1. 

Eric Weisstein's World of Mathematics
 "MathWorld is a convenient, comprehensive, and interactive mathematics encyclopedia intended for students, educators, math enthusiasts, and researchers."
URL: http://mathworld.wolfram.com

2. 

The New Mathwright Library
 The New Mathwright Library is a free collection of more than 110 interactive mathematics and science books. These electronic books, developed by math and science teachers (and students), have been used in Webbased mathematics courses taught at universities and secondary schools.
URL: http://www.mathwright.com

3. 

Favorite Mathematical Constants
 This website is a collection of more than 70 essays and a Table of Mathematical Constants. For each constant, the table provides its value, a brief description, and a link to one of the essays. Some of the material can be downloaded in postscript form.
URL: http://www.mathsoft.com/asolve/constant/constant.html

4. 

Unsolved Mathematics Problems
 This evolving collection of unsolved mathematics problems is not systematic or complete; it is only an eclectic gathering of questions and partial answers which have come to my attention over the years.
URL: http://www.mathsoft.com/asolve/index.html

5. 

Mathstories.com
 The goal of this web site is to help grade school children improve their math problemsolving skills. This site started out as only a few pages, but it has grown to hundreds of pages with over 2,000 math word problems for children to enjoy!
URL: http://www.mathstories.com

6. 

OnLine Encyclopedia of Integer Sequences
 At the present time the table contains around 50000 sequences. 5487 of the best of these sequences were published in 1995 in The Encyclopedia of Integer Sequences, by me and Simon Plouffe.
URL: http://www.research.att.com/~njas/sequences

7. 

Important Formulae for Complex Numbers
 Has Lorenz attractors, Henon Map, etc.
URL: http://www.lifesmith.com/technical.html

8. 

JOMA  Journal of Online Mathematics and its Applications
 Published by the Mathematical Association of America, this new online journal aims to advance the mathematical sciences, especially at the college level, by promoting effective teaching, fostering scholarship, and "making modern tools, curricula, and active learning environments more accessible to students and teachers everywhere."
URL: http://www.joma.org/

9. 

Math Forum Internet Mathematics Library: Hot Spot of the Month
 Monthly listing of one excellent math website for students.
URL: http://mathforum.org/library/hotspots/00.html

10. 

Inverse Symbolic Calculator [java applet]
 You input an approximate real number and the
search engine will search for a symbolic
number that matches or is close to the
search number.
URL: http://www.cecm.sfu.ca/projects/ISC/ISCmain.html
