For this activity you will need to print out the drawings and mount them on stiff card. You will find the drawing in the Photographs section of the Media Index labelled "Joint Model". You will also need some brass paper fasteners and some rubber bands. The rubber bands will represent muscles.
1) Raise and lower the hand on the model arm by pulling on the rubber bands one at a time. Which muscles raise the arm and which lower it? Check by feeling your own arm muscles to see if you were right.
2) Now make the model head nod backwards and forwards. Which muscles pull the head down? Which muscles pull it back up again?
3) Now try to make a model leg with working muscles.
