Like a fresh canvas, stem cells can turn into almost anything. In a comprehensive lesson, high school biologists use clay to build a 3-D model of cell division and the processes that occur during the first 14 days of development. Also included is a detailed graphic organizer for taking notes about the important concepts and vocabulary related to stem cells. The procedure is very clear and easy to follow; your pupils will enjoy getting their hands dirty while learning about how they all came to be.