As a class we discussed the terms ‘sink’ and ‘float’. We then thought about what objects are able to float and considered reasons why they were able to float. Using a ball of plasticine we moulded different shapes then tested which ones were able to float. We ensured it was a fair test by using the same amount of plasticine for each test. We made a ball, sausage, flat shape and cup like shape. Both the ball and sausage shapes sunk. The flat shape was able to float for a short time. We discovered the cup like shape was able to float without sinking!