I enjoyed seeing some responses from class on a perimeter question. There was a shape and its perimeter was given and then students had to find the perimeter of a larger shape made up of the smaller shape.
Students spent time finding the length and width of the smaller shape and then using it to find the larger shape. It wasn’t badly answered, students managed to understand how they would go about answering it and this method worked but the perimeter was 15cm so one of the lengths was 2.5cm. None of the students looked at the edges of the larger shape and saw how they related to the smaller shape. Perimeter