I set Year 4 a challenge for homework: To design a container that will keep a cup of tea hot. We are thinking about good thermal conductors and insulators in class at the moment. I was so impressed when several children not only designed but made their container too! We tested them in class today to see how well they worked. We found that Henry’s design, which used wall insulation, was the best insulator. The theory was: if it works for houses, it also works for tea! Great work everyone.DSCN2338blog