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In this activity, learners smell bottles containing bee pheromone molecules (or herb/spice extracts as a substitute). Bees release these molecules to send messages to each other.

Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.

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

This is an activity (located on page 4 of the PDF under What's Nano? Activity) about size and scale.

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

In this activity (2nd activity on the page), learners explore how the nose is responsible for part of the flavor we taste in food.

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

In this activity, learners use household materials to investigate and explore their ability to smell an odor.