PBS
Pbs Learning Media: Organic Farming: Conserving Top Soil
Against the backdrop of the devastating 1930's Dust Bowl, this video segment adapted from Interactive NOVA profiles an organic farmer and the techniques he uses to conserve topsoil.
Smithsonian Institution
Environmental Research Center: Forces of Change: Listening to the Prairie
A large collection of lessons on prairie agriculture for Pre-K to Grade 12, organized into grade level groups. They cover such topics as foods that come from agriculture, animal farming, soils, and environmental issues. These lessons on...