The whimsical Math Cats web site offers tips and instructions for making and using your own “Math Toolbox” of free or low-cost math manipulatives, including
* Base Ten blocks
* tangrams
* egg carton math and more…
Make your own pattern blocks and base-ten blocks using these printable pages
www.frontiernet.net/~mmankus/Handson/manipulatives.htm#bd10
Incomptech.com provides free pdf generators for making your own graph papers and other specialty papers to print. Many allow you to set spacing and other variables.
NCTM Illuminations (http://illuminations.nctm.org/index2.html) has a host of online math activities, all tied to the standards, plus links to more math sites. This is rich…
You can also search the Eisenhower National Clearinghouse (http://www.enc.org/) for activities related to math & science. (now a paid subscription site, www.goenc.com)
