We have been VERY busy in Stingray, trying to release penguins that were 'trapped' in ice.  To find out how to release the penguin, we planned and carried out an investigation to find out how we could speed up how quickly ice cubes will melt.  Some of our skills were impressive, with pupils realising that they needed to start multiple parts of the investigation at the same time, and that if they wanted to encourage the ice to melt even more quickly, they needed to put more of the sand, sugar or salt on.  However, everyone still managed to ensure that their tests were fair!