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In the Toilet
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This activity explores the basic workings of a siphon, which is the core technology that makes toilets work.
Convection Current
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In this activity, learners make their own heat waves in an aquarium.
Low-Tech Water Filter for High-Impact Clean
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In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.