Linear models are frequently inappropriately applied to various situations. When misapplied, linearity is traditionally referred to as a tendency, a misconception, or an error. Cognitive linguistic, situated cognition, and sociocultural or cultural-historical activity theory, on the other hand, suggest that linear models are adopted by learners…

Design strategies directly related to the development of instructional materials for rule learning were investigated. Findings indicated: 1) the degree of divergence between instances showed that contrasting, not matching, features resulted in better performance; and 2) two contextually similar rules learned simultaneously, not successfully,…

Investigates the conceptual-change process in grade 10 students during a computer-supported physics unit. Finds that many students vacillated between alternative and scientific conceptions from one context to another during instruction, and those few students who did exhibit context-independent and stable conceptual change appeared able to accept…

Organized in three sections, this report presents the first case study from a project aimed at developing prototypes of ideal textbook chapters. The report (1) discusses the Ideal Text Project, in which a number of researchers in instructional science have been challenged to design a textbook chapter that incorporates the design features they…