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In this activity, learners capture and observe planaria, which are worms that eat tiny pond critters.

Learners place multiple M&M's in a plate of water to watch what happens as the candies dissolve.

In this activity (located on page 10 of the PDF), learners explore the properties of spraying and dripping water, while making art.

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

In this activity/demonstration, learners observe what happens when two ping pong balls are suspended in the air by a hair dryer. Use this activity to demonstrate how rain drops grow by coalescence.

In this nanoscience activity, learners discover that it's easy to pour water out of a regular-sized cup, but not out of a miniature cup.

This three-part activity consists of an activity that groups of learners develop themselves, a given procedure, and an optional demonstration.

In this activity, learners will explore how water affects marker on filter paper. Learners will use science process skills such as making observations and predictions as they explore color.

Learners are challenged to discover the relative densities of colored liquids to create a rainbow pattern in a test tube.

How many colors make black? Gather as many water soluble black markers as you can find.

Learners design their own experiment to determine which M&M color dissolves the fastest in water.

In this activity, learners observe color mixing and absorbency using colored tissue paper and spray bottles.

In this activity, learners are challenged to lift a floating ice cube out of a glass of water using just one end of a piece of string.

This activity gives caregivers and their children an opportunity to practice scientific ways of thinking that are developmentally appropriate for early learners.

In this activity, learners conduct three experiments to examine temperature, the different stages of the water cycle, and how convection creates wind.

In this activity, challenge learners to predict and investigate how many water drops they can fit on one penny.

In this outdoor activity/field trip, learners catch and observe water striders to explore their movement and feeding behaviors.

Visitors mix water and sodium bicarbonate (baking soda) in a large flask. They then add citric acid to the mixture and stopper the flask. The resulting reaction creates carbon dioxide gas.

In this quick activity, learners observe how salinity and temperature affect the density of water, to better understand the Great Ocean Conveyor.

In this activity, learners explore in what ways the shape of the land and the pull of gravity influence how water moves over Earth.