This USGS Web site presents educational materials about "earth structure, earthquakes, plate tectonics, and earthquake preparedness." Teachers can search the up-to-date information by topic or by grade level (K-12). The site provides a PowerPoint presentation Earthquakes 101, which incorporates images and drawings to help educators easily explain earthquake processes. Users can take Virtual Field Trips to places such as the Calavaras Fault and the Kentucky River Fault Zone. With so many fun learning activities, teachers will certainly benefit by visiting this site.