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In this activity on page 9 of the PDF, learners test how flavoring extracts move through the walls of a balloon.

This activity (on page 3 of the PDF under GPS: Animal Scent Activity) is a full inquiry investigation into animal behavior.

In this four-part activity, learners explore how the body works and the chemistry that happens inside living things.

In this matchmaking activity (on page 2 of the PDF under GPS: Animal Scent Activity), learners will each have a scented cotton ball taped to their shoulder. The scent (e.g.

This is an activity in which learners will find that they can detect differences in concentration better with their nose (smelling) than with their eyes (seeing).

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