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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.

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.

An article about using Excel to illustrate two concepts associated with attribute acceptance sampling plans: Calculating the probability of lot acceptance, and designing a plan that satisfies certain consumer's and producer's risks.
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.

This teaching module explores the time and distance of a bouncing ball and leads to a study of the geometric series.

In this article, a very simple model is used to describe and generate many types of seashell shapes.
A module about motion in one, two, and three dimensions and the process of changing the point (and direction) of reference from which the motion is viewed
A Biological ESTEEM module in the Ecology Category. This worksheet simulates the population growth of two interacting species.
This collection of pdf files use the PascGalois software for guided explorations in the context of Number Theory course.
This article uses a game, called Google-opoly, played on a small directed graph to describe and model the Google PageRank algorithm.