www.mathrack.com
An amazing tool that is essential in any Prekindergarten through 2nd grade classroom. The MathRack (also known as Rekenrek) helps children build all the number relationships and develop fact fluency.
www.mathematicallyminded.com
This site has free downloads of Subitizing Cards, Missing Part Cards, Number Paths, and Place Value Cards.
http://k-2mathapps.blogspot.com/
Using iPads in your classroom? This is a great list of just math apps for kindergarten through 2nd grade.
