Enchanted Learning - a great resource for science and social studies http://www.enchantedlearning.com
That's a Fact (math fact practice) http://www.harcourtschool.com/activity/thats_a_fact/
http://www.mathfactcafe.com
http://www.funbrain.com
www.eduplace.com
Cursive writing http://www.handwritingforkids.com/handwrite/cursive/animation/lowercase.htm
Spelling Practice http://www.spellingcity.com/mrsfick123/