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Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.

In this activity, learners use a model for how fishing affects marine life populations, and will construct explanations for one of the reasons why fish populations are declining.

In this activity, learners build one or more edible coral polyps and place them together to form a colony.

Learners design their own experiment to investigate how pollution diffuses through ground material.

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