Chapter 18: “Same Content Different Designs” Activities and Their Impact on Prospective Mathematics Teachers' Professional Development: The Case of Nadine
As a new form of Teaching Research Group (TRG) activity, Same Content Different Designs (SCDD, or Tong Ke Yi Gou in Chinese) activities have gradually become popular among teacher preparation and professional development programs in Chinese mainland at the beginning of the 21st century. To explore their impact on the professional development of prospective mathematics teachers, we organized two SCDD activities before and during the educational field work of a group of prospective teachers in China. Data was collected through clinic interviews, classroom teaching observations and videotaping, and cross-referenced with teaching related documents and artifacts. A case analysis reveals the SCDD activities' impact on Nadine, one of the prospective teachers' professional development. Based on the activities and the results, we propose and discuss a model that characterizes the key components and stages of SCDD activities.