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

This fun activity uses simple materials such as milk cartons and mirrors to introduce the ideas of optics and visual perception.

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