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This note introduces a new wiki devoted to "Better Practices for Presenting Mathematics on the Web." This wiki is an outgrowth of a workshop with the same name held July 15-21, 2007 in Washington, DC.
An introduction to Volume1, Issue 2
A collection of GeoGebra applets and activities for exploring the properties of reflections, rotations, translations and glide reflections in the plane.
This Biological ESTEEM module in the Botany Category allows scientists to collect data from specimens, insert the measurements into a spatially explicit L-system package, and visually compare to the computer generated 3D image with such specimens.
A mathlet that allows the user to input a sequence of 0's and 1's of length 20 and then tests the sequence for randomness using three different tests.
An interactive module to study numerical and graphical solutions of differential equations in first-semester calculus.
This applet and corresponding activity represent a general demonstration of the effects of the Central Limit Theorem. It is part of the Statistics Online Computational Resource (SOCR).
This module, based on Mathwright Microworld technology, allows linear algebra students to visualize linear transformations of the form Ax = y, where A is a 2 by 2 matrix.

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.