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

Learners investigate how the temperature of water affects its density.

In this activity, learners explore healthy choices related to the liquids they drink. The importance of water and milk as essential nutrients for a healthy body is the focus of the experience.

In this activity, learners explore the forces at work in water. Learners experiment to find out what happens to pepper in water when they touch it with bar soap and liquid detergent.

This creative lesson plan provides a visual way for learners to gain knowledge about the finite amount of fresh water on Earth and encourages the discussion of the various ways to conserve this resour

This creative lesson plan provides a visual way for learners to gain knowledge about the finite amount of fresh water on Earth and encourages the discussion of the various ways to conserve this resour

In this quick activity, learners observe how the added sugar in a can of soda affects its density and thus, its ability to float in water.

This activity explores the basic workings of a siphon, which is the core technology that makes toilets work.

In this introductory demonstration and activity, learners are introduced to the concept of density as they explore a rock and a wooden block in water.

Learners model the ocean currents that carry hot water from the tropics to northern latitudes.

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 create models of erosion and floods and learn to recognize both in their environment.

This quick demonstration (on page 11 of PDF) allows learners to understand why scientists think water ice could remain frozen in always-dark craters at the poles of the Moon.

Perform this classic inertia demonstration to illustrate the transfer of potential energy to kinetic energy.

In this laboratory activity, learners use a simple procedure to bait oomycetes from water and/ or soil and then examine these fungus-like organisms with the microscope to see how they look.

Learners will see that changing the shape of an object, like a clay ball, that is more dense than water, can affect whether the object will sink or float.

In this activity, learners investigate diffusion by creating underwater "fireworks" using food coloring, oil and water.

Learners see that a can of regular cola sinks while a can of diet cola floats. As a demonstration, bubble wrap is taped to the can of regular cola to make it float.

In this activity, learners explore how light and dark colored objects absorb the Sun's radiations at different rates.

Learners observe and conduct experiments demonstrating the different properties of hot and cold materials.