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In this activity, learners explore the different salinities of various sources of water by taste-testing.

In this activity, learners use simple materials to create giant bubbles.

Learners conduct a "blind" taste-test of several types of enhanced or fitness water drinking water that has commercially added substances like vitamins, sugars, or herbs.

In this activity, learners make their own heat waves in an aquarium.

Many people get water from a source deep underground, called groundwater.

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.

In this activity, learners will make fish cutouts that propel through the water with the help of surface tension.

This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

In this quick activity (located on page 2 of the PDF under GPS Wetlands Activity), learners will model how wetlands act as natural filters for the environment.

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 use found natural materials to create a water haven for bees and other insects.

As a group, learners consider sources of water pollution to understand where pollution starts and where it ends up.

In this activity, learners observe the hydrologic cycle in action as water evaporates and condenses to form rain right before their eyes.

Where rainwater goes after the rain stops? And why there are rivers and lakes in some parts of the land but not in others?

In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.

This is an activity about turbidity, or the amount of sediment suspended in water.

Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water.

Lakes, streams and other freshwater bodies are a habitat for lots of living things, big and small.

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