There is considerable agreement about the fact that the presence of researchers in the classroom mediates teaching and learning. Why "should" two very different forms of human activity, one designed to study the other, interact and mediate each other? In this article, we propose cultural-historical activity theory as a framework for understanding…

Forty-six students enrolled in a high school physics course participated in a study designed to portray student views on, and understanding of, collaborative concept mapping. Students demonstrated a good understanding of concept maps and emphasized their usefulness as a learning tool. (56 references) (ZWH)

One important challenge for researchers is to understand what happens inside classrooms that make the environment available for children's learning. This study develops the margin|centre dialectic as a general framework for describing participation of very young children in science-related activities. It employs a cultural-historical approach that…

Illustrates how teachers designed new science learning environments based on research readings from science and technology studies and studied teaching and learning within these environments. Examples of students' science-related activities include videotaped laboratory activities, taped interviews, and student-produced artifacts collected over…

Reports on a study of a physics class in which few interactions occur among students. Concludes, through observations and interviews. that students describe both the social and physical world in different ways. Contains 33 references. (DDR)

Presents a study involving students (n=46) enrolled in an introductory physics course designed to describe and understand students' experimenting and problem-solving strategies in a constructivist learning environment. Concludes that students should be provided with problem-rich learning environments in which they learn to investigate phenomena of…

Presents a teacher's reflection on his teaching using two different perspectives. The first perspective uses the cognitive apprenticeship metaphor as a tool for analyzing and understanding teaching. The second, a methodological perspective, uses conversational analysis to arrive at microanalytic descriptions and conceptualizations of teaching. (PR)

Describes a study of factors in the development of reasoning on the balance beam (n=34 nonscience majors in a Physical Science class). From this study and others, the author developed a model of problem solving and problem-solving behaviors. The implications of this model for instruction are discussed. (PR)

A study of two classes of eighth-grade science students taught by the same teacher investigated student perceptions of learning environment, achievement levels, and conceptual understanding of research. Found relationships between autonomy and student-centeredness scales and post-testing. Features three student case studies, underscoring the…

Reports on learning when engaged in a four-month experience of co-teaching a water unit in a seventh-grade classroom. Suggests that co-teaching allows for a mode of learning that is not captured by Schon's notions of reflection-in-practice and reflection-on-practice. Concludes that co-teaching, as co-learning, is praxis. Contains 26 references.…