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Sniffing for a Billionth
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This is an activity (located on page 4 of the PDF under What's Nano? Activity) about size and scale.
The Nose Knows
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In this activity (2nd activity on the page), learners explore how the nose is responsible for part of the flavor we taste in food.
Delicious Smelling Chemistry
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In this activity, learners use household materials to investigate and explore their ability to smell an odor.