8. What do the bridge experiment data tell us?

Second graders completed fair tests to see how many weights a beam bridge, an arch bridge, and a deep beam bridge could hold.  

A fair test would:
1.  Use the same weights.
2.  Have weights gently placed on the bridge.
3.  Put the weights over the span of the bridge, not the abutments.

Based on the results, they had to decide which bridge was the strongest and which was the weakest!  Check out some of their work!

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