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1. My partner and I used the sense of sight by looking at the ruler. When we saw the other person let go, that was when we started to catch the ruler. I caught the ruler at 9 centimeters.
2. To do the sense of hearing, we closed our eyes and when one partner was about to drop the ruler, they would say,"3,2,1 Go!" and the other partner would catch the ruler. This worked out well, because