Triplehom.com (Popularity: )

Updated collection of triple homonyms in English.
Category: Science\Social Sciences\Linguistics\Languages

Magic Squares, Magic Stars and Other Patterns (Popularity: )

Pages on magic squares, magic stars (a lot of original material) and miscellaneous number patterns. ...
Category: Science\Math\Recreations\Magic Square

Mathguide (Popularity: )

A mathematics-related, one-stop website for interactive lessons, puzzles, educational issues, terminology, help, projects and lessons.
Category: Science\Math\Education

Geography Action! Rivers 2001 (Popularity: )

A collection of river conservation activities and educational tools from National Geographic, aimed at the ...
Category: Science\Environment\Water Resources\Education

MathCamp (Popularity: )

MathCamp is a classroom-focused mathematics resource for teachers on the elementary, middle and high school ...
Category: Science\Math\Education\Events

Pentomino Puzzle Software (Popularity: )

Pentomino based puzzle game lets children solve and create geometric puzzles. Win32 software, download free ...
Category: Science\Math\Recreations\Polyominoes

The World of Escher (Popularity: )

The web site to explore the great M.C. Escher artworks. Each image has commentary and ...
Category: Science\Math\Geometry\Sculpture and Art

Rocks For Kids (Popularity: )

About Rocks & Minerals written for kids with Links to kid-friendly rock information on the ...
Category: Science\Earth Sciences\Geology\Rocks and Minerals

Okavango (Popularity: )

Track cheetahs, pangolins, lechwe, and other wild wonders through the untamed habitat of Botswana¹s Okavango ...
Category: Science\Social Sciences\Geography\Organizations

Hungarian Lessons / Magyar leckék (Popularity: )

Hungarian lessons with chatroom, message board and e-mail support. Learn Hungarian with sound files, tests, ...
Category: Science\Social Sciences\Linguistics\Languages

Brain Teasers and Maths Puzzles (Popularity: )

Interactive logical and mathematical puzzles with feedback and detailed solutions.
Category: Science\Math\Recreations\Games and Puzzles

Steve and Susan's Puzzles (Popularity: )

Handmade wooden Pentomino and other puzzles; books.
Category: Science\Math\Recreations\Polyominoes

Mathschallenge.net (Popularity: )

A website dedicated to the puzzling world of mathematics and computer programming.
Category: Science\Math\Recreations\Games and Puzzles

Sir Roger Penrose (Popularity: )

A article about him and his interests and contributions to recreational mathematics.
Category: Science\Math\Recreations

The Enigmatic World of Philip Carter (Popularity: )

Collection of brain teasers from the author of IQ books.
Category: Science\Math\Recreations\Games and Puzzles

International High IQ Society (Popularity: )

Professional free online IQ tests; you can choose between Flash and HTML version. Membership possible.
Category: Science\Social Sciences\Psychology\Intelligence

Agates R Us (Popularity: )

Polished & rough agates from Lake Superior. Gifts, lapidary equipment and information source.
Category: Science\Earth Sciences\Geology\Rocks and Minerals

Physics Lecture Demonstrations, a Compilation (Popularity: )

Lecture demonstrations for physics courses, compiled and annotated by Dr. Donald Simanek. Reads like a ...
Category: Science\Physics\Education\Demonstrations

Narcissistic Numbers (Popularity: )

Those that are representable, in some way, by mathematically manipulating the digits of the numbers ...
Category: Science\Math\Recreations

Joyner, David (Popularity: )

US Naval Academy, Annapolis. Groups, representation theory, Lie algebras, Harmonic analysis, the Langlands philosophy, error-correcting ...
Category: Science\Math\Algebra\People