This module uses the problem of modeling growth in a chambered nautilus shell to give the user experience with the concepts of polar coordinates and parametric curves.

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This application allows randomized Venn Diagram review and self-testing implemented in Flash.

This straightforward Java applet parses statements from propositional logic and displays their truth tables in a format consistent with most discrete math texts.

A **Developers' Area** article on the use of Java Sketchpad to construct and publish interactive Web pages.

Chemical Graph theory is used to model physical properties of molecules called alkanes. Java applets allow for interactive exploration of molecules. A student project and discussion of its application are included, along with spreadsheets of model data.

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

An **article** on the use of technology to stimulate mathematical thinking even by the least likely students