William Polley: Mathematica Demonstrations

William Polley has programmed a simple IS-LM model into Mathematica:

Mathematica demonstrations, by William Polley:  ...I'm starting to contribute to the library of demonstrations. My first contribution is a simple Keynesian IS-LM model. I chose this for my first attempt as it was easy to code and could be widely used in classroom presentations. Granted, I don't make the IS-LM the centerpiece of my class, but it does have some value and students should know what it is.

If you teach macroeconomics, you might want to try it out. It requires the Mathematica version 6 player (free download). Here's a link to the demonstration. Here's a link to all the economics demonstrations. And this is what the interface of my IS-LM demonstration looks like...

Please let me know if you find it useful. I hope to do some more of these in the near future.

Anyone know of more classroom tools along these lines?