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This module, based on Mathwright Microworld technology, allows linear algebra students to visualize linear transformations of the form Ax = y, where A is a 2 by 2 matrix.
This collection of pdf files use the PascGalois software for guided explorations in the context of Number Theory course.
An article that explores visual patterns in Pascal triangles with entries determined by arithmetic in finite groups
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.
Content classification for mathematics education
In this applet, a user fills in a grid to create a distribution of numbers. The applet displays the size of the standard deviation and the position of the mean in the distribution. An activity is provided to facilitate the use of the applet to investigate standard deviation.

An article about an interactive environment for viewing dynamically the geometry of elementary row operations.

A Biological ESTEEM module in the Genetics Category. This workbook simulates a linkage analysis problem with up to four alleles.
This mathlet computes the center of mass (centroid) of a lamina of uniform density.
This suite of five interactive applets (written with GeoGebra) allows exploration of definitions and theorems commonly presented in first-year analysis courses. Topics include sequence convergence, continuity at a point, the Mean Value theorem, Taylor series, and Riemann sums. Included with each applet is a pair of activities: one for becoming comfortable using the applet, and one for using the applet to explore the associated topic in depth.