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In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon.

Learners will build a lung model to understand how their lungs and diaphragm work to make them breathe.

In this environmental health activity, learners investigate their breathing and pulse rates, and learn how these measurements are affected by physical activity.

In this activity (on page 1), learners role play as atoms to explore how atoms can be rearranged to make different materials.

In this activity (page 26 of the PDF), learners make observations, formulate hypotheses and design a controlled experiment, based on the reaction of carbon dioxide with calcium hydroxide.