The second project is a story board for a remake of a "classic" film is described in "Complex Function Graphs". The most recent version has been completed on May 16, 1995. This document appears as one of the samples for a proposed totally electronic journal.

A research project in progress is the self-linking of curves on the 3-sphere. This includes some small animations in Fnord and illustrations and a small film using another program, fourd. Only an mpeg player is necessary to show these animations.

On a Macintosh equipped with Geometer's Sketchpad, it is possible to view the movies connected with "Monge and Desargues, Identified".

A new project is a "sketchpad" for spherical geometry, with interactive demonstrations in Fnord.

Another project comes from linear algebra. This short treatment of the geometry of least squares uses computer generated standard illustrations in traditional textbook mode, although the images are in a format that can be transmitted electronically. There is also a prototype interactive demonstration using Fnord.

There is also a "traditional" electronic publication on the volume of an n-dimensional ball, written after a morning session for high-school students visiting the Geometry Center. The text is written in TeX, converted, along with the illustration to postscript, so that it can be read using a postscript viewer or printed out.

A recent project, in collaboration with Davide Cervone at the Geometry Center, involves a study of the Klein bottle rotating in four-dimensional space. The film clips in this section are generated by the program FrontStage designed by Davide Cervone for use in conjunction with Geomview.

Another project connected with a long-standing effort to understand tight embeddings of surfaces is a module for constructing examples of arbitrarily high topological complexity. The accompanying figures were designed using the Fnord program for a survey article in collaboration with Wolfgang Kühnel.

In addition to the properly mathematical projects, there is a long-standing and extensive effort to study the life and works of Edwin Abbott Abbott. The text of his famous book, Flatland is available here as well.

In progress is a partially updated 1990 article concerning *Flatland* and
Hypergraphics.

Here, for use in talks about interactive computer laboratories in calculus of several variables, is a simulation of a session using the program Fnord. For a version using only black and white images, choose this.