Have students defend their choices in a group discussion. Depending on the interests and the skill level of the class, an appropriate amount of information on the structure of mammals should be given. At least that bones are compression members and that muscles are tension members. You may even go so far as to discuss tendons and ligaments. Perhaps discuss how strength, locomotion, and balance are achieved.
Connections Make connections between the bone x-rays and the students own bodies.
Discuss the connection between balance in nature and balance as an aspect of aesthetics. Standard Safety Message Just before students do any studio work remind them of the safety precautions which are relevant to this particular activity. Drawing Bones Students should be directed to use the bones and x-rays as sources of inspiration, draw the bones they see, and add the missing bones, muscle and skin. Then have them imagine and draw the bones revealed by the x-rays. Further Development With a motivated group of students, have them go beyond bones to study muscle groups, tendons, veins, and the effect of all of these on the skin.