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In this optics activity, learners use glass and water to demonstrate total internal reflection (TIR).

In this demonstration (18th on the page), learners conduct a simple test to explore how the cornea refracts light, which is further bent by the eye lens through a process known as accommodation.

In this four-part activity, learners explore light and sound through a variety of hands-on investigations.

In this activity, learners use gelatin as a lens to investigate the properties of laser light.

In this activity, learners make optical fibers out of strips of gelatin.

In this activity related to microbes, learners use water drops and hand lenses to begin the exploration of magnification. This activity also introduces learners to the microscope.

In this activity, learners make prisms from gelatin. Learners then shine light through the prisms and discover what happens. This activity introduces learners to the idea of refraction.

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