A parabolic mirror toy demonstrates how concave mirrors objects reflect light and produce a realistic image at their focal point. This resource probably doesn't explain any more than the printed insert that accompanies such an apparatus...

The concepts of refraction and reflection gel with your physical science class during this colorful exploration. Shining lasers through Petri-dish-shaped gelatin desserts, they will notice how the light travels and bounces off the sides....

In a hands-on learning activity, pupils read about and recreate the experience of Harriet Jacobs, author of one of the most famous slave narratives of all time in which she describes her years of hiding from her master in a...