Curated OER
Stratigraphy -- Layers of Time in the Earth
Students are introduced to the process of stratification. Using the internet, they read about the Richard Beene archeological site near San Antonio. Using a map, they color code the different layers present at this site and answer...
Curated OER
Environment: Erosion Boxes
Fourth graders discover how the processes of erosion and weathering alter the physical characteristics of the environment. In a student log,they record the various types of erosion and list ways to prevent it. Using clear, plastic...