How did the earthquake happen?
Imagine that it is shortly after the San Francisco earthquake, and your class is a group of scientists who have been asked to explain to schoolchildren in the area why and how the earthquake happened. First, use this interactive feature from the Guardian Unlimited to learn about the science behind earthquakes. Then, using what you have learned, create a series of simple graphics to explain the relevant points from the feature for children; each graphic should include a few sentences of text to explain what the graphic shows. When you are done, assemble the graphics and try out your presentation on your younger brothers or sisters (or other family members or friends).
