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This applet shows the path of a golf ball rolling on a putting green. You can choose to add the velocity, acceleration, and tangential and normal accelerations.
This project is aimed at bridging the gap between how vector calculus is taught by mathematicians and how it is used by scientists.

Simple learning unit with applets to study Cartesian, polar and oblique coordinates. Applets are accompanied by exercises and solutions.

Applet visualizes arbitrary change of variables in two dimensions.

Graph paramertic curves in rectangular as well as polar coordinates. Curves can be traced showing the direction of motion and the way a curve is traversed.

Euler was the first person to recognize that mixed second partial derivatives are equal (in general) -- except that he discussed differentials instead.
This applet is designed to build the intuition between the idea of a derivative being the slope of the line tangent to a curve and the idea of a derivative as a function symbolically computed from
Graphs of the brachistochrone curve, including an animation of a "race" along it and other curves, and much historical background.