American Geosciences Institute
American Geosciences Institute: Earth Science Week: What's Down There?
Students build a model to learn about the cycle of erosion and deposition by water and wind which deposits layer upon layer of rock, soil, and organic material to the surface.
Vision Learning
Uniformitarianism and Recycling
This site explains the historical development of James Hutton's principle of uniformitarianism. It contrasts nonscientific explanations with Hutton's ideas.