Describes a study focusing on the role of chalkboards in classroom science talk. Discusses similarities of the overall structure of the whole-class conversation with scientific laboratory talk. Suggests implications for design of technologies that allow larger numbers of students to participate in whole-class sense-making conversations.…

Describes a two-year design experiment in which sixth and seventh grade students designed hypermedia documents to be used by their classmates. Consensual patterns of students beliefs emerged. Presents information on how teachers assisted with the longitudinal transitions in students' critical standards for judging research questions and evaluating…