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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 explore how engineering has developed various means to remove impurities from water.

In this four-part activity, learners explore light and sound through a variety of hands-on investigations.

In this activity, learners interact with whale artifacts such as replicas of skulls, bones, teeth, and baleen (hair-like plates that form a feeding filter).