Curated OER
Perkin' Through the Pores
Fourth graders explore different levels of soil. In this soil instructional activity, 4th graders investigate the amount water that can be absorbed by topsoil, subsoil, and bedrock.
Curated OER
Porosity
Middle schoolers predict and test the porosity of sediments with particles of different sizes. They name two objects that they think has pores. Students define the term porosity and pores. They comprehend that an aquifer is the porous...