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In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients.

This is an activity (located on page 3 of the PDF under Water Clean-up Activity) about the use of reduction agents to decontaminate ground water.

In this outdoor activity, learners simulate an oil spill using popcorn (both oil and popcorn float on water), and estimate the spill's impact on the environment.

In this lab, learners experience how dolphins and other echolocating animals use their senses to locate and identify objects without using their sense of sight.

In this three-part activity, learners explore how waves are formed and why some waves are bigger than others. First, learners observe waves of water in a pan generated by an electric fan.

April showers bring May flowers, but what do coastal storms bring?

In this activity about the circulatory system and space travel (on page 38 of the PDF), learners use water balloons to simulate the effects of gravity and microgravity on fluid distribution in the bod

In this activity, learners model ancient lunar impacts using water balloons.

This hands-on experiment will provide learners with an understanding of the issues that surround environmental cleanup.

In this activity (on page 14 of PDF), learners use a pan full of flour and some rocks to create a moonscape.

This online interactive has three activities in the NanoLab (press the upper right button): Build, Zoom, and Transform.

In this activity about the human heart (on page 5 of the PDF), learners work in teams to simulate the volume of blood moved through the circulatory system by transferring liquid into--and through--a s

In this online interactive simulation, learners will add different salts to water and then watch the salts dissolve and achieve a dynamic equilibrium with solid precipitate.

Learners will explore the scientific mystery behind a disappearing group of trees by examining data and attempting to explain the decline.

In this online interactive simulation, learners will test the pH of liquids like coffee, spit, and soap to determine whether each is acidic, basic, or neutral.

In this activity, learners investigate the food, water, and space needs of common livestock animals.

In this math lesson (on Page 13), learners predict and simulate the likelihood of an event occurring.

This experiment allows learners to experience a small scale "epidemic," demonstrating the ease with which disease organisms are spread, and enables learners to determine the originator of the "epidemi

In this activity related to climate change, learners create and explore topographical maps as a means of studying sea level rise.

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.