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In this activity, learners explore chemistry and the microbial world by making their own sourdough starter and bread at home using only flour and water.

Many germs spread by our hands, and often times, people don't wash their hands well enough to get rid of germs.

Many common household cleaners are antimicrobials.

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.