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In this activity/demo about piezoelectricity, learners discover how some crystals produce electricity when squeezed.

Over $20 per group Ages 4 - adult 10 to 30 minutes
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In this activity, learners investigate how inkjet printers produce tiny, precise drops of ink.

$10 - $20 per group Ages 4 - adult 10 to 30 minutes
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In this activity (page 10), learners explore how molecules self-assemble according to forces of attraction and repulsion.

Over $20 per group Ages 11 - 14 45 to 60 minutes
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In this activity, learners use sieves with different-sized holes to sort balls by size.

Over $20 per group Ages 4 - adult 5 to 10 minutes