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In this environmental science activity, learners research what is essential for plant life and the necessary components of soil to support plants.

In this laboratory experiment, learners explore how effectively different sunscreens protect yeast cells from damage caused by ultraviolet (UV) radiation.

In this activity, learners explore the concept of valve operation and how engineers have adapted valves for use in mechanical heart valve design.

Learners use engineering design principles to construct and test a fully solar-powered car. Solar car kits usually include a photovoltaic cell and motor; some include a chassis as well.

In this outdoor activity, learners design devices that will catch prey or gather plants.

In this field study, learners discover how to collect data in the field and how their efforts can help certain animals, specifically, amphibians.

In this highly physical outdoor activity, learners construct and compare experimental trail sections to select the best trail-construction technique for their site.