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how can a bridge like that hold all those heavy coins i dont understand how that works
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The activity can be viewed at: Build the Best Paper Bridge
Question about Build the Best Paper Bridge activity
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Re: Question about Build the Best Paper Bridge activity
Creating the folds in the paper makes it so the weight of the coins is supported by the inch thick fold instead of the 1/1000th of an inch thickness. To understand this, look at the example given in the activity: it is like bending a ruler the thick way instead of the thin way.