Students estimate an addition problem, share their methods, discuss grouping nice numbers, and then do a problem using this method, then design a question showing how it uses the method.
In this practical task, students estimate, and then measure, the weight of two objects using a number of multi-link cubes, a balance scale and weights.
In this practical task, students use their understanding of the link between capacity and volume to make cardboard containers that hold 250ml and 500ml of water.
In this practical task, students make different shapes with four multi-link cubes, draw them, identify the smallest perimeter, and explain what happens to the area.