Math for Fun

Math Cats - Games, crafts, art, and story problems featuring cats. Encourages children and teens to enjoy and explore mathematical concepts.
http://www.mathcats.com/

The Contest Center - Classic puzzles and riddles requiring only simple logic and elementary math.
http://www.contestcen.com/classic.htm

Mike's Math Club - Includes puzzles and games to test knowledge of basic skills.
http://www.mff.org/mmc

Sodaplay - Includes the Soda Constructor, a Java applet that animates two dimensional models made out of masses and springs.
http://www.sodaplay.com/

Mathemusements - Tutorial on how to play magic square games. Gives historical background and different types of illustrations.
http://www.sciencenewsforkids.org/pages/puzzlezone/muse/muse1103.asp

Kids Place Brain Teasers - Test your skills with this weekly series of problems. Includes links to last week's questions and answers.
http://www.eduplace.com/math/brain/

Allmath.com - Interactive game to construct Magic Squares. Different degrees of difficulty and size. Hints and solutions provided.
http://www.allmath.com/magicsquare.php

The Mathsfile Game Show - Hosted by the ancient mathematicians, Hypatia and Pythagoras, 11-14 years old students can have fun working through a variety of games and print offs.
http://www.bbc.co.uk/education/mathsfile/

Online Math Games For Kids - Has online math games for middle school kids. Worksheets and flashcards too.
http://www.scweb4free.com

Count On - Small games to create an interest in mathematics.
http://www.counton.org/magnet/

Java Kali - This geometry applet is similar to a kaleidoscope in the images it creates.
http://www.geom.uiuc.edu/java/Kali/program.html

The Metagrobologist - Small collection of math puzzles and oddities geared toward gifted 9- to 12-year-olds.
http://www.geocities.com/themetagrobologist/nav.htm

Brain Teasers and Math Puzzles - Interactive puzzles to challenge logic and mathematical skills. Immediate feedback with detailed solutions is provided.
http://www.syvum.com/teasers/

WisWeb - Applets provide an interactive way to learn about algebra and mathematics.
http://www.fi.uu.nl/wisweb/en/

Math4free - Offers math puzzles and comics.
http://www.math4free.net/

Primary Games - A collection of interactive math games.
http://www.primarygames.co.uk

Count Us In - Games designed to help children understand basic number concepts.
http://www.abc.net.au/countusin/default.htm

Dan's Math 4 Kids - Gives examples of ways that numbers occur in the world around us. Includes puzzles that concern numbers, geometry, speed rates, and logic.
http://www.dansmath.com/pages/danskids.html

Mudd Math Fun Facts - Learn some interesting facts about math.
http://www.math.hmc.edu/funfacts/

Figure This! Math Challenges for Families - Assortment of mathematical challenges based on real life situations.
http://www.figurethis.org/

Alien Tiles - Get the color pieces in the right spots to create certain patterns in cube.
http://www.alientiles.com/

Math-Kitecture - Be a master architect. Draft a floor plan using software as you learn math, or try other fun "architivities." Designed for middle school students.
http://www.math-kitecture.com

RekenWeb Games - Many elementary math related interactive tools. Building blocks, geometry, symmetry and patterns.
http://www.fi.uu.nl/rekenweb/en/welcome.xml

Cyberchase - Interactive games to help learn about using measurements, mazes, angles, and shapes.
http://pbskids.org/cyberchase/games.html

2 + 2 - Basic math skills software. Includes a free download, links, awards, and a guest book. [English, Polish, Italian]
http://www.funnymathforkids.com/