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Learners construct an electricity-generating wind turbine out of a plastic bottle.

In this activity, learners construct their own small catapults using simple materials. Learners follow visual instructions to build their launching device.

Learners build a wind turbine and test it to see how much energy is created.

In this activity, learners sort different natural phenomena into categories (they occur on Earth, on the Moon, or on both), and then model how energy moves during a quake using spring toys.

This experiment is designed to illustrate how fluids, including water, have the ability to flow.

In this activity (on pages 20-23 of PDF), learners build a model of a power plant using simple materials.