Draw a picture of a CPU, share your ideas with another student and update your drawing. Discuss what features and why the students have drawn them.
Look up a diagram of a CPU and then compare it with yours, edit it, add the extra features. Discuss what you have learnt, feedback to the group.
Look through the CPU notes and videos to learn more about the CPU, your teacher may lead this as a class or you may independently study it.
Find out some interesting facts about Von Neumann, the best one, as voted by the class wins a lollipop.