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In this two-part activity, learners work in pairs to examine the four basic stages of a turbine engine.

In this activity, learners shrink the scale of the vast solar system to the size of their neighborhood.

In this earth science activity (page 14 of the PDF), learners use layers of closed-cell foam to create their own model of the mid-ocean ridge in order to simulate seafloor spreading.

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

When it rains, water can collect on top of and seep into the ground. Water can also run downhill, carrying soil and pollution with it.