In collaboration with Ed Turner. Essentially four scenes of the classic rod and paper clip experiment. Students need to say which paper clip would fall off last and give a reason why. The last p.p.slide I have mixed up the scenes, with the easiest last. I want to see which group (or individuals) are more likely to move on when stuck and then come back to the problem when the other scenes have been explained. Also scenes 2 and 3, without experimenting, I don't know the answer to. This is where we would discuss in class then agree by majority what we believe is the correct answer.