An excellent lesson plan on Pythagoras Theorem. Starter on square numbers up to 15. Introduction on Pythagoras Theorem. How to work out the length of hypotenuse. Introduce the Pythagoras theorem formula. Also, work out other lengths of right angle triangle using Pythagoras Theorem. Work out the length of hypotenuse and answers provided on whiteboard. Worksheet on Pythagoras Theorem questions. Plenary on Pythagoras Theorem using word problem.