In this article, I propose that at the juncture of disciplines, the mind is involved in at least 3 cognitive activities: overcoming internal monologism or monodisciplinarity, attaining provisional integration, and questioning the integration as necessarily partial. This claim is supported by interview data I collected primarily from faculty…

Proposes that fifth-graders' emergent and sustained controversy in a unit on endangered species from a "Fostering Communities of Learners" classroom exemplifies productive disciplinary engagement. Shows how engagement was supported by the students' and teacher's treatment, by students having authority to resolve the issue while being…

Presents a case study of third graders' development of place value conceptions to illustrate an approach for documenting students' mathematical development in the social context of the elementary school classroom. Documents the evolution of communal mathematical practices in which students participate and the development of individual…

Evaluated the "ThinkerTools Inquiry Curriculum," a computer-enhanced, middle school science curriculum, to determine the impact of including the Reflective Assessment Process. Found that students' performance improved significantly on both physics and inquiry assessments. Controlled comparison revealed that students' learning was greatly…

Describes science curriculum for elementary children which incorporated Vygotskian approach to development of students' ability to engage in persistent, systematic inquiry. Discusses three factors: (1) instruction began by introducing ideas that are central and general to the discipline; (2) students invented and adapted cultural tools for…

Evaluated the PREG conceptual model of human question asking. Found the model was sufficient as it accounted for nearly all of the questions produced by students, and was discriminating in that it could identify the conditions in which particular classes of questions are or are not generated. (Author/SD)

Five experiments explored a potentially more productive application of educational technology in which an individual learner has the opportunity to develop a social relation with a computer by interacting with an animated pedagogical agent. Results support the introduction of interactive pedagogical agents to promote meaningful learning in…

In this study, we examined why observational learning positively affects learning outcomes of new writing tasks. In this study, we focused on the effects of observational learning on the temporal organization (i.e., orchestration) of writing processes and on the subsequent influence on text quality. An experiment was set up in which participants…

The study examined children's understanding of scientific inquiry, through the lens of their conceptualization of uncertainty in investigations they had designed and implemented with a partner. These largely student-regulated investigations followed a unit about animal behavior that emphasized the scaffolding of independent inquiry. Participants…

Summary Street is educational software based on latent semantic analysis (LSA), a computer method for representing the content of texts. The classroom trial described here demonstrates the power of LSA to support an educational goal by providing automatic feedback on the content of students' summaries. Summary Street provides this feedback in an…

Changes in participant structures in classroom environments are often examined in terms of their effects on student learning. In this study, we proposed a way of examining participant structures in terms of power. According to Wertsch (1998) "the emergence of new cultural tools transforms power and authority" (p. 65). When researchers or teachers…

This study analyzes the interpretive activities of scientists related to familiar and unfamiliar graphs. The analyses show that when scientists were familiar with a graph, they read it transparently and thereby leapt beyond the material basis to the thing the graph is said to be about. In contrast, when scientists were less familiar with the…