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In this activity about ramps, learners explore and measure the rate at which spherical objects roll down a ramp.

Learners model the ocean currents that carry hot water from the tropics to northern latitudes.

Learners build a simple solar oven from a shoebox, black construction paper, and aluminum foil. Over the course of a few hours, the oven heats up water enough to brew tea.

This activity models the necessary balance of creating power and cleaning up its associated waste. Learners participate in a game where they attempt to move forward toward a goal.