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Learners create a model of a wetland to observe how it absorbs and filters water from the environment.

In this ecology activity (page 8 of the PDF), learners explore how to filter contaminated water using a variety of materials.

Water treatment on a large scale enables the supply of clean drinking water to communities.

In this geology activity learners build a "squeeze box," which allows them to compress layers of sediment. This is a great way to investigate folding and faulting in the Earth.

This activity models some of the ways natural processes, such as erosion and sediment pollution, affect Earth’s landscape.

Learners use beach profile data from a local beach or online data from Ocean City, Maryland to investigate coastal erosion and sediment transport.

Learners design their own experiment to explore the permeability of different materials such as soil, sand, gravel, and marbles.

Learners take a field trip along a local body of water and conduct a visual survey to discover information about local land use and water quality.