An Adventure in Math - Interactive math activities 

Convert-me.com - This site has interactive calculators for many common and exotic measurement systems, including metric, Ancient Greek, Roman, and old Russian. Measurements include weight and mass, distance and length, capacity and volume, area, speed, temperature, time, pressure, energy and work, circular measure, and computer storage. Also available in Russian (Cyrillic font). - rmh Subjects: Conversion tables | Weights and measures

ENC - Eisenhower National Clearinghouse - use the search engine to find answers to math topics.  Real World Math & Science - a good starting point for exploring Internet projects to bring the real world into the classroom.

Explore Math - Both Math and Science Sites have become much more interactive.  Now a pay-site.  Can get a free trial.  (10-03)

Interactive Mathematics Online - A ThinkQuest project with many neat ideas.

Math.com - A comprehensive free Web site that addresses the math needs of students, teachers, and parents.  Provides mathematical problems, solutions, workbooks, worksheets, and drills in a fun manner.  

Mathematics Sites and Pages

Mathematics and Science Materials Links - after the list of links, there is a search option at the bottom of the page.

Steve's The Math Forum Internet Resource Collection - A fabulous math site. Well organized. Math links are listed according to school level.

WebMath Site - "Webmath is a math-help web site that generates answers to specific math questions, as entered by a user of the site, at any particular moment.  In fact, currently, Webmath is of little use unless a particular math problem to solve is typed into it."