Step 5 Objective
Calculate the perimeter and area of simple compound shapes that can be split into rectangles.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Probing questions
Why is it a good idea to split this shape into rectangles to find the area?
How do you go about calculating the dimensions of the rectangles in the compound shape?
Form a compound shape by pushing together two rectangles. Compare the areas and perimeters of the rectangles with those of the compound shape.
What has changed and why? What happens if you join the rectangles in a different way? Why?