| Math_is_Fun_Forum A discussion forum for K-12 math students and teachers, with a focus on learning and teaching math the fun way. |
| Mathforge News and breakthroughs in the mathematical sciences, including software, education and books. |
| Maths_is_Toothpaste Mathematics is useless on its own, it only has a function when used with something else (i.e. a toothbrush). An online discussion. |
| Maths-Education Email forum for those working in mathematics education to share ideas and experiences, and request information. |
| Mathstore_Electronic_Discussions A list of mailing lists compiled by LTSN. |
| Topica__Science/Mathematics Mathematics-related e-mail lists. |
| Undernet_Math Topica email list serving the users of the IRC channel #math on the Undernet, for discussion and challenging puzzles. |
| WebMath A mailing list for those interested in mathematics on the World Wide Web. |
| Yahoo_Groups___Erdos A group for proposing problems, sharing ideas, discussing areas of research and reviewing papers and books of interest. [Requires Yahoo! membership] |
| Yahoo_Groups___maththeorists Discussions relating to number and mathematics philosophy. |
| Yahoo_Groups_in_Mathematics Mailing lists and discussion groups (including former OneList and eGroups). |
| Yahoo_Groups__Math_For_Fun Focuses on solving challenging math problems. |
| Yahoo_Groups__Theory-edge Informal discussion of research in algorithmics, mathematics, and their applications. |
| Artlandia_SymmetryWorks Adobe Illustrator plug-in that automates creation of surface designs and ornaments based on seventeen wallpaper groups. On-line purchase. |
| Catalogue_of_Isohedral_Tilings From the article "One Corona is Enough for the Euclidean Plane" by Doris Schattschneider and Nikolai Dolbilin. |
| Chaos_Tiles This chaotic tiling consists of two equilateral pentagons, with angles (80, 160, 60, 140, 100) and (40, 200, 60, 100, 140). Sets are for sale. |
| The_14_Different_Types_of_Convex_Pentagons_that_Tile_the_Plane Graphics and references. |
| Discrete_Plane_Symmetry_Groups Web text by Ana Kozomara. |
| Escher_Web_Sketch Java applet drawing repeated patterns with selected symmetry. |
| Frieze_Patterns Definitions and images. |
| Gallery_of_Symmetric_Chaos Includes: Symmetric icons and fractals; Quilts and planar repeating patterns; Colored wallpaper patterns. |
| The_Geometry_Junkyard__Tilings A collection of links. |
| Grotesque_Geometry Andrew Crompton's tiling and tessellation images. |
| Hans_Kuiper Hans Kuiper's work. Tessellations and optical art. Also tessellation software with the 17 wallpaper groups. |
| Hop\'s_Escher_Tessellation_Tiles Escher-like tessellations. |
| Hyperbolic_Tessellations Explanations and graphics. |
| Investigating_Patterns__Symmetry_and_Tessellations Links to activities and other resources. |
| Java_Kali A program for drawing symmetrical patterns based on any of the 17 wallpaper groups, as well as several frieze and rosette groups. |
| Java_Penrose_Tiler A Java applet for experimenting with kites and darts. |
| KaleidoTile Software for Macintosh and SGI to create and manipulate tessellations of the sphere, Euclidean plane and hyperbolic plane, and to see how the Platonic solids are related to tessellations. |
| Landry_Art Art of Kenneth Landry. Tessellations, polyhedra and polyhedra decorated with tessellations. |
| Mike_Field University of Houston. Graphics and resources in symmetry and tiling. |
| Penrose_Tiles Links in the Geometry Junkyard. |
| The_Penrose_Tiling_at_Miami_University A summary of the history behind the Penrose tiling in the math department at Miami university. |
| Pentagons_that_Tile_the_Plane Known solutions and a new recipe. |
| Quasi-Periodic_Tilings Artist Eleni Mylonas uses tilings. |
| References_about_Tessellations Compiled by Doris Schattschneider, Moravian College. |
| Samantha\'s_Wallpaper_Page Wallpaper patterns and symmetry groups. |
| The_Seventeen_Wallpaper_Groups Examples in traditional Japanese patterns. |
| Squared_Squares_and_Squared_Rectangles Tilings of Squared Squares and Squared Rectangles, constructed using javascript. |
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