Summary Free experimentation with soil. One station investigates the components of different soil types. The other station investigates how soil is moved by water. Science content Earth/Space: Landforms, Erosion (3) Earth/Space: Rock cycle, Earth Materials, Natural resources (5) Activities in this lesson Soil sieving Erosion and Stream flow Resource The New Teaching Elementary Science Procedure I used Wasserman's Play-Debrief-Replay model (see the New Teaching Elementary Science resource) for this lesson. Set up two stations: soil sieving and soil erosion. Students spend 20 minutes on one station, making notes on what they find, then switch to the other station. Grades taught Gr 1 Gr 2 Gr 3