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In this activity, learners discover that they can create a lens from a water drop. Learners test their lens by looking at words or pictures.

In this activity about light, learners explore how water can refract light and change the way they see things.

In this activity about light and refraction, learners make a lens and magnifying glass by filling a bowl with water.

In this activity, learners create a water prism to break light into the seven colors of the rainbow.

In this optics activity, learners make a lens and explore how the eye manipulates the light that enters it.

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

In this activity, learners construct a device that allows them to look over ledges or around corners.

In this optics activity, learners examine how a transparent material such as glass or water can actually reflect light better than any mirror.

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 data collection and analysis activity, learners evaluate fish physiology and ecology using vision research data from Dr.