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In this activity on page 9 of the PDF, learners test how flavoring extracts move through the walls of a balloon.

In this simulation activity, learners act as parts of the circulatory system and discover how it serves as a transport system for food/nutrients, oxygen, carbon dioxide and waste.

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

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