Computing Research Association
http://www.cra.org
The Computing Research Association (CRA) is an association of more than 180 North American academic departments of computer science and computer engineering (CS&E); laboratories and centers in industry, government, and academia engaging in basic computing research; and affiliated professional societies. 

Microsoft Training & Certification Programs
http://www.microsoft.com/train_cert/
From this page, learn everything you need to know about getting trained and certified on Microsoft products and technologies, and discover all the resources you'll need to get started.

Networked Computer Science Technical Research Library
http://www.ncstrl.org
NCSTRL (pronounced "ancestral") is an international collection of computer science technical reports from CS departments and industrial and government research laboratories. 

TechEncyclopedia
http://www.techweb.com/encyclopedia/
More than 11,000 definitions of computer terms and concepts.  The source for this encyclopedia is The Computer Desktop Encyclopedia.  Very useful for authoritative computer and Internet technology definitions.

Cornell Theory Center Math and Science Gateway
http://www.tc.cornell.edu/Edu/MathSciGateway/ 
This Gateway provides links to resources in mathematics and science for educators and students in grades 9-12.

CRC Concise Encyclopedia of Mathematics
http://www.astro.virginia.edu/~eww6n/math/math.html
Award-winning site filled with information, exercises and Internet resources produced by a research scientist at the University of Virginia. 

ENC Online
http://carson.enc.org:80/ 
Extensive site produced by the Eisenhower National Clearinghouse for Mathematics and Science Education.

History of Mathematics
http://www-history.mcs.st-and.ac.uk/history/ 
This History of Mathematics archive includes biographies of over 1000 mathematicians and other historical information. Produced by the Mathematical MacTutor program developed at the School of Mathematical and Computational Sciences University of St. Andrews for learning and experimenting with mathematics.

Mathematics Archives WWW Server
http://archives.math.utk.edu/
Educational resources and the organized collection of links combine to make the Mathematics Archives a comprehensive site for mathematics on the Internet. 

The Math Forum Home Page
http://forum.swarthmore.edu/index.js.html 
A Center for Math Education on the Internet funded by the National Science Foundation.

Women Mathematicians
http://www.agnesscott.edu/lriddle/women/women.htm 
Web site for biographies of women in mathematics. These pages are part of an on-going project by students in mathematics classes at Agnes Scott College, in Atlanta, Georgia, to illustrate the achievements of women in the field of mathematics.