Recreational Mathematics Links
Here are some of my favorite sites devoted to recreational and popular mathematics:
Alexander Bogomolny's
Interactive Mathematics Miscellany and
Puzzles
Kevin Brown's MathPages
Chris Caldwell's Prime Pages
Patrick De Geest's World of Numbers
Keith Devlin's column Devlin's Angle
David Eppstein's pages:
Erich Friedman's MathMagic
Brian Hayes' column Computing Science, in American Scientist
Nick Hobson's excellent site
Nick's Mathematical Puzzles
IBM's monthly Ponder This puzzle
Mike Keith's World of Words & Numbers
Scott Kim's column The Boggler, in Discover
Clark Kimberling's pages on
Triangle Centers
Ron Knott's pages on Fibonacci Numbers
Paul Kunkel's Mathematics Lessons
Mathematical jokes (beware, some are risque):
Mathematical quotations, collected by:
Mathematicians of the
Day, by the School of Statistics and Mathematics, University of St. Andrews, Scotland.
Changes daily, lists mathematicians who were born or died on each day, with quotations and
posters.
Mathematics Enrichment Club
Mudd Math Fun Facts, by
the Mathematics Department at Harvey Mudd College
John Allen Paulos' column
Who's Counting?
Ed Pegg Jr.'s Mathpuzzle.com
Ivar Peterson's columns:
Plus Magazine
Carlos Rivera's Prime Puzzles & Problems
Connection
Shack's Math Problems, by Michael
Shackleford. If you think you're smart, try these and be humbled.
Neil J.A. Sloane's On-Line
Encyclopedia of Integer Sequences
Southwest Missouri State University's
Problem Corner, with problems
at three levels of difficulty (high school, advanced, and challenge)
Alexandre Stefanov's list of
free mathematical textbooks available on the Internet
Eric Weisstein's MathWorld