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This is a collection of 29 Java applets for exploring arithmetic of vectors. Also included are the vector form of the equation of a plane, and other geometric uses of vectors.

This web page tells the history of the invention of the ENIAC computer. It was invented to calculate ballistic trajectories during World War II. The web site also includes an ENIAC simulator.
This is a collection of 23 instructional videos on multiple integrals. Each is a solution of a single problem on some topic.
Computes line integral along user-defined path in any of seven pre-defined vector fields.
Allows users to display both contour plots and surface plots of functions \(z=f(x,y)\).

Activity designed to teach: Understanding different ways of expressing area using integration. Concrete example of Area Corollary to Green's/Stokes' Theorem.

A free OS X application for exploring parametrized surfaces.It features draggable tangent lines and tangent planes; geodesics at any point, in any direction; solid or wireframe rendering; draggabl
A variety of information about minimal surfaces, including: research (papers and links to related sites); essays; a large library of graphics of minimal surfaces; software, images and movies.

These are handouts for both instructors and students for carrying out a change of variables.