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First graders frequently study the way matter changes, starting with water. After all, it’s pretty amazing when you think about it, how water can go from solid ice to liquid to gas.
But it’s even more fun when you mix these revelations with a classic kid food—popcorn. Nowadays it’s easy to make the stuff in the microwave and watch the kernels bang on the sides of the paper bag; it’s just that it’s really hard to see what’s happening inside.
So here’s a return to old fashioned days … as long as you can find a pot that’s newfangled enough to have a clear lid.