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In this activity, learners imitate the way vocal cords work by building a model from a plastic cup, rubber band, and a straw.

Learners will build a homemade pump using a balloon, a mason jar, and some straws.

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

By building a model of a lung and diaphragm, learners discover the function of various parts of the body's respiratory system.