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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.

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.

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.

In this activity, learners explore the process of condensation.

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

Learners observe a flask with a balloon attached over the mouth and inverted inside the flask.

In this quick SciGirls activity (page 1 of the PDF under SciGirls Activity: Doghouse Design), learners will be introduced to the concept of thermal conductivity.

In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.