Learners study groundwater movement beneath the surface of the Earth. In this agriculture lesson, students experiment with how water moves through rock materials such as sand, gravel, and clay.

Students conduct experiments demonstrating soil erosion and the benefits of conservation practices. Working in groups, they use topsoil and sand in shallow boxes as models to examine the effects of water on soil and sand with and without...

In this environmental science fair project, students will build models of fields prepared by plow-based and no-till methods, and see which ones are best at retaining soil moisture and preventing surface runoff.

For students that have already been introduced to the water cycle, this lesson is intended as a logical follow-up. Students will learn about human impacts on the water cycle that create a pathway for pollutants beginning with urban...