Despite the importance of developing elementary science teachers' content knowledge for teaching (CKT), there are limited assessments that have been designed to measure the full breadth of their CKT at scale. Our overall research project addressed this gap by developing an online assessment to measure elementary preservice teachers' CKT about…

Research suggests that students tend to explain the origin of biological traits in terms of needs or purposes and/or as the direct product of genes, rather than as the outcome of evolutionary and developmental processes. We suggest that in order for students to be able to construct scientific explanations, it is important to clearly and explicitly…

One aspect of scientific inquiry that appears to be particularly challenging to learn is how explanatory models are developed and used in science. It is even more challenging to learn to teach through methods that engage young students in building and using explanatory models. In part, this is because to do so requires that teachers make real-time…

Although teacher educators have achieved some success in improving teachers' understanding of the nature of science (NOS), helping teachers teach NOS has proved a much greater challenge. Currently, there are few examples in the literature of teachers who effectively teach NOS, and fewer still that rely on student outcomes as a measure of teachers'…

Examines the role that students' science concepts play in promoting teachers' professional growth. Journals and portfolios showed that students' science knowledge served as discrepant events that evoked teachers' dissatisfaction with their own content knowledge and motivated them to reconsider their pedagogical practices. (Author/CCM)

Discusses three prospective elementary teachers' conceptions of teaching science and selected portions of their knowledge base in life science. Explores how these teachers' conceptions, along with their teaching actions, developed during the course of a teacher-education program. Contains 21 references. (Author/WRM)

Discusses three prospective secondary biology teachers' conceptions of teaching science and selected portions of their knowledge base in biology. Explores how these teachers' conceptions, along with their teaching actions, developed during the course of a teacher-education program. Contains 31 references. (Author/WRM)

Summarizes a complex study of a science-teacher-education program whose goal was to graduate teachers who held conceptual change conceptions of teaching science and were disposed to put hem into practice. Concludes that there are influences on prospective teachers from their content coursework that have significant implications for how they view…

Introduces an issue that details a complex study of a science-teacher-education program whose goal was to graduate teachers who held conceptual change conceptions of teaching science and were disposed to put them into practice. Presents a conceptual framework for science-teacher education, and describes the context and major questions of the…