Although researchers have reported positive effects on teacher learning from observing published video, teachers' own video, and their colleagues' video, very few professional development programs have integrated all three types of video to improve teacher learning. In this study, we examined the affordances and challenges of the three types of…

In this study we described an action research project enacted by a veteran Kindergarten teacher (Sarah) in the context of a professional development program. Over the course of a year, Sarah collaborated with other teachers in a small group to investigate how to use "Science Talks" to promote student learning in Kindergarten classrooms. A…

Previous research has shown that questioning is a key strategy that facilitators use to promote discussion in Problem-Based Learning (PBL). Yet, there is a lack of detailed understanding on what questions facilitators ask and how those questions affect discussion. In this study we examined different types of questions that experienced facilitators…

In this study we measured changes in science teachers' conceptual science understanding (content knowledge) and pedagogical content knowledge (PCK) while participating in a problem-based learning (PBL) model of professional development. Teachers participated in a two-week long workshop followed by nine monthly meetings during one academic year…

Although there has been much debate about "what" teachers need to know about technology, less attention has been paid to "how" they are supposed to learn it. Teacher preparation programs need to go beyond merely training teachers in how to use specific software and hardware tools, and instead focus on developing an…