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In this activity, learners observe what would happen to their bodies if they went to outer space without a space suit.

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.

Although we may not admit it, all humans fart or pass some gas. In this activity, learners make their own model to mimic food passing through intestines and discover what releases gas.

Most of the time, we don't have to think about breathing. In fact, you're probably breathing right now without thinking about it!