We now have a Science club for the Year 5 and 6s. The children predicted that if we pierced a bag of water with a sharpened pencil, the water would all leak out. In fact, if you do it right, the polymers of the bag’s plastic will re-seal around the pencil, and your counters will stay dry.  The children were amazed by the results. This got them thinking about the chemical compositions that make up everyday items.