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Learners design their own experiment to explore the permeability of different materials such as soil, sand, gravel, and marbles.

Learners use engineering design principles to construct and test a fully solar-powered car. Solar car kits usually include a photovoltaic cell and motor; some include a chassis as well.

Learners design and create musical instruments from common objects; their challenge is to create an instrument that can make three different tones.