A visual Pythagoras
A solution to the soma cube
A solution to the crackerbarrel puzzle
Visual problem solving postscripts
Koblitz Calculus 1998 edition (html)
Koblitz's Calculus I (1997 edition)
Koblitz and Wells Calculus 2
A solution to the somacube
more solutions to the somacube
Bruce McLean's Bouncing Ball
Mary Zervas's Hypocyloid
A movie player
Universal Maps on Trees (postscript)
Transactions AMS, 1999, A joint paper with J.B. Fugate
Open Maps on Knaster Continua (postscript)
Fundamenta Mathematica, 2000, A joint paper with J.B. Fugate and Shannon Schumann
The lattice of Knaster Continua
(joint work with J.B. Fugate and Shannon Schumann), presented at the First Conference on Continuum Theory at Puebla, Mexico 6/28-7/1, 2000. To appear in Topology Proceedings.
numerical methods worksheets
An interestering quadrilateral problem.
A folded Moebius Strip
A paint problem.
Peng Lou's researches.
A Polar problem.
A locus problem.