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This article explores the symmetry method in elementary differential equations, which uses the invariance of the equation under certain transformations to create a coordinate system in which the equation greatly simplifies.

This ESTEEM module in the Biometrics Category is a collection of workbooks has tools for linear regression, polynomial fit, and chi-square analysis to test whether a data set is in Hardy-Weinberg Equilibrium.

A module for exploring the best linear fit to a set of two-dimensional data

This Flash Forum article consists of two components: an applet that provides a gallery of visually compelling parametric families, and a general parametric families plotter.
This collection of resources is designed to supplement a modern algebra course. They are designed to help students visualize many of the important concepts from a first semester undergraduate abstract algebra course.
A collection of mathematics applets with full documentation and source code for beginning users of Adobe Flash. This collection is part of the MathDL Flash Forum.
A Developers' Area article on reusability and its benefits, particularly with regard to Java applets.
These Java applets allow students to explore three classic probability problems: (1) the Birthday Problem, (2) the Poker Problem, and (3) the Buffon Needle problem.

Events in our world are often modeled with differential equations. This article develops numerical solvers for ODEs. Interactive applets explore topics including slope fields and numerically solving definite integrals and differential equations.

An article about an online system for providing education and assessment for precalculus, which can substitute for routine problems given in homework and as exam questions