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A Biological ESTEEM module in the Evolution Category. These two workbooks model the evolution of phage resistance in a bacterial population under two alternative hypotheses.
A module intended to introduce the use of mathematical models in population dynamics from a biological perspective and to give substance to an elementary differential equations course
A welcome message from MAA's Director of Publications & Electronic Services

This interactive Geogebra applet allows students to experiment with 2 by 2 matrices and the corresponding geometric transformations of the real plane. A list of student activities is provided.

A Biological ESTEEM module in the Phylogenetics Category. This worksheet simulates the molecular evolution of DNA sequences.
This is the second in a series of Developers' Area articles on writing Java applets.

Table of Contents for Loci Volume 1, July 2008 through December 2009.

The dihedral group D8 (sometimes called D4), the group of symmetries of the square, is one of the simplest finite groups. In these three mathlets, we will explore different aspects of this symmetry group to get a better understanding of its structure.
This paper describes a Flash-based OSSLET that we have used at the United States Military Academy with first year calculus students as a vehicle for motivating vectors, matrices, and linear and affine transformations.

A Developers' Area article on the construction and collection of quality mathlets.