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In this activity, learners create a cylindrical mirror to see themselves as others see them.

In this activity, learners build inexpensive kaleidoscopes using transparency paper and foil (instead of mirrors).

In this optics activity, learners make a simple telescope using two lenses and a cardboard tube. Learners construct the telescope and then calculate its magnification.

In this three-part activity, learners conduct simple experiments to see how light refracts and reflects, and how colors of light affect what we see.

Challenge popular misconceptions, learners explore how a mirror actually reflects an image in this activity.

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

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

In this activity, learners discover that it is difficult to trace a curve by using its reflection in a mirror. Use this activity to discuss how the brain works.

In this optics activity, learners build a spy tool to secretly view things over walls or around corners.