Students construct a still to turn seawater into drinking water. They estimate the cost of distilling it. They investigate ways to make the conversion more efficient. They track the source of their home drinking water and make a map of...

Students examine samples of water to determine its cleanliness. They visit a waste treatment plant and/or reservoir. Students explore what protects the water supply from contamination by chemical or organize pollution. They trace the...

Learners explore the concept that different waterways support different organisms. After completing experiments, students predict what life-forms exist in each waterway in their area. They research how humans impact the habitat of other...

Explore the microscopic organisms that live in the freshwater ponds with this video collection. These video clips feature unicellular organisms, from under the microscope, showing off their daily activities. Collection includes videos of...