Recreations

An extensive list of web resources for recreational math.

Profile and description of his mathematical games and puzzles.

Interactive java puzzles and activities in different mathematical topics.

Puzzles and problems connected with numbers using the digits 1-9.

Simulation for Lewis Carroll's pillow problem.

Interactive logical and mathematical puzzles with feedback and detailed solutions.

Celebrates math puzzles and mathematical recreations.

Collection of Java-based educational puzzles.

Fun, interactive brain teasers you can play anywhere.

A large and varied collection of puzzles by logicsmith Grant Fikes.

Educational software presents advanced mathematics to K-12 students in a game-oriented approach, using coloring and drawing techniques to illustrate concepts from graph theory and computer science.

Introduction to magic squares. Basic/C computer programs to generate odd squares. Calculates 8x8 squares with any given date on the first line.

The Chemical Casting Model (CCM) generation method is demonstrated with a Java Applet. Source code and description of algorithm included. (English/Japanese) [JRE required for Applet only].

An introduction, with algorithms for generating odd, and doubly even (4k) squares. References.

Java applet generates odd ordered squares, with options to transformations by rotations and reflections. Source code provided.

Try to put 8 queens on an 8x8 square such that the queens sit on prime numbers. Readers' solutions provided.

Joseph Myers and John Berglund found a polyhex that must be placed in two different ways in a tiling of a plane, such that one placement occurs twice as often as the other.

Tiling a square without cutting it into two.(Problem of the week 826, Spring 1997)

Polyform puzzle lessons for math educators to use with their students, including polyominoes, supertangrams, and polyarcs.

A list of constants with links to more detailed information.

Pictures of some concrete tilings.

With interactive demos using Geometer's Sketchpad (requires Macintosh).

A Java applet which shows interactive wallpaper patterns.

Organization that sponsors the Canadian Open Mathematics Challenge, the Euclid Contest, the Gauss Contest, with online workshop, problem archives, and other resources for students.

The Subtrust (BMOS) and Committee (BMOC) pages with past problems.

National contest for the selection of the Norway IMO team. Results, history and problems.

A problem solving competition for individual pupils in Scottish secondary and upper primary schools.

Training resources for the Putnam competition. Practice problems, notes on mathematical theories, and recommended reading.

Short introduction for beginners.

Weekly math challenge with past problem archives and solutions.

Number 153 can be found in the New Testament, where in the net Simon Peter drew from the Sea of Tiberias held 153 fishes. Interesting properties of number 153 are given here.

666, the number of the beast in the Book of Revelation prophecies in the Bible.

Probably no symbol of infinity in mathematics has evoked as much mystery, romanticism, misconception and human interest as the number and Greek letter of Pi. Interesting facts and trivia about Pi.

A Topica email list. Archives readable by anyone.

An analysis of its relation to Pi and a simulation by George Reese.

A text by Keith Tognetti, published as an Australian Mathematical Society Teaching Module. Available in Postscript, PDF or DVI-Format.

Middle school contests available to students in New Brunswick, with results and problem archive.

Graphical and text versions of this puzzle. Includes Background and solutions.

Billion digits of Pi for download. Search for birthday dates in Pi. Introduction to maths related to Pi. Simple description of how Pi is calculated.