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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.

The curve traced out on a baseball by its seam has many symmetries. This article explores the class of closed spherical curves with the same symmetries, which we call generalized baseball curves.

This utility uses the free Flash player plug-in resident in most browsers to allow the user to plot parametrically defined surfaces in cylindrical coordinates. Many examples and directed exercises are included.
An extended module for students to explore the linear algebra concepts, especially the singular value decomposition, behind modern search engines
A Developer's Area column on Java for those coming from a teaching background who seek programming advice and those with a software development background who seek to develop an item of value to the teaching and learning communities.
A brief outline of policies for submission of articles to Loci.
A Biological ESTEEM module in the Ecology Category. This worksheet simulates the population growth of two interacting species.
This is the second in a series of Developers' Area articles on writing Java applets.

This article looks at several geometric, straightedge-and-compass constructions for trisecting a line segment, comparing them based on the numbers of lines or circles required for the construction.