This utility uses the free Flash player plug-in resident in most browsers to allow the user to plot a parametrically defined surface on a customized scale and dynamically rotate the three-dimensional picture.

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Third in a series of **Developers' Area** articles on constructing Java applets for use in mathematics courses, with emphasis on displaying intersecting surface graphs in three dimensions

by Tamás Keleti and Elliot Paquette

Supplement to article in American Mathematical Monthly

A Biological ESTEEM module in the Developmental Biology Category. This Excel workbook illustrates a number of allometric equations in animal growth.

This is an article describing the author's experiences using the Duke Connected Curriculum materials

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.

This applet encourages students to use the mathematics of the motion of a projectile to choose angle and velocity necessary to hit a roving target. The source code is available from the link within the Sharing Area of the Flash Forum.

Marden's Theorem concerns the relative positions of the roots of a cubic polynomial and those of its derivative. This article gives a proof of Marden's theorem, along with dynamic geometry animations and some of the history of the result.

A **Developers' Area** article about reuse and interoperability of mathematical tools.