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Each learner chews a piece of gum until it loses its flavor, and then leaves the gum to dry for several days.

This lesson is designed to serve as an introduction to the immune system. It can stand alone or it can lead into further studies of the immune system.

In this health, cooking, and math activity, learners explore nutrition and examine nutrition labels.

In this activity, learners investigate the olfactory system by conducting several experiments.

This guided inquiry three-part activity engages learners in thinking about the mechanism of natural selection by encouraging them to formulate questions that can be answered through scientific investi