Investigates common problem-solving strategies of sixth-grade students (N=25) identified by their teachers as having superior abilities in problem solving. Audiotaped interview problem-solving sessions recorded behaviors of individual students. Conclusions are that superior problem solvers share common strategies for different types of problems.…

Explores the cognitive development of Nepalese students by administering Piagetian-type tasks and comparing geographically and culturally different children. Boys and girls (N=256) of ages 8, 10, and 12 were administered tasks of conservation, classification and seriation, and causality. Implications for curriculum development in Nepal are made.…

Describes cognitive mapping techniques compatible with the information processing view of human thinking. Student knowledge was assessed by clinical interview and performance on paper-and-pencil tasks. Concept maps and semantic networks were then constructed. Uses that these assessment tasks and representations might have in science education are…

Compares the effectiveness of interactive free choice learning experiences to and combined with the lecture-demonstration approach in teaching sixth-grade children (N=50) to criticize and control experiments. Results contradict Piagetian theory regarding the importance of interactive experiences and exposure to materials in fostering these…

Describes the development of the Science Laboratory Environment Inventory (SLEI) instrument for assessing perceptions of the psychosocial environment in science laboratory classrooms, and reports validation information for samples of senior high school students from six different countries. The SLEI assesses five dimensions of the actual and…

Reports a study of 10 preservice biology teachers' subject matter structure (SMS). Using qualitative methods, the researchers sought to discover the nature and source of the SMS, the stability, and the relationship to the act of teaching. Among the conclusions are that these preservice teachers do not appear cognizant of their SMSs and that the…

Discusses seven propositions concerning science teacher preservice education. Authors describe the results of a study investigating the experiences and processes of change in 15 preservice teachers. Among the findings are that students did not progressively and sequentially address and surmount the different levels of teacher concern that were…

Reports a single case design study on the exam performance in science of fifth and sixth graders (n=27) using note taking combined with self-questioning. Authors found gains in science exams when notetaking/self-questioning strategies were in effect. (PR)

Reviews research relevant to the problem of unsatisfactory student problem-solving abilities and suggests a teaching strategy that addresses the issue. Author explains how she uses teaching aloud problem solving (TAPS) in college chemistry and presents evaluation data. Among the findings are that the TAPS class got fewer problems completely right,…

Reports results of metanalysis of 19 studies on concept mapping (CM) in science instruction. Results showed CM has positive effects on student achievement and attitudes. Differences in achievement depended on science content class, with biology being most favored. Smaller differences in achievement were found when CM groups were compared to a…

In this article, constructivism is examined as an epistemological basis for school science and mathematics instruction. The nature and process of constructing scientific and mathematical knowledge in school settings is also considered. A distinction is made between truth and feasibility, and the implications for science education are discussed.…

Describes an observation study of a second-grade classroom where a problem-centered approach to mathematics is used. Discusses analogies between scientific communities and social life in the class. Authors discuss analogies that helped them cope in the classroom with the complexity of children's beliefs, their dialogues about mathematics, and the…

Authors describe some alternative conceptions held by Portuguese physics students about mechanics and compare students' scientific conceptions with the evolution of historical ideas. Authors contend that teacher knowledge about the history of science can facilitate teaching for conceptual change in physics. (over 20 references) (Authors/PR)

Reports on interviews with 28 high school biology students in Jerusalem concerning teleological and anthropomorphic formulations and reasoning. Results indicate acceptance of anthropomorphic formulations does not imply a prevalence of anthropomorphic reasoning. Most high school students can distinguish between anthropomorphic formulations and…

Presents a historical overview of the development of concept of linkage (collocation of genes on homologous chromosomes), and provides a perspective of the development of two opposing explanatory models of genetic linkage. Author asserts that a historical view can help students recognize that explanatory models are constructs developed over time,…