Data Collection and Analysis
Given the exproratory nature of this study,the case-study desigh (using multiple subjects), as specified by Bogden and Biklen (1982),was considered to be most appropriate. Specific details of the case-study methodology follow.Data was collected and analyzed in two phases of initial interest was whether preservice science teachers possess coherent conceptions/structures of their subiect matter specialty and pedagogy. This question was addressed primarily in phase I. Additional qestions proposed by this study were addressed in phase II.