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This stand-alone Shockwave program simulates bombs falling on a city via two methods (rudimentary guidance system versus uniformly random), and students are asked to apply data analysis to determine which simulation method is which.

A tribute to one of our authors, who died suddenly and unexpectedly while his second JOMA contribution was in preparation.

An article in which the focus-locus, focus-directrix, and cone-slicing descriptions of ellipses are related by way of the space-time geometry of special relativity.
A Biological ESTEEM module in the Genetics Category. This workbook performs six-frame translation on a short user-input nucleotide sequence and highlights the position of stop codons.

An article on Group Explorer, a system that uses graphical representations of groups to build intuition.

This article presents a fresh look at an age-old calculus optimization problem, the 'box problem.' (Also includes a Student Module condensed from the article.)

A mathlet to sketch a derivative function by hand or by recording slopes of tangent lines.
A forum for educators interested in developing mathematics classroom material using Adobe Flash.

Geometry Playground (v1.3) is a free Java application for doing "ruler and compass" constructions in both Euclidean, Spherical, Projective, Hyperbolic, Toroidal, Manhattan and Conical geometries. Its purpose is to help users develop a familiarity with various conceptualizations of these geometries.