PBS
Breaking it Down
After challenging themselves to correctly choose the form of erosion and length of time required for a given landform to develop, earth science class members model mechanical and chemical weathering with various lab demonstrations over...
Curated OER
Sediment Sleuths
Are you looking for a good, solid lesson on sedimentary rocks? This one, produced by the Illinois State Museum, is just such a lesson. Middle schoolers identify common rocks and minerals by analyzing sediments from local water sources....