Ever heard of rocks exploding in a campfire? Can it really happen, and how dangerous is it? What happens if you spill molten metal on concrete? Today we will look at how and why concrete and rocks spall during a fire.

Can you dance like an animal? In this great video for preschoolers and toddlers, you can watch animals dance across your screen while learning animal sounds and some animal motions. This song would make a great brain break or dance break...