Geometry Center
Center for the computation and visualization of geometric structures

The Shape of Space
Links to Resource Materials

Animation of a Sphere Eversion
Turning a sphere inside out
From the Optiverse video

Another Sphere Eversion
From the Geometry Center Video "Outside In"

The KnotPlot Site
See pretty pictures of knots and download a free computer program to make your own.

Make your own non-periodic tiling
and related Copyright Infringement!