Learning Through Constructing Representations in Science: A framework of representational construction affordances

Compared with research on the role of student engagement with expert representations in learning science, investigation of the use and theoretical justification of student-generated representations to learn science is less common. In this paper, we present a framework that aims to integrate three perspectives to explain how and why representational construction supports learning in science. The first or semiotic perspective focuses on student use of particular features of symbolic and material tools to make meanings in science. The second or epistemic perspective focuses on how this representational construction relates to the broader picture of knowledge-building practices of inquiry in this disciplinary field, and the third or epistemological perspective focuses on how and what students can know through engaging in the challenge of representing causal accounts through these semiotic tools. We argue that each perspective entails productive constraints on students’ meaning-making as they construct and interpret their own representations. Our framework seeks to take into account the interplay of diverse cultural and cognitive resources students use in these meaning-making processes. We outline the basis for this framework before illustrating its explanatory value through a sequence of lessons on the topic of evaporation.     

The Usefulness of a Science Degree: The “lost voices” of science trained professionals

This paper reports a study of science graduates who are employed in positions outside their discipline specialisation. The research was designed to uncover the reasons for them choosing to study science at university, the competencies they utilise in their work and their lives, and how these relate to their undergraduate education in science. The study is seen as important in that already about one‐half of science graduates are in such positions and it is argued that there is a need in scientific and technologically based societies to have a greater representation of such people in decision‐making positions in government and industry. The directions for the science degree that can be drawn from the data gathered are congruent with those arising from other relevant studies. That is, attention should be paid to widely used skills, such as communication and problem‐solving, and to developing an understanding of science within its social and ethical context. An argument is mounted for considering the way the science degree is presented to potential students and to the general public.     

Progression in primary school children's conceptions of burning: Toward an understanding of the concept of substance

Children's conceptions of burning were explored through observation and discussion or a number of challenging phenomena. Analysis of written responses showed that children's conceptions are both specific and contextually based, and that there is little coherence in the use of any one conception across phenomena. Progression across the primary school years can be described, however, in terms of children's growing confidence with the idea of transformation of substances and the analysis relates this to a model based on changing commitments to the notion of substance defined by properties, rather than history. The conceptual trajectories described in the study are broadly consistent with previous studies of secondary school children.     

Tracing Young Children's Scientific Reasoning

This paper explores the scientific reasoning of 14 children across their first two years of primary school. Children's view of experimentation, their approach to exploration, and their negotiation of competing knowledge claims, are interpreted in terms of categories of epistemological reasoning. Children's epistemological reasoning is distinguished from their ability to control variables. While individual children differ substantially, they show a relatively steady growth in their reasoning, with some contextual variation. A number of these children are reasoning at a level well in advance of curriculum expectations, and it is argued that current recommended practice in primary science needs to be rethought. The data is used to explore the relationship between reasoning and knowledge, and to argue that the generation and exploration of ideas must be the key driver of scientific activity in the primary school.     

From “Try It and See” to strategic exploration: Characterizing young children's scientific reasoning

This article explores ways of characterizing different dimensions and levels of scientific reasoning in early elementary school children, in the context of open explorations. The article focuses on children's performance on three probes which involve using evidence to generate and evaluate knowledge claims. A number of dimensions have been used to characterize children's approaches to exploration and knowledge construction, which demonstrate the interrelationship between conceptual knowledge and scientific reasoning. Children differed markedly across these dimensions, yet individual children were relatively consistent in their approach to the tasks. The major differences in performance are linked to fundamental distinctions in the way ideas are viewed in relation to evidence. © 2003 Wiley Periodicals, Inc. J Res Sci Teach 41: 94–118, 2004     

The nature of students’ informal science conceptions

Case studies have been constructed of primary school children's developing explanations of a range of air pressure phenomena. A range of conceptions relating to air pressure have been identified, and insights gained concerning the way these interrelate over time and over context. It was found that children are naturally generative in their construction of explanations, but that they use conceptions in quite complex and fluid ways. It is argued that naive conceptions maintain a valuable function as intuitive recognition elements that feed more sophisticated conceptions, and that generating a satisfying explanation for a phenomenon can involve having access to a range of interrelated conceptions. A range of contextual factors were identified, which influence the construction of explanations, and can act as barriers to the application of scientific conceptions.     

Multiple Representation in Learning About Evaporation

There has been extensive research on children’s understanding of evaporation, but representational issues entailed in this understanding have not been investigated in depth. This study explored three students’ engagement with science concepts relating to evaporation through various representational modes, such as diagrams, verbal accounts, gestures, and captioned drawings. This engagement entailed students (a) clarifying their thinking through exploring representational resources; (b) developing understanding of what these representations signify; and (c) learning how to construct representational aspects of scientific explanation. The study involved a sequence of classroom lessons on evaporation and structured interviews with nine children, and found that a focus on representational challenges provided fresh insights into the conceptual task involved in learning science. The findings suggest that teacher‐mediated negotiation of representational issues as students construct different modal accounts can support enriched learning by enabling both (a) richer conceptual understanding by students; and (b) enhanced teacher insights into students’ thinking.     

Teaching and Learning about Force with a Representational Focus: Pedagogy and Teacher Change

A large body of research in the conceptual change tradition has shown the difficulty of learning fundamental science concepts, yet conceptual change schemes have failed to convincingly demonstrate improvements in supporting significant student learning. Recent work in cognitive science has challenged this purely conceptual view of learning, emphasising the role of language, and the importance of personal and contextual aspects of understanding science. The research described in this paper is designed around the notion that learning involves the recognition and development of students’ representational resources. In particular, we argue that conceptual difficulties with the concept of force are fundamentally representational in nature. This paper describes a classroom sequence in force that focuses on representations and their negotiation, and reports on the effectiveness of this perspective in guiding teaching, and in providing insight into student learning. Classroom sequences involving three teachers were videotaped using a combined focus on the teacher and groups of students. Video analysis software was used to capture the variety of representations used, and sequences of representational negotiation. Stimulated recall interviews were conducted with teachers and students. The paper reports on the nature of the pedagogies developed as part of this representational focus, its effectiveness in supporting student learning, and on the pedagogical and epistemological challenges negotiated by teachers in implementing this approach.     

Designing and delivering representation-focused science lessons in a digital learning environment

Educational technology research and development - Inquiry-based representation-focused approaches in science education have shown promising outcomes when students engage in knowledge building via...