Curated OER
Sensational Soil
Fourth and fifth graders explore soil by taking a simulated field trip under the earth. They go to an Internet site that runs a simulation which charges them with finding a source of pollution that could destroy all of Earth's soil, and...
Curated OER
How is Gold Found in the Ground?
Fourth graders participate in a series of activities designed to simulate mining for gold. They pan for "gold" and create a safe tunnel.