Does studying about the nature(s) of science contribute to a prospective teachers' effectiveness as a science teacher? This research grew out of a course created by a science educator and historian of science who believed prospective teachers needed more complex understandings of the cultural wars surrounding science. The research team consisted of five prospective teachers who participated in the course as well as the two instructors. This paper describes the experience of participating in the course from both perspectives. We argue that studying the cultural wars over science contributes to prospective teachers' professional growth as much because the course elicits tacit beliefs about school science as it introduces more complex understandings of science. We found that prospective teachers' tacit beliefs about school science were their greatest barrier to developing more complex understandings about the nature(s) of science. We contend that willingness to grapple with complexity and developing a professional identity by locating oneself in the conversations about the nature(s) of science are better criteria for determining the professional growth of prospective teachers than knowledge measures. Finally, we argue that prospective teachers should be viewed as professionals who are responsible for finding their own voice, making their own decisions, and considering the consequences of their beliefs on their practice. This study raises questions critical to teacher education programs for prospective teachers and teacher‐educators alike. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 895–915, 2000

Abstract“You be the examiner!” is an online approach to providing students with immediate, readily accessible, and nonthreatening feedback on their understanding of key biochemical concepts. The feedback aims to affirm correct understanding and, where further study appears necessary, direct the student to the relevant sections of their textbook and/or lecturer‐provided study notes. Rather than providing model answers to previous examination questions, “You be the examiner” asks the students to evaluate typical “student” answers to such questions. Instead of a single “correct” answer, students encounter a range of answers that they must assess for accuracy and appropriateness.