We have had a few weeks to work on our bridges and Friday was the day that we put them to the test. Students are able to work on the STEM cart after they finish their work. It is completely optional, but very much loved! The first challenge we had was to use any material and build a bridge that would support a cut of 20 pennies. All but 1 bridge held the weight. Some even held easily 46 pennies. I think we might have some future Civil Engineers in the making!