Math:
http://www.internet4classrooms.com/skills_1st.htm
Skip Counting:
http://www.ictgames.com/fairyfog.html
http://www.oswego.org/ocsd-web/games/spookyseq/spookycb2.html
Odd and Even numbers:
http://www.oswego.org/ocsd-web/games/Ghostblasterseven/ghosteven.html
http://www.crickweb.co.uk/assets/resources/flash.php?&file=npmenu
Place Value:
http://www.learningbox.com/Base10/BaseTen.html
http://www.ictgames.com/sharknumbers.html
Addition and Subtraction:
http://www.learningbox.com/Base10/CatchTen.html
http://www.funbrain.com/cgi-bin/nl.cgi?A1=s&A2=0
http://www.harcourtschool.com/activity/thats_a_fact/english_K_3.html
http://www.harcourtschool.com/activity/thats_a_fact/english_K_3.html