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Plots the solution curves of a user-input two dimensional system of autonomous differential equations. It has a reasonable parser, flexibility, and speed.
CLICK ON "SYSTEMS OF ODES" IN LEFT PANEL TO BEGIN. The first thing done is to rewrite the second order equation as a first order system and then the applet traces the solution through time.
User can enter (constant) coefficients for a second order differential equation with cosine forcing function and see the graph of the solution.
This resource provides a visualization of the velocity and acceleration vectors of a "puck" moving around in the plane.

This is a Mathematica lab worksheet that leads students through an exercise in finding the volume of liquid in a cylindrical tank that is tilted at some angle from the horizontal.

Set eccentricity and watch the planet move around. Illustrates Kepler's second law by clearly showing how velocity varies at different points of an elliptical orbit.
Allows the user to "fire" projectiles on a 2D graph. User may adjust the initial velocity and angle, the mass of the projectile, and air resistance. Provides several languages.
Webpage describing how Kepler's Laws apply to binary stars, with supporting figures and equations.

Collection of worksheets for use with Sage, covering differentiation, graphing functions, line integrals, and optimization.

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