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SENDing MORE MONEY in any base
(Mathematical Association of America, 2006)
One of the most significant conceptual jumps involved in algebra is the use
of letters (and other symbols) to represent numbers. One way to get students
used to this notion is via puzzles. This paper describes a ...
The convergence of difference boxes
(Mathematical Association of America, 2005)
We consider an elementary mathematical puzzle known as a "difference box" in terms of a discrete map from R⁴ to R⁴ or , canonically, from a subset of the first R² into itself. We identify the map's unique canonical fixed ...
Am I too fat? Bulimia as an epidemic
(Elsevier, 2003)
For at least the past ten years, eating disorders have had a major impact in the
physical and mental health of women, particularly young women. Anorexia and bulimia
nervosa are closely linked eating disorders. Anorexia ...