Many children love to explore new ideas and create things, so
turning your kitchen into a mini science lab is sure to be a
hit. Don't worry. You won't need any special equipment, and
these projects make a minimum of mess. The first experiment
explores sound. Find four identical glasses. Ideally, these
should be clear, so you can see how much liquid is in each
glass. Next fill each glass with varying amounts of water. Now,
line the glasses up so that the levels of water are in ascending
order. Gently tap each glass with a spoon. The children should
be able to detect the different tones due to the amount of water
the sound waves travel through. The next experiment launders
money, the legal way. Gather several dingy (DIN-jee) pennies.
Combine salt and vinegar in a glass, and put the pennies in to
soak. After a few minutes, remove them and rub with a wash
cloth. Presto--shiny pennies. If you'd like them to be a little
brighter, try increasing the amount of salt in the vinegar.
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