Models and modelling play a critical role in science education to engage students more fully in science practices. Few studies have investigated the nature of models and modelling in integrated STEM teacher education. This study examines pre-service science teachers' (PSTs) understanding of the nature of models and modelling in a STEM methods…

Despite the importance of evolution to understand biology, there is significant evidence that many biology teachers have difficulties to successfully teach this topic. The purpose of this study is to describe procedures by which a paper-and-pencil instrument to assess teachers' pedagogical content knowledge for evolution (PCK[subscript evo]) was…

Preparing teachers to teach science consistent with current reforms in science education is a daunting enterprise given a lack of high-quality science professional development (PD) adaptable across various contexts (Wilson 2013). This study examines the impact of a comprehensive professional development program on middle school teachers'…

Pedagogical content knowledge (PCK) has become a useful construct to examine science teacher learning. Yet, researchers conceptualize PCK development in different ways. The purpose of this longitudinal study was to use three analytic lenses to understand the development of three beginning biology teachers' PCK for teaching natural selection…

This paper reports a case study of four grade 10 physical sciences teachers' PCK about graphs of motion. We used three data collection strategies, namely teachers' written accounts, captured by the content representation (CoRe) tool, interviews and classroom observations. We conceptualised the PCK displayed in the CoRe tool and the interviews as…

There is a clear need for valid and reliable instrumentation that measures teacher knowledge. However, the process of investigating and making a case for instrument validity is not a simple undertaking; rather, it is a complex endeavor. This paper presents the empirical case of one aspect of such an instrument validation effort. The particular…

In this paper, we present a professional development/upgrading programme in science for early-years teachers and investigate its impact on the teachers' competencies in relation to their knowledge and teaching of science. The basic idea of the programme was to motivate the teachers by making them members of an action research group aimed at…

The implementation of educational reforms requires behavioral changes from the teachers involved. Theories on successful behavioral change prescribe the following conditions: teachers need to possess the necessary knowledge and skills, form strong positive intentions to perform the new behavior, and have a supporting environment for change.…