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A mathlet for exploring reflected and refracted images
This article gives a brief account of the learning material to be found at the maths online website.

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.

A Biological ESTEEM module in the Phylogenetics Category. This worksheet simulates the molecular evolution of DNA sequences.

An article on Group Explorer, a system that uses graphical representations of groups to build intuition.

A mathlet to sketch a derivative function by hand or by recording slopes of tangent lines.

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 is a Developers' Area article about the JOMA wiki and about creating and using wikis in general.
This article highlights several new modules in the ESTEEM collection maintained by the BioQuest Curriculum Consortium.