What it teaches: This interactive tutorial teaches addition and subtraction of 2-dimensional vectors, resolution into x and y components, representation in polar and rectangular coordinates, and conversion between these coordinate systems. Here is a screen shot of the contents:
How it works: By double-clicking on a topic you jump to the screen associated with that topic. In each
screen there is text on the right side explaining some
concept and graphics
on the left illustrating the concept. Most topics have a 'try it yourself' section where you can
create your own examples. Here is a screen shot:
Where to now?