Presents the results of a study that identifies misconceptions in chemistry by means of a two-tier diagnostic instrument. Data indicate that similar misconceptions are held by both Singaporean and Australian populations. Focuses on covalent bonding and structure. (DDR)

Describes a study in which secondary students (N=32) were interviewed to determine their understanding of the nature of scientific knowledge. Presents some of the strengths and weaknesses of these views and provides cross-cultural comparisons. (DDR)

Explores whether exposure to increasingly sophisticated mental models at different points in a chemistry education class showed up in patterns of preference and use of models in interpreting physical properties and phenomena. (Contains 92 references.) (DDR)

Describes trends in students' explanations of biological change in organisms. Student responses to questions on how graphically depicted phenomena occur were analyzed and most students were unable to offer causal explanations. (Contains 27 references.) (DDR)

Examines a classification system that offers a framework for discussing and choosing questions regarding curricular organization, classroom environment, and teaching and learning strategies. (Contains 21 references.) (DDR)

Argues that evolution is a process that occurs within the curriculum as well as within the physical universe. Provides an example that involves student presentations. Discusses the transition from poster presentations to electronic presentations via the World Wide Web. (DDR)

Lends support to the idea that the quality of the cases used in problem-based learning affects the nature of student learning in this context. Outlines seven principles adapted from research on learning and cognition that can help guide case design. Contains 22 references. (DDR)

Pedagogical content knowledge, the content-specific knowledge which embodies the aspects of content most germane to its teachability and which is most likely to distinguish the understanding of the content specialist from the pedagogue, has been widely regarded as important for effective teaching of complex subject matter such as science. This…

This study of physics problem-solving identifies reasoning mechanisms that enable the problem-solver to achieve the transformation to a physics structure of the problem situation. Elaboration is explored as a mechanism in fulfilling this transformation by providing beginning problem-solvers with elaborations that they failed to infer. A card…