Year 1 used playdough, card and rulers to measure the stability of different 3D shapes in partners during their DT lesson today. They looked at spheres, cubes, pyramids and cuboids and tried to measure the height at which these objects would roll down a piece of card. We compared the results in class and they were then set a challenge to create a small standing structure using the playdough and the knowledge of the 3D shapes they had investigated.