In a way to connect his 6th grade history students to their class content beyond the classroom walls, Raj Singaravelu utilized the large erosion table in the Greenhouse to let his students explore the kind of soil Sumarians would have worked with to create irrigation for their planted crops. The initial investigation asked the students to describe the quality of the soil, to identify the components of the layers, and to propose possible designs which would allow water to be delivered to large fields of plants.