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Lub Dub: Make a Heart Valve
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Learners will construct a model of a heart valve using a film canister, a piece of masking tape, and a piece of paper.
Balloon Bugs
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In this activity, learners make balloon models of disease-causing bacteria.
Model Well
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In this quick activity about pollutants and groundwater (page 2 of PDF under Water Clean-up Activity), learners build a model well with a toilet paper tube.