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Use geometry, a ruler, and a steady hand to create these amazing unfurling paper folds!

In this activity, learners take their own pulse and explore how heart rate is affected by various activities.

Learners will construct a model of a heart valve using a film canister, a piece of masking tape, and a piece of paper.

This is a hands-on activity that uses bread and household materials to grow mold. Learners collect dust from a room, wipe it on food, and contain it. One to seven days later, mold has grown.