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In this activity, learners construct a device that projects images onto a surface, so they can trace landscapes and other sights.

In this activity, learners use the Sun's energy to cook marshmallows. Learners construct the solar oven out of simple everyday materials.

In this activity, learners practice drawing 3D structures in two dimensions. Learners draw cube stacks from five different points of view.

With a laser pointer and some household items, learners can create their own laser light show. They can explore diffuse reflection, refraction and diffraction.