In science classrooms, the epistemic practices of explanation building and argumentation often extend over multiple episodes of talk during a single lesson or across several lessons. Analyzing this kind of discourse requires a way to identify patterns that emerge over time to better understand student participation and how teachers support…

Integration of technology, social learning and scientific models offers pedagogical opportunities for science education. A particularly interesting area is thermal science, where students often struggle with abstract concepts, such as heat. In taking on this conceptual obstacle, we explore how hand-held infrared (IR) visualization technology can…