2nd Grade Builds Bridges

Last week, the 2nd graders researched different types of bridges, and were presented with a challenge to design a bridge out of straws and masking tape that would span 25 cm, and hold as much weight as possible. This week, they got to build their designs and test them.  The strongest bridge appeared to be the beam bridge (which had originally been designed as an arch, but ended up being revised during construction). The beam bridge held over 1000 grams of weight.

The students took turns building, photographing, supervising, and testing.  I have posted some of their pictures below.  They did a great job synergizing, and I love how every bridge was very different!

In addition to learning some bridge construction skills, they also learned how to add their iPad photos to Dropbox.  I’m happy to say that all of the photos below were taken by the 2nd graders.  (Maybe I’m out of the job as class photographer, now!)

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