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In this activity, learners get a closer look at the shape of a drop of water and a drop of oil. Learners first drip water onto wax paper and examine the shape of separate drops from a side view.

Water on Earth is in lakes, the ocean, rivers, underground, and frozen glaciers.

Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

In this simulation activity, learners observe what can happen when ocean waves churn up water and oil from an oil spill.

In this activity, learners add food coloring to hot and cold water in order to see how fluids at different temperatures move around in convection currents.

Some bugs can walk on the surface of a lake, stream, river, pond or ocean.

In this simulation, learners explore how ocean currents spread all kinds of pollution—including oil spills, sewage, pesticides and factory waste—far beyond where the pollution originates.

No glue is needed for learners of any age to become marshmallow architects or engineers.

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

In this outdoor activity/field trip, learners investigate organisms that live along the ocean's rocky coast.