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Group Visualization with Group Explorer

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

Derivative Plotter

A mathlet to sketch a derivative function by hand or by recording slopes of tangent lines.

The Trouble with von Koch Curves Built from \(n\)-gons

by Tamás Keleti and Elliot Paquette

Supplement to article in American Mathematical Monthly

Leslie Matrix for Age-structured Populations

A Biological ESTEEM module from the Ecology Category. This Excel workbook uses the Leslie Matrix Model for population projection of age-class or stage-class structured populations.

The JOMA Developers' Area Wiki

This is a Developers' Area article about the JOMA wiki and about creating and using wikis in general.

The Kuratowski Closure-Complement Problem

This interactive page allows readers to construct a Kuratowski 14-Set on the real line by selecting from among ten checkboxes, each representing a given set of real numbers.

Flash Tools for Developers: 3D Function Grapher

This Flash Forum article includes source code and modification instructions that will allow you to customize a grapher for surfaces in space.

Better Practices for Presenting Mathematics on the Web

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.

Editor's Notes, July, 2001

An introduction to Volume1, Issue 2

Parameterized Knots

This article discusses parameterized knots (polynomial and trigonometric) and includes an interactive gallery of selected knots and their equations.