Adopting new instructional materials is an important way to support reform in science education, but implementation can be challenging and complex. Therefore, we conducted a contrasting case study of two middle schools implementing new curricular materials. We conducted semi-structured interviews with teachers and leaders and collected…

This study investigated the modalities of science teaching practice and students' pedagogic subject positioning through the linguistic features of science classroom discourse and the discursive interaction. For this purpose, this study sought to develop a methodology for classroom discourse analysis, the TMARC (Triangular Model of Analyzing…

Helping students better understand how scientists reason and argue to draw scientific conclusions has long been viewed as a critical component of scientific literacy, thus remains a central goal of science instruction. However, differences of opinion persist regarding the nature of scientific reasoning, argumentation, and discovery. Accordingly,…

Models and modeling are a major issue in science studies and in science education. In addressing such an issue, we first propose an epistemological discussion based on the works of Cartwright (1983, 1999), Fleck (1935/1979), and Hacking (1983). This leads us to emphasize the transitions between the abstract and the concrete in the modeling…

Preservice elementary teachers face many challenges in learning how to teach science effectively, such as engaging students in science, organizing instruction, and developing a productive learning community. This paper reports on several iterative cycles of design-based research aimed at fostering preservice teachers' principled reasoning around…

Researchers are becoming aware of the influence of students' presuppositions in directing their construction of science concepts. When these are entrenched and drastically nonscientific, they predispose the children to alternative explanatory frameworks that are inhibiting, especially in a knowledge domain such as genetics. In this study, we…

Teachers required to use an Elementary Science Study (ESS) unit during student teaching tended to use more of the techniques advocated by ESS in their own classes one year later than did teachers allowed to plan their own approach during student teaching. (AL)

Research on the relationship between teaching strategies and student outcomes supports the use of inductive/indirect teaching strategies. Research shows that this can be achieved through the analysis of model lessons with a systematic observation instrument. (MLH)

Describes a case study of an experienced provocateur-teacher in which the teacher's theory for science learning and teaching during teacher-student interactions was inferred from classroom observations, teacher-student discourse, and stimulated recall interviews. The teacher's instructional moves were interrelated with the components of his…