Mathpuzzle.com
http://www.mathpuzzle.com
Another great site for recreational math and puzzles.
Puzzles.com
http://www.puzzles.com
Illusions, puzzles, tricks and toys can be found here. There is also a gift shop, puz-
zle links, and online help.What Web sitecontains some fun (and interesting) factsabout mathematics?
If you are interested in fun facts about math and don’t want to hunt all over the Web
for them, go to Mudd Math Fun Facts, located at http://www.math.hmc.edu/funfacts/.
Created by Francis Edward Su of the Harvey Mudd College Math Department as a
“warm-up” activity for calculus courses, these are tidbits from all areas of math. The
site is definitely fun, entertaining, and addictive.462
What site has just about everything
a person needs to know about an abacus?T
he award-winning “Abacus: The Art of Calculating with Beads” by Luis Fer-
nandes offers a tutorial on using the abacus. It includes pages on the history
of the abacus, how to do basic math using an abacus, an interactive tutor, arti-
cles and stories, and references and links to other sites. The Web site is http://
http://www.ee.ryerson.ca/~elf/abacus/.