www.nctm.org
National Council of Teachers of Mathematics. Learn more about membership in this professional organization.

www.safekids.com
This site has good, basic information for children using the Internet.

www.kidsbank.com
Kids learn about money and banking on this site by Sovereign Bank (a commercial bank). An excellent exploration site.

aes.iupui.edu/rwise/
World Paper Money Homepage. See what money looks like from countries all over the world.