This STEM challenge was to design and build a barrel with clothespins, an empty toilet paper roll, 2 rubber bands, cardboard scraps, yarn, and a pair of scissors, that will hold water the longest period of time without leaking. While they ultimately all leaked, the craftsmanship and level of group-effort was priceless and beautiful. A majority of the children would like to revisit the challenge and tweak their barrels with what they have learned from the coopers.
