Smaller rocks come from the breakage and weathering of bedrock and larger rocks.
In grades 3-5, students should become adept at using magnifiers to inspect rock and soils. The point is not to classify rigorously, but to notice the variety of components in rock and soils. This lesson encourages students to investigate the formation, properties, and components of soil. They create their own soil, then conduct an experiment to see how it compares to other varieties of soil for growing plants. Websites Used Utah Science Homepage Windows to the Universe Motivation Begin this lesson by having a discussion with your students about what soil is and how they think it is formed.