- Biographies of Women Mathematicians
Excellent site maintained by students in math courses at Agnes Scott College.
- Constants and Equations Pages
Searchable and alphabetically arranged guide to math terms, equations, concepts. Compiled by Eric Weisstein, research scientist at the U of Virginia.
- Euclid’s Elements
- Geometry Center
From the U of Minnesota, this site is funded by the National Science foundation. It includes math visualizations and math education curriculum.
- History of Mathematics
- MacTutor History of Math Archive
Good place to begin study in the history of math. Developed at the University of St. Andrews in Scotland. Short biographies of 1200 mathematicians and brief histories of mathematical topics.
- Math Forum
- Math Quotations Server
A collection of quotations about math from a variety of sources. Searchable.
- Glossary of Mathematical Mistakes
List of math mistakes made over and over by advertisers, the media, reporters, politicians, etc. Has a Mistake of the Month, plus you can test your math skills in Puzzles and Problems.