Math

Addition and Subtraction Games

http://illuminations.nctm.org/Search.aspx?view=search&st=n&gr=Pre-K-2

http://www.bbc.co.uk/schools/laac/numbers/chi.shtml

http://www.ictgames.com/save_the_whale_v4.html

http://resources.oswego.org/games/ghostblasters2/gb2nores.html

http://www.ictgames.com/flight_for_fuel.html

Geometry Games
http://pbskids.org/cyberchase/games/area/tangram.html/

http://nlvm.usu.edu/en/nav/frames_asid_268_g_1_t_3.html
Data Games

http://www.learner.org/teacherslab/math/patterns/buttons/

http://nlvm.usu.edu/en/nav/frames_asid_270_g_1_t_3.html

General Math Games

http://www.crickweb.co.uk/Early-Years.html#