You may think our world, the earth, is standing still. But it isn’t. The earth is spinning around and around, like a huge top. Push a stick through a ball of clay and then twirl the stick. The clay…
Have you ever noticed a change in the \”whistle” a train makes as it rushes by? If you stand by the tracks while the train is passing, the sound gets higher and then lower as the train goes by you. …
When you’re sick, your mother or father calls a doctor. Long ago, when Indian children became sick, their mothers or fathers called a medicine man. The medicine man didn’t have pills or shots, but…
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