We look at cams and levers and how different movements can be achieved with their use. With Cardboard Cams they individually make a Cam toy using a pre made cardboard framework box, which they keep. For K’nex Cams they work in pairs to make a moving model using a cam. (Photo in Cross Curricular.) At the conclusion of the activity, each team makes a short presentation to the rest of the class about their model and its special features, and then the models are taken apart.