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

In this activity, learners explore how salt water freezes in comparison to fresh water.

This warm weather activity introduces learners to the impact trees have on blocking the sun's heat and reducing temperature on the Earth's surface.

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 conduct an experiment to explore how water flows up from a tree's roots to its leafy crown.

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

In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.

In this activity, learners observe the effect of transpiration as water is moved from the ground to the atmosphere.

In this activity, learners make a model of the hot water of a deep sea vent in the cold water of the ocean to learn about one of the ocean's most amazing and bizarre underwater habitats.

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

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

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

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.

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

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

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.

This is an activity (located on page 3 of PDF under Nasturtium Leaves Activity) about surface tension.