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Smelly Balloons
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In this activity, learners sniff out scents hidden in balloons! After investigating, learners discover we sometimes can use another sense (smell) to detect things too small to see.
Invisible Sunblock
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In this activity, learners find out why some mineral sunblock rubs in clear. Learners compare nano and non-nano sunblocks and discover how particle size affects visibility.
Exploring Size: Scented Balloons
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In this activity, learners use their sense of smell to explore the world on the nanoscale.
Rainbow Film
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In this activity, learners use clear nail polish to create a beautiful iridescent pattern on black paper. Learners discover that a thin film creates iridescent, rainbow colors.