Fun with Science

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Place an empty glass bottle in a saucepan of water with a balloon stretched over the top. Turn on the heat, and watch the balloon inflate as the air inside the bottle expands. Or pour about 1/2 cup of vinegar into a bottle and shake one spoonful of baking soda into a balloon. Put the balloon over the top of the bottle, and when the soda falls into the vinegar, it will produce CO2, inflating the balloon.

Sink your teeth into a large hunk of modeling clay, pushing the clay up to gum level and as far back in the mouth as comfortable (being careful, of course, not to push it too far). Remove the clay from your mouth and pour prepared plaster of Paris into the mold. When it is hardened and you peel the clay away, you have a model of your teeth!

Draw a small (four- by two-inch) American flag on a piece of white paper. Make the stripes black and bright blue, the background for the stars bright yellow, and the stars black. Stare at the center of the flag for a minute or so. Then look at a blank wall, and a red, white, and blue flag will appear before your eyes.