Analyzes talk among students on videotaped recordings from a teaching sequence on the particle model. Emphasizes the role of two types of discourse and epistemological and ontological obstacles in the construction of scientific meanings in the classroom. Contains 41 references. (DDR)

Summarizes case studies developed by a group of collaborating educators. Investigates ways of speaking that encourage students to formulate insightful questions about science topics and express their own ideas during reflective discussions. (Contains 68 references.) (Author/YDS)

Trained preschoolers and adults on three sets of successive discriminations with stimuli labeled A, B, and R. Tested for derived stimulus-response relations and stimulus-stimulus relations. Adults displayed class-consistent B-R and A-B performances over all conditions. Children's display of class-consistent B-R performance varied by training…

Discusses the scheme and findings of a study designed to identify the conceptual knowledge used by high school students to solve a significant problem related to osmosis. Useful tips are provided to teachers to aid students in developing constructs that maximize understanding. (ZWH)

Investigated development of turn and turn measurement concepts within a computer-based instructional unit. Written assessments, interviews, and interpretive case studies of third and fourth graders found that turns were less salient for children than forward and back motions; students evinced a progressive construction of imagery and concepts…

Recommends the use of the Cognitive Acceleration through Science Education (CASE) project which gives thinking skills lessons to students ages 11-13 to increase their general thinking ability. (DDR)

Presents two pedagogical techniques designed to promote the development of a conceptual framework in general chemistry. Describes an exam repechage which turns exams into learning experiences for students, and the grouped laboratory essay approach in which students complete essays outside of class. (DDR)

Addresses the difficulty that teaching assistants and new faculty members may experience in finding a convenient outline of the task of preparing an experiment for undergraduates. Explains all phases of developing a laboratory exercise and includes a list of things to consider for each phase. (DDR)

Discusses geometry and Dynamical Geometry Software (DGS). Analyses the way DGS-use influences traditional geometry. Highlights changes in the interactions between geometry, computers, and DGS and human users, focusing on changes in the teaching and learning of geometry. Concludes that DGS deeply changes geometry if it is taken as a human activity…

Recommends the use of heart models in teaching about the circulatory system. Argues that simulation activities can deepen students' understanding of heart structure, dispel misconceptions of the cardiac cycle, and foster awareness of the importance of maintaining a healthy heart. (DDR)

Discusses the three-step implementation of an instructional technology tool and associated pedagogy to support teaching and learning computer programming concepts. The Flowchart Interpreter (FLINT) was proven through experiments to support novice programmers better than the traditional textbook approach. (EV)

Describes the refinement of a conception in the domain of linear functions. Examples show how students refine their use of the x-intercept in equations of the form "y=mx+b" by narrowing problem contexts, making connections between conceptions, using a mathematical procedure, and refining verbal descriptions. Resources that teachers can draw on to…

Reports on preservice teachers' use of a concept-mapping tool to create/modify concept maps about science-related elementary curriculum-content knowledge. Data from interviews, journals, and analysis of the concept maps showed how the preservice teachers used the tool to construct their curriculum-content knowledge in the form of more powerful…

Provides an overview of a student research program that stresses the role of science in everyday life, knowledge and understanding, and the methods of scientific inquiry. Provides concrete examples of how these purposes can be achieved in a holistic way. (DDR)

Responds to Needham and Baillargeon's criticisms and offers an alternative resolution of the conflicting results between the laboratories regarding abilities of infants less than 12 months to use property/featural information for object individuation. Maintains that kind concepts are acquired as infants approach their first birthday and that…