It is commonly observed that during classroom or group discussions some students have greater influence than may be justified by the normative quality of those students' contributions. We propose a 5-component theoretical framework in order to explain how undue influence unfolds. We build on literatures on persuasion, argumentation, discourse, and…

Learning progressions (LPs) are theoretical models of how learners develop expertise in a domain over extended periods of time. Recent policy reports have touted LPs as a promising approach to aligning standards, curriculum, and assessment. However, the scholarship on LPs is relatively sparse, and the jury is still out on the theoretical and…

Research on personal epistemologies (Hofer & Pintrich, 2002) has mostly conceptualized them as stable beliefs or stages of development. On these views, researchers characterize individual students' epistemologies with single, coherent descriptions. Evidence of variability in student epistemologies, however, suggests the need for more complex…

Describes tools for authoring all aspects of a knowledge-based tutor system: domain model, teaching strategies, student model, and learning environment. Discusses a number of design issues and design tradeoffs that are involved in building intelligent tutoring systems (ITS). (Author/CCM)

Presents a prototype authoring tool for interactive educational software called Investigate and Decide Learning Environments (IDLE-Tool). Introduces IDLE-Tool as the task model around which the tool is based. A model of the authoring process called Guided Case Adaptation is offered as an approach to employing models and an exemplar to effectively…

Argues that a focus on building an authoring tool for a complete learning environment is misplaced. Analyzes the task of authoring a commercial educational system. Describes the Visual Translator, an authoring tool written specifically for this purpose. (Author/CCM)

Describes how scientists use representations and tools in the chemistry laboratory. Derives implications from these findings for the design of educational environments. (Author/CCM)

Argues that role-playing activities can be a powerful tool in mathematics and science education, particularly in the new sciences of complexity (i.e., the study of complex systems). Two role-playing activities are described, each designed to help students develop better intuitions on how complex phenomena can arise from simple interactions, and…