





An interdisciplinary Differential Geometry research team in the Dept of Mathematics and Statistics at UMass Amherst.
http://www.gang.umass.edu/ 
This archive is open for any geometer to publish new geometric models, or to browse this site for material to be used in education and research. These geometry models cover a broad range of mathematical topics from geometry, topology, and to some extent from numerics.
http://www.egmodels.de/ 
Freeaccess electronic journal about elementary Euclidean geometry.
http://forumgeom.fau.edu/ 
A discussion of rotation, levitation, wheels, and bodies of water. Classification of 'rotatopes' (cubes, spheres, and cylinders), and a Java applet to visualize projections and intersections of the shapes. Includes book reviews, a glossary, links, and a forum.
http://tetraspace.alkaline.org 
The world of higher dimensions in math, physics, history and culture. Books, games and links.
http://hyperspacefun.com 
Geometric model building courses to improve understanding of geometry, using a Matrix kit for sale on the site that can be used in order to create the models yourself.
http://www.handsonmath.com/ 
More than eighty paper model templates, ready to cut out and fold up, available to print out or download.
http://www.korthalsaltes.com/ 
Discusses double shell structured periodic systems, platonic spheres, molecular and crystal structures, and FlashSort algorithms.
http://www.neubert.net/ 







