Examples of what pupils should know and be able to do
Probing questions
What do you look for when deciding whether a problem can be solved using Pythagoras' theorem?
How do you decide which side is the hypotenuse?
If a is the length of the hypotenuse, why is it incorrect to use a² + b² = c²?
What if pupils find this a barrier?
Focus on the strategies that pupils need to identify the hypotenuse of a right-angled triangle.
Devise a card-matching activity with sets of cards giving the problem in words, the diagram and the steps to the solution.
Include inaccurate diagrams and solutions.