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An interactive module to study numerical and graphical solutions of differential equations in first-semester calculus.
This Law-of-Large-Numbers applet and supporting activities is developed as part of the Statistics Online Computational Resource (SOCR).
This collection of animations, embedded within the html document in gif and quicktime formats, illustrate computation of volumes via integration for first or second semester calculus students.

A tribute to one of our authors, who died suddenly and unexpectedly while his second JOMA contribution was in preparation.

An article in which the focus-locus, focus-directrix, and cone-slicing descriptions of ellipses are related by way of the space-time geometry of special relativity.

These are designed as supplements to a modern algebra course. They are designed to help students visualize many of the important concepts from a first semester undergraduate abstract algebra course.

This utility uses the free Flash player plug-in resident in most browsers to allow the user to graph a surface of the form z = f(x,y) on a customized scale and dynamically rotate the three-dimensional picture.
This applet allows the user to test a graph for planarity by simply dragging the nodes around until the graph's edges don't cross. Fixed exercises and an interface for drawing your own graph are given.

Parting shots from the outgoing editor.

A mathlet to construct an antiderivative by accumulating area under the graph of a function.