Ethnograms are used to visualize data gathered from students' and teachers' talk in the classrooms of a secondary school in the UK. A sample of "talk data" is portrayed in three example ethnograms. The ethnograms transform non-visual data into the visual domain for the purpose of analysis using visualization and abstraction. Using…

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…

Slide shows presented with software such as PowerPoint or WordPerfect Presentations can trap instructors into bad teaching practices. Research on memory suggests that slide-show instruction can actually be less effective than traditional lecturing when the teacher uses a blackboard or overhead projector. The author proposes a model of classroom…