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This collection of mathlets comprise a companion for modeling assignments (primarily for calculus) designed to give students hands-on experience describing motion as a combination of basic functions.
This applet supplements the authors' "Gutter Problem" material, but can be used to generally study properties and forms of quadratic functions, both analytically and graphically.
An article that shows how visual representations using diagrams and kinetigrams can play an essential role in intuiting some mathematical objects that can be used to model some pharmacokinetic processes

The curve traced out on a baseball by its seam has many symmetries. This article explores the class of closed spherical curves with the same symmetries, which we call generalized baseball curves.

This article describes an authoring tool that translates a simple, TeX-like input syntax into Content MathML. The MathML can then be copied and pasted into web pages.

This utility uses the free Flash player plug-in resident in most browsers to allow the user to plot parametrically defined surfaces in cylindrical coordinates. Many examples and directed exercises are included.

A module to study turns at high speed, where frictional effects are not sufficient to maintain circular motion

In this article, a very simple model is used to describe and generate many types of seashell shapes.
This collection of pdf files consists of fully developed lesson plans for using Pascal's Triangle and the PascGalois software for a standard course in Mathematics of Elementary Education.
A Biological ESTEEM module in the Ecology Category. This worksheet simulates the population growth of two interacting species.