Examples of what pupils should know and be able to do
Probing questions
What is the minimum information you need to be able to find the circumference and area of a circle?
Give pupils some work that includes mistakes.
Ask them to identify and correct the mistakes.
How would you go about finding the area of a circle if you knew the circumference?
What if pupils find this a barrier?
Ensure that pupils understand that π is the ratio of the length of the circumference of a circle to its diameter.
Demonstrate an approximation to the area by cutting a circle into 16 sectors and forming an approximation to a rectangle to establish a visual approximation to πr².
Ensure that πr² is seen as π × r × r.
Give pupils some work that includes mistakes and ask them to correct them. Be specific about common mistakes.
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