Although teachers' instruction has been extensively studied, there is a dearth of research investigating how teachers design lessons and integrate new information into their existing lessons. This study utilized a case study approach to examine how teachers engaged in a nanoscale science professional development experience integrated new science…

In order to improve the retention of science teachers, studies have focused on understanding the issues teachers encounter and identities they construct. Most studies examined the early years of teaching science. However, fewer studies of professional trajectory and identity examine the departure/dropout of mid-career and late-career science…

The Next Generation Science Standards call for changes in not only what is taught in elementary science but also how students engage in the learning experience to develop understanding of core disciplinary ideas. In this study we examined 5th-grade teachers' pedagogical content knowledge (PCK) for 1 particular core idea: the small particle model…

Young children need opportunities to engage in the practice of constructing scientific explanations in order to develop their own understanding of science content. To engage in this scientific practice, teachers need to provide young children with explicit instruction and scaffolding. However, many classroom teachers' knowledge and beliefs for how…