of students worldwide. The games are engaging for students the will develop their mental math skills while having fun!
www.sumdog.com
Funbrain:
Interactive educational games and online books and that develop skills in math and reading. It is for kids in grades PreK-8.
www.funbrain.com
Sheppard Software:
Hundreds of fun educational games and activities for kids to play online. Topics include math, geography, animals, and more.
www.sheppardsoftware.com
Tumblebooks:
This website provides opportunitites to listen to stories through through the computer. It is a wonderful way for your child to hear great fluency, be introduced to different stories and authors, and enjoy a good book. It is available for free through the Westerville Public Library.
http://www.tumblebooks.com/library/asp/home