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

In this activity exploring liquid dynamics, learners design and build a clay channel in a tray of water and then see what happens when food coloring and liquid soap are added to the mix.

In this activity, learners will make fish cutouts that propel through the water with the help of surface tension.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

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

This activity (located on page 8 of the PDF) introduces learners to the concept of Non-point Source Pollution--what happens when rain washes garbage and other pollutants into rivers and lakes.

In this outdoor activity/field trip, learners explore an aquatic site such as a pond, lake, stream, river or seashore to find and investigate plants and animals that live in water.

Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water.

In this activity, learners use the design thinking process to design and build their own aqueduct, or water bridge.

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.