I have a long running interest in mathematical visualization and its use in the classroom.
Mathlets and Java Applets
I have developed a number of
Java applets which help students visualize concepts
throughout the undergraduate curriculum. There are
applets for single variable calculus, multivariable calculus
and vector analysis, topology, and geometry.
Multivariable Calculus with Mathematica
I write and maintain a series of
Mathematica Notebooks which
are used by students in our engineering multivariable
calculus and vector analysis course, Math 2374.
Mathematics on the GeoWall
The GeoWall is a system which uses two projectors and
polarization to produce true three dimensional images.
As implied by its name, the GeoWall has been popular
in the Earth Sciences and is used by the Geology
department at the University of Minnesota in its
lab courses. I have created a number of
mathematical materials for the GeoWall, including
a sphere eversion, 3D views of topological surfaces, and
a GeoWall version of the Curved Spaces software
by Jeff Weeks.
Mathematical Stereograms
Single image stereograms (often known by the brand name Magic Eye) allow you to view an image in 3D by relaxing your eyes while staring at a picture. Recently a relative asked me to create a series of stereograms; while working on that project, I also created a few extra stereograms of surfaces featured in MathWorld.
Klein Bottle
(Read a description) 

Monkey Saddle
(Read a description) 

Seashell
(Read a description) 

Chair
(Read a description) 