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HINGES - An Illustration of Gauss-Jordan Reduction

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

Center of Mass

This mathlet computes the center of mass (centroid) of a lamina of uniform density.

Mean and Median Applet

Investigate properties of the mean and median of a distribution, and then test your knowledge.

Deme 2.0

A Biological ESTEEM module in the Genetics Category. This worksheet simulates the population genetics of a single gene with two alleles.

Designing Attribute Acceptance Sampling Plans

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.

Linear Transformations of Points

This interactive Geogebra applet allows exploration of a linear transformation in terms of images of a set of points. The Geogebra interface allows dragging of points and vectors to make for versatile explorations of basic linear algebra ideas. Suggested activities are included.

Pairwise Alignment

A Biological ESTEEM module in the Sequence Alignment Category. These two worksheets implement a dynamic programming algorithm for pairwise sequence alignment.