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In this activity, learners will discover why there are holes in bread.

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

In this activity, learners visualize the differences in water density and relate this to the potential consequences of increased glacial melting.

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

Learners explore how the attractive forces between water molecules create surface tension and allow certain objects to float on the surface of water.

Over the course of several days, learners explore the property of water that helps plants move water from roots to leaves or gives paper towels the capacity to soak up water.

In this activity, learners act as water molecules and travel through parts of the water cycle to discover that it is more complex than just water moving from the ground to the atmosphere.

In this activity, learners create a biosphere in a baggie.

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

In this activity, learners practice the steps involved in a scientific investigation while learning why ice formations on land (not those on water) will cause a rise in sea level upon melting.