Tenth graders collect and analyze soil samples and extrapolate the characteristics needed to support different types of plant life. They research different types of prairie soil and how it supports plant and animal life.

Students identify the soil types and textures, and locate the waterways in or near the towns of Lyons and Decatur, Nebraska. They analyze soil profile maps, and answer conclusion questions.

Third graders explore the sources of the various foods they eat. They examine how everyone is intricately connected to the ecosystems in which natural resources are produced. Students observe how the lives of people living in those...