Sociocultural studies of science education have consistently recognized the dialectic nature of students' agency to create and author positions for themselves and the structural constraints that may influence them. This mixed-methods study explores one particular aspect of these potential constraints: the possibility of a social structure specific…

This study investigated the representations of a select group of scientists (n = 10) in a sample of Canadian high school and college textbooks. Drawing on semiotic and cultural-historical activity theoretical frameworks, we conducted two analyses. A coarse-grained, quantitative analysis of the prevalence and structure of these representations…

Reports on an analysis of secondary school physics teaching with respect to three aspects of curriculum. Indicates that limited but significant relationships exist among intentions, translations, and achievement in the teaching of physics in Canadian secondary schools. (TW)

Reports a qualitative analysis of classroom discourse in which use of questions by science teachers is assessed in terms of arguments to establish scientific knowledge claims. Questions are analyzed not for form/frequency but for their function in developing arguments that establish claims rationally. (Author/JN)

Reported the development and validation of an integrated model of performance on chemical concept-volumetric analysis. Model was tested on 265 chemistry students in eight schools.Results indicated that for subjects using algorithms without understanding, performance on volumetric analysis problems was not influenced by proportional reasoning…

Examined trends in teachers' recommendations for changing elementary and junior high school science programs between 1978 and 1982. Results discussed are based on responses of British Columbia teachers- 3,040 teachers in 1978 and 1,631 in 1982, with return rates ranging from 77.5 percent to 85 percent. (JN)

Presents a logical analysis of three vector concepts (position, displacement, velocity) in terms of their constituent characteristics and shows how they can be used to structure an empirical investigation into students' prior knowledge about these characteristics. Reports results of students' (N=20) conceptions about the vector characteristics…

Reports on a study of Canadian upper secondary science students' achievement of the concept of proportion. Results indicated that, in classes where the proportion content was emphasized by the teachers, higher achievement was demonstrated. (TW)

Three psychometric methods for validating learning hierarchies were applied to one data set derived from student responses (N=269) to items representing skills in a hypothesized hierarchy for the mole concept. The hierarchy derived from the analysis was supported by a test for transfer of learning from subordinate to superordinate skills.…

Explores the sources of beliefs about science-technology-society topics and investigates the degree of ambiguity harbored by four different response modes, such as Likert-type, written paragraph, semistructured interview, and empirically developed multiple choice. Finds that mass media have a greater impact than science classes. (Author/YP)

Reports on a study done in Quebec, Canada, to determine the level of agreement or disagreement between principals and teachers using established criteria to measure the effectiveness of a science teacher. Results were used in an attempt to construct a profile of the attributes of an outstanding science teacher. (TW)

Describes a study designed to explore sources of influence on the judgements made by science teachers related to school characteristics, classroom features, and properties of a science curriculum. Results suggest that teachers' judgments center around concern for student ability and interest, teaching methods, and school spirit and morale. (TW)