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In this activity, learners model the gravitational fields of planets on a flexible surface.

In this project, students explore how levers work, by making a puppet with moving limbs.

In this activity, learners build edible models of Jupiter and Earth to compare their sizes and illustrate the planets' internal layers.

In this activity, learners make bridges using an oil-based modeling clay (plasticene). The instructions include discussion questions for both before and after bridge building.

In this design challenge activity, learners build a tower that can support a tennis ball at least 18 inches off the ground while withstanding the wind from a fan.

In this activity, learners build water-propelled engines from soft drink cans.