Below are several of the author's favorite web sites for elementary school teachers. You can search within most of these sites (search the NCTM site to find NCTM journal articles, search the Math Forum site for certain topics/definitions, etc.). You may also want to use a search engine to find other interesting sites-for instance, try a search for 'tessellation elementary'.

We make every attempt to ensure these links are active and up-to-date. However, if you should find that a link is inactive or has expired, please contact us at csweb@cengage.com.

Eisenhower National Clearinghouse
http://www.enc.org/

Math Forum
http://forum.swarthmore.edu/

Kathy Schrock's Guide for Educators: not just mathematics
http://discoveryschool.com/schrockguide/

NCTM (National Council of Teachers of Mathematics)
http://www.nctm.org/

Jill Britton's home page: Lots of ideas and links for geometry
http://www.camosun.bc.ca/~jbritton/Home.htm

Butterflies
http://butterflywebsite.com/

NRICH Math Club: British web site for mathematics
http://www.nrich.maths.org/

Biographies of Women Mathematicians
http://www.agnesscott.edu/lriddle/women/women.htm

NY Times Lesson plans
http://www.nytimes.com/learning/teachers/lessons/mathematics.html