Students explain that when a beam of light is reflected from its surface, it changes direction. In this virtual science experiment lesson plan, students complete an activity that requires them to investigate how flat mirrors reflect...

Students explain that mirrors reflect light. They examine how when a beam of light is reflected from a surface, its direction changes.

What colors do you see in a bubble? Why do you see colors in a bubble? Use this site to find out the answer to these questions with this easy experiment.

Children can look around corners with this homemade periscope. Great instructions at this Exploratorium site on how to build a periscope.

This animation depicts the path of light to each person's eye. Different people are sighting in different directions; yet each person is sighting at the same image location. In this animation the image location is the intersection point...