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In this activity (on pages 29-35), learners examine water pollution and filtration.

Water treatment on a large scale enables the supply of clean drinking water to communities.

Learners take on the role of environmental engineers as they design water filters.

In this creative roleplay activity, learners will explore the various processes of the water cycle using movement, sound, and props to aid in comprehension.

In this investigation learners explore the differences between, and interdependence of, living and nonliving elements in a water ecosystem.

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.

When it rains, water can collect on top of and seep into the ground. Water can also run downhill, carrying soil and pollution with it.

In this activity, learners use plastic water bottles, wood, and water to build an inexpensive and portable tool to demonstrate one atmosphere of pressure at sea level.

Learners gain an intuitive knowledge of the physical aspects of watersheds by creating their own watershed models.

In this activity about humans and space travel (page 1 of PDF), learners compare and contrast the behavior of a water-filled plastic bag, both outside and inside of a container of water.

In this group activity, learners consider environmental conditions—temperature, presence of water, atmosphere, sunlight, and chemical composition—on planets and moons in our solar system to determine

In this activity (page 59 of the PDF), learners spin and observe false eyelashes in jars of water (prepared at least 1 day ahead of time) to investigate the effects of different types of motion on the

In this activity, learners experience firsthand how marine animals' adaptive coloration camouflages them from prey.

In this activity, learners are invited to imagine the park of their dreams!