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See-Saw Support I remember when as a child I played with other children on a tilting board, variously called a "see-saw" or "teeter-totter." Pushing with our feet, we would alternately go up and down. Easy enough to do when we were both close to the same weight. This was where we learned the principle of the balance scale. When one end goes down, the other goes up. and it's the heavier end that goes down. That's the way it was on the see-saw. With an average first grader and a fifth...
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