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This utility uses the free Flash player plug-in resident in most browsers to allow the user to graph a surface of the form z = f(x,y) on a customized scale and dynamically rotate the three-dimensional picture.
Some introductory remarks from the new Editor of Loci.

An article discussing the use of technology in abstract analysis, real analysis, and geometry.

A Biological ESTEEM module in the Genetics Category. This worksheet simulates the population genetics of a single gene with two alleles.
This article illustrates the use of calculus, differential equations, and statistics in the analysis of enzyme kinetics.
We highlight five pages written in XHTML with links to SVG files that produce animations illustrating calculus concepts such as the sign of the derivative, inflection points, conic sections, area between two curves, and multivariable functions.

One of the contributing editors introduces the Developers' Area.

A Biological ESTEEM module in the Sequence Alignment Category. These two worksheets implement a dynamic programming algorithm for pairwise sequence alignment.
This interactive, browser-based game provides students with a great activity for the "reform calculus" problem of finding "function-derivative pairs" based only on graphs. Several variations are available.

Users toss a virtual coin or die to investigate the law of averages. The outcomes of multiple experiments (consisting of 10000 tosses each) can be graphed on the same plot to facilitate visualization of trends. An activity is provided to facilitate thinking about the law of averages with the applet.