Fun and Interesting
The Math Forum's Internet Mathematics Library
contains a Recreations category, with topics from the lighter side of mathematics.
The Library also offers collections of math games and math-oriented sports sites.
- ACME Klein Bottles - Cliff Stoll
- Searching for a one-sided surface? Need a zero-volume bottle? Want the ultimate in non-orientability? Get an ACME Klein bottle!
- Constructor animates and edits two-dimensional models made out of masses and springs.
The springs can be controlled by a wave to make pulsing muscles, and you can construct models
that bounce, roll, walk, etc.
Erdös Number Project - Jerry Grossman
- Paul Erdos wrote hundreds of mathematical research papers in many different areas,
many in collaboration with others. His Erdos number is 0. Erdos's co-authors have
Erdos number 1...
- San Francisco's museum of science, art and human perception. Online exhibits, cool
sites, archives, sport and science, and the digital library (the Exploratorium A-to-Z).
Visit the Exploratorium's Science of
Baseball, Science of Cycling,
Science of Hockey, and
- Grafica Obscura
- Paul Haeberli
- An evolving computer graphics notebook.
- Optical Illusions
(SandlotScience.com) - SandlotScience
- Interactive explorations of optical effects, illusions, distortions, animations,
artwork, stories, PDF projects, games, and more.
To locate college-level recreation sites, choose a topic from the
left-hand menu and press the SEARCH button. Looking for something specific?
Type in a keyword, choose a topic, and press the SEARCH button.