How does decreasing the length of the dog pen by 1m aect the area of the
dog pen? What happens to the area when you decrease the length by 2m?
3m? Using diagrams, words and numbers, show how you arrived at your
responses.
5. In general, how does changing the length of any rectangle change its
area? Use diagrams, numbers and words to justify your response.
MATHEMATICS PERFORMANCE TASKS 98 Christie Wainwright