Today we tested our latest engineering challenge.  What is the strongest paper bridge you can build using a single sheet of copy paper?  They were only allowed to use one sheet of copy paper.  The bridge had to be constructed on top of two textbooks.  Their bridge had to be freestanding.  They all did a great job.  But congratulations to Bella, Jack, Paige, and Nandini for the strongest bridge.  Their bridge held 19 crayons.