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Learners make a refrigerator that works without electricity. The pot-in-pot refrigerator works by evaporation: a layer of sand is placed between two terra cotta pots and thoroughly soaked with water.

Learners work in pairs to design, construct, and test a device that exhibits positive, neutral, and negative buoyancy. They test a number of different objects in water to see if they sink or float.

In this activity, learners will model the mechanical weathering and erosion of rocks in a stream or river.

In this activity about dinosaurs and survival, learners use scrap materials to create a miniature dinosaur habitat that includes a food source, water source, and shelter.

Learners build models of sinkholes to gain an intuitive knowledge of their physical aspects.

Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.