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In this activity, learners explore atoms as the smallest building blocks of matter. With adult help, learners start by dividing play dough in half, over and over again.

Learners build models to learn about the special cells and structures that plants use to move water from their roots up through the stems and leaves.

Learners work in teams to design and build solar water heating devices that mimic those used in residences to capture energy in the form of solar radiation and convert it to thermal energy.

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