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In this activity, learners build a simple pinhole viewer. They use this apparatus to project images from a variety of light sources, including a candle, the Sun, and the Moon.

In this experiment, learners design and build a model room in a shoebox and furnish it with tiny furniture.

In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.

In this meteorology activity, learners construct simple devices to measure the direction and speed of wind.

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