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In this activity, learners use multiple thermometers, placed at different angles, and a lamp to investigate why some places on Earth's surface are much hotter than others.

Millions of organisms can live in and around a body of water.

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

In this outdoor, beach activity, learners use tennis balls, water balloons and other simple devices to investigate the movement of waves and currents off a sandy beach.

This display shows slow chemical reactions in colorful crystal formations known as Liesegang Rings. These reactions are similar to those forming the rings in agates.

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

How do scientists measure how clear or murky water in a lake is? How does water clarity (clearness) affect what lives in the lake?