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Learners compare the weight of equal volumes of wax, water, and clay. Learners discover that since the wax weighs less than an equal volume of water, it is less dense than water and will float.

Learners create hard water by mixing Epsom salt and water. Then they compare what happens when soap solution is mixed with hard water and regular water.

In this physics activity (page 10 of the PDF), learners will explore how energy from moving water can be used.

Learners add different liquids (water, salt water, alcohol, and detergent solution) to water and observe the different ways the different liquids combine with water.

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

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

In a class demonstration, learners observe a simple water cycle model to better understand its role in pollutant transport.

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

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.

Learners design their own experiment to investigate whether the temperature of the surrounding water affects the rate at which the colored coating dissolves from an M&M.

In this activity, learners investigate whether having sugar already dissolved in water affects the speed of dissolving and the movement of sugar and color through the water.

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

In this activity, learners build models of atoms and molecules, then consider their role in different phases of matter, density, and mixtures and solutions.

In this physics activity, learners experiment with the attractive and repulsive power of magnets.

In this activity (located on page 2), learners will construct tiny model geysers out of film canisters, warm water, and antacid seltzer tablets.

In this activity, learners examine photo images of Earth taken from space, and attempt to identify and explain some of our planet's geological features.

Learners carefully pour vegetable oil, water, and corn syrup in any order into a cup and discover that regardless of the order they are poured, the liquids arrange themselves in layers the same way.

In this activity, learners combine two substances (plaster of Paris and water) to make a cast of an object's imprint in clay.

In this fun hands-on activity, learners whip up a batch of cyber-dough (play dough) using math for measurements.

Bones are stiff, which helps us lift heavy things and walk around, but they are also somewhat flexible, which lets them bend slightly.