How To Make Your Own Volcano

Here's a document on how to make your own volcano. Here's the video on the same topic (youtube.com).

Power points for Plate Tectonics

• Evidence for Continental Drift

• Tectonic Plates and Plate Boundaries

Power Point web site

http://science.pppst.com/index.html

A Guide to the Cosmos

Using The New York Times' words, this slide show of words and images are "dazzling and true"