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In this activity (located on page 6 of the PDF), learners explore the ways people access water in their homes.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

In this quick activity (located on page 2 of the PDF under GPS Wetlands Activity), learners will model how wetlands act as natural filters for the environment.

Learners build models of sinkholes to gain an intuitive knowledge of their physical aspects.

In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.