Take a look at United States Geological Survey's extensive science resources for K-12 teachers. Divided by grade level, these include lesson plans, activities, multimedia resources, and background information.
From BBC Bitesize, learn about the formation of fossils and the fossil record.
Idaho Geology
The Idaho Geological Survey is "the special public service and research agency at the University of Idaho mandated by law to collect and disseminate geologic and mineral data for the state." There are connections to Idaho maps and geology-related links.
Idaho Mining Association provides links to information about the mining industry both inside and outside of Idaho.
Geological Scales
The Geologic Time Scale from the U.S. Geological Survey is drawn to scale so you can compare the relative lengths of geologic time divisions.
This scale is geared toward kids, from the Children's Museum of Indianapolis.
More For Teachers
Science4Fun has sections that highlight Plate Tectonics, Rocks, Minerals, Erosion, and Volcanoes.