Year 5 have completed their Spring Term science topic, ‘Properties of Materials’. We finished with an investigation into which container would keep water coldest for the longest. Our containers were a plastic cup with a lid, a plastic cup without a lid, a compostable cup and a thermos. From this investigation, we found that a thermos was best at keeping the liquid the coldest. We measured accurately using a beaker and a thermometer and ensured that our investigation was fair.