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This activity provides a hands-on experience with a scale model, a relatively high viscosity fluid, and feeding behaviors.

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

Learners investigate the concept of humidity by using a dry and wet sponge as a model. They determine a model for 100% humidity, a sponge saturated with water.

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

Learners explore water adhesion and learn about why water molecules are more strongly attracted to some substances than others.

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