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A Biological ESTEEM module in the Sequence Alignment Category. These two worksheets implement a dynamic programming algorithm for pairwise sequence alignment.
A Developers' Area article on the use of Java Sketchpad to construct and publish interactive Web pages.
A mathlet to explore approximation of the definite integral by Riemann sums

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.

This applet allows the user to see regions of integration for double integrals in rectangular or polar coordinates. The applet uses classes from the article "Flash Tools for Developers: Parametric Curves on the Plane."

An article on the use of technology to stimulate mathematical thinking even by the least likely students

This mathlet simulates a predator-prey system of foxes and rabbits over time.
This Law-of-Large-Numbers applet and supporting activities is developed as part of the Statistics Online Computational Resource (SOCR).
This collection of animations, embedded within the html document in gif and quicktime formats, illustrate computation of volumes via integration for first or second semester calculus students.
A preparatory module for problem-solving in physics and calculus that covers systems of units, dimensional analysis, significant figures, estimation, and orders of magnitude