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A collection of Java applets for a number of topics.
A Mathematica manipulate showing the effect of herd immunity on smallpox transmission. Simple dynamic display of the result of changing the initial fraction of immunes.
A java applet plotting solutions of ODEs. There is a drop down menu for different solvers including Euler, Modified Euler, RK and Dormand-Prince.
A Mathematica demo showing the error behavior and construction of simple Runge-Kutta schemes for first order DE
A Java applet which enables the user to create the phase portrait for a 2D system of differential equations. Applet will also plot trajectories for given initial conditions and isoclines.
A presentation that gives background in epidemiology, and presents the basic SIR and SIS models.
The webpage produced by this URL shows all of the demonstrations pertaining to Newton's Law of Cooling that have been submitted to the Wolfram Demonstrations Project.

This activity begins by reviewing conversions between fractions and decimals with an emphasis on repeating decimals.

The Java applet provides graphical solutions of ordinary differential equations using a fourth-order Runge-Kutta method with constant step size.
This applet calculates symbolically the inverse Laplace Transform of quotients of polynomials with real-valued coefficients. The resulting inverse transform is then plotted.