Math
www.khanacademy.com
www.ixl.com
www.prodigygame.com
Social Studies
http://www.mesopotamia.co.uk/menu.html
http://www.ancientegypt.co.uk/menu.html
http://www.ancientchina.co.uk/menu.html
http://www.ancientindia.co.uk/
http://www.ancientgreece.co.uk/
http://www.bbc.co.uk/history/forkids/
http://www.ducksters.com