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A Biological ESTEEM module in the Epidemiology Category. This worksheet implements an SIR (Susceptible/ Infected/ Resistant) model of epidemiology for vector-borne diseases.

In this article we present a collaborative environment of open source tools around the dynamic mathematics software GeoGebra that gives educators the freedom to create new and modify existing materials in an online community.

A mathlet for constructing graphs of functions of a complex variable, using color as the fourth dimension.
A collection of GeoGebra applets and activities for exploring the properties of reflections, rotations, translations and glide reflections in the plane.
This Biological ESTEEM module in the Developmental Biology Category includes linear cellular automata and 2D cellular automata. Users can choose from a set of popular rules or define their own.
This applet performs traditional elementary row operations keeping track of the entire process. It also allows fraction, integer, or decimal entries and preserves these types throughout the row reduction process.
A module examining a model for the performance of world-class sprinters.
These applets and educational materials demonstrate the shapes and parameters for several commonly used discrete and continuous probability distributions. It is part of the Statistics Online Computational Resource (SOCR).
This Mathwright Microworld allows a student to look at systems of linear equations as (1) simultaneous linear equations, (2) vector equations, and (3) matrix equations.
An article that shows how to implement the Lanchester Combat Model in an interactive Excel spreadsheet