Here is a complete lesson on Pythagoras' theorem with included assessment opportunities and printable differentiated worksheets on the IWB. Extension tasks using Pythagoras to find perimeters and areas of shapes too. There is a quality activity which I printed out where pupils have to role 2 dice to select the base and height of a right angled triangle then use the information to calculate the hypotenuse. I have included teacher hints on the slides which need deleting out because there are a lot of things that need clicking or pulling out. Enjoy!