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1.
Many studies into learners’ ideas in science have reported that aspects of learners’ thinking can be represented in terms of entities described in such terms as alternative conceptions or conceptual frameworks, which are considered to describe relatively stable aspects of conceptual knowledge that are represented in the learner’s memory and accessed in certain contexts. Other researchers have suggested that learners’ ideas elicited in research are often better understood as labile constructions formed in response to probes and generated from more elementary conceptual resources (e.g. phenomenological primitives or ‘p‐prims’). This ‘knowledge‐in‐pieces perspective’ (largely developed from studies of student thinking about physics topics), and the ‘alternative conceptions perspective’, suggests different pedagogic approaches. The present paper discusses issues raised by this area of work. Firstly, a model of cognition is considered within which the ‘knowledge‐in‐pieces’ and ‘alternative conceptions’ perspectives co‐exist. Secondly, this model is explored in terms of whether such a synthesis could offer fruitful insights by considering some candidate p‐prims from chemistry education. Finally, areas for developing testable predictions are outlined, to show how such a model can be a ‘refutable variant’ of a progressive research programme in learning science.  相似文献   

2.
A study on the effect of a structured problem‐solving strategy on problem‐solving skills and conceptual understanding of physics was undertaken with 189 students in 16 disadvantaged South African schools. This paper focuses on the development of conceptual understanding. New instruments, namely a solutions map and a conceptual index, are introduced to assess conceptual understanding demonstrated in students’ written solutions to examination problems. The process of the development of conceptual understanding is then explored within the framework of Greeno’s model of scientific problem‐solving and reasoning. It was found that students who had been exposed to the structured problem‐solving strategy demonstrated better conceptual understanding of physics and tended to adopt a conceptual approach to problem‐solving.  相似文献   

3.
In this study we investigated the design of assignments by students as a knowledge‐generating activity. Students were required to design assignments for ‘other students’ in a computer simulation environment about electrical circuits. Assignments consisted of a question, alternatives, and feedback on those alternatives. In this way, subjects were encouraged to engage in processes such as ‘generating questions’, ‘discriminating between examples and non‐examples’, and ‘generating feedback’. The resulting assignments were analysed and different types of assignments were identified. Information on the design process was collected from think‐aloud protocol data. Results showed that students not only designed assignments about facts or procedures, but also about observations made with the simulation. During the design process, subjects actively used their prior knowledge. Students seemed to strengthen their domain knowledge by retrieving and explaining problem‐solving steps, and focus on the dynamic characteristics of the simulated circuits.  相似文献   

4.
Physicists and physics students have been studied with respect to the variation in the ways they expound on their topic of research and a physics problem, respectively. A phenomenographic approach has been employed; six fourth‐year physics students and 10 teacher‐researcher physicists at various stages of their careers have been interviewed. Four qualitatively distinct ways of expounding on physics have been identified, constituting an outcome space where there is a successive shift towards coherent structure and multiple referent domains. The interviewed person is characterized as expressing an ‘object of knowledge’, and the interviewer is characterized as a willing and active listener who is trying to make sense of it, constituting a ‘knowledge object’ out of the ideas expressed and personal experience. Pedagogical situations of analogous character to the interviewer–interviewee discussions are considered in the light of the analysis, focusing on the affordances for learning offered by the different forms of exposition.  相似文献   

5.
This article explores and attempts to rectify current conceptual confusion found in secondary art education in the UK between procedural knowledge or ‘knowing how’ and declarative knowledge or ‘knowing that’. The paper argues that current practice confuses procedural knowledge with declarative knowledge. A corollary is that assessment evidence for ‘knowing how’, which is shown or demonstrated, is confused with assessment evidence for ‘knowing that’, which requires spoken or written forms of reporting. The confusion is replicated in the national examination, the General Certificate of Secondary Education, taken by students at the age of 16. The article traces this confusion to three dualisms: the Cartesian dualisms of mind and body, an individual mind and the distributed mind of culture, and the more recent mind‐in‐brain hemisphere dualism. The article advocates a Wittgensteinian embodied, socio‐cultural view of mind as a way of solving the current conceptual confusion that prevails in art education in the UK.  相似文献   

6.
This study was an attempt to identify the epistemological roots of knowledge when students carry out hands‐on experiments in physics. We found that, within the context of designing a solution to a stated problem, subjects constructed and ran thought experiments intertwined within the processes of conducting physical experiments. We show that the process of alternating between these two modes — empirically experimenting and experimenting in thought — leads towards a convergence on scientifically acceptable concepts. We call this process mutual projection. In the process of mutual projection, external representations were generated. Objects in the physical environment were represented in an imaginary world and these representations were associated with processes in the physical world. It is through this coupling that constituents of both the imaginary world and the physical world gain meaning. We further show that the external representations are rooted in sensory interaction and constitute a semi‐symbolic pictorial communication system, a sort of primitive ‘language’, which is developed as the practical work continues. The constituents of this pictorial communication system are used in the thought experiments taking place in association with the empirical experimentation. The results of this study provide a model of physics learning during hands‐on experimentation.  相似文献   

7.
Employer complaints of engineering graduate inability to ‘apply knowledge’ suggests a need to interrogate the complex theory-practice relationship in twenty-first century real world contexts. Focussing specifically on the application of mathematics, physics and logic-based disciplinary knowledge, the research examines engineering problem-solving processes as enacted by recent graduates in a range of industrial settings. Theoretically situated in the sociology of education, the Bernsteinian concept of knowledge structures and Legitimation Code Theory epistemic relations are utilised to surface the disciplinary basis of problem solving in different sociotechnical contexts. It is argued that the relationship between the ‘what’ and the ‘how’ of the problem gives rise to significantly different practice ‘codes’ between which successful engineering problem-solvers are required to shift. This paper presents two contrasting case studies which demonstrate the impact of the environment on code-shifting practices. Findings suggest that engineering curricula need to facilitate a more conceptual grasp of contextual complexities.  相似文献   

8.
The purpose of this qualitative research was to determine the ways that knowledge is constructed and used by emergent citizen's groups (ECGs are grassroots, action‐oriented, problem‐solving groups) engaged in environmental conflicts, and by a state government environmental regulatory agency that interfaced with them. Four historical‐organizational/observational case studies of conflict dynamics involving ECGs and the government were undertaken. Case studies in a qualitative research paradigm were used since they particularize information in a complex, process oriented manner that reports life experiences. All of the grassroots groups in the study cited ‘education’ as a goal of their organizations. The research documented the struggle for who controls the meaning of hazardous scenarios. ECGs were cultural producers at the local level, developing the intellectual and moral faculties of the community, especially through collective education and collaborative and social learning. The state agency, on the other hand, constructed intellectual and moral capacity from a bureaucratic locus. As such, both were instrumental in community learning, as well as sites of contest. The results show that regulators most frequently relied on ‘codified’ or ‘official’ knowledge that reproduced the status quo. ECGs constructed ‘fugitive’ knowledge that escaped the control of institutional specialists, and that reinforced their local (and at times global) interests. Bureaucrats seldom used local knowledge to make environmental decisions. Citizens responded with rebellious collective action, quiescence and at times despair.  相似文献   

9.
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10.
Researchers have argued against deficit-based explanations of students’ difficulties with mathematical sense-making, pointing instead to factors such as epistemology. Students’ beliefs about knowledge and learning can hinder the activation and integration of productive knowledge they have. Such explanations, however, risk falling into a ‘deficit trap’—substituting a concepts/skills deficit with an epistemological one. Our interview-based case study of a freshman engineering major, ‘Jim,’ explains his difficulty solving a physics problem (on hydrostatic pressure) in terms of his epistemology, but avoids a deficit trap by modeling the dynamics of his epistemological stabilities and shifts in terms of fine-grained cognitive elements that include the seeds of epistemological expertise. Specifically, during a problem-solving episode in the interview, Jim reaches and sticks with an incorrect answer that violates common sense. We show that Jim has all the mathematical skills and physics knowledge he would need to resolve the contradiction. We argue that his difficulty doing so stems in part from his epistemological views that (i) physics equations are much more trustworthy than everyday reasoning, and (ii) physics equations do not express meaning that tractably connects to common sense. For these reasons, he does not view reconciling between common sense and formalism as either necessary or plausible to accomplish. But Jim’s in-the-moment shift to a more sophisticated epistemological stance highlights the seeds of epistemological expertise that were present all along: he does see common sense as connected to formalism (though not always tractably so), and in some circumstances, this connection is both salient and valued.  相似文献   

11.
College students often experience difficulties in solving physics problems. These difficulties largely result from a lack of conceptual understanding of the topic. The processes of conceptual learning reflect the nature of the causal reasoning process. Two major causal reasoning methods are the covariational and the mechanism‐based approaches. This study was to investigate the effects of different causal reasoning methods on facilitating students’ conceptual understanding of physics. 125 college students from an introduction physics class were assigned into covariational group, mechanism‐based group, and control group. The results show that the mechanism‐based group significantly outperformed the other two groups in solving conceptual problems. However, no significant difference was found in all three groups performance on solving computational problems. Speculation on the inconsistent performance of the mechanism‐based group in conceptual and computational problem solving is given. Detailed analyses of the results, findings, and educational implications are discussed  相似文献   

12.
The purpose of this study is to understand the nature of pre-instructional knowledge transferred by students into problem situations and the change process on students’ knowledge system during classroom discussions. This study was framed by two interrelated theoretical frameworks on knowledge structures, phenomenological primitives and coordination classes. The data were collected through problem solving sessions on turning effect of forces (torques or moment) from ten participants who were seeking a degree to become physics teachers. The analysis of data showed that, in this particular context, students’ pre-instructional ideas can be characterized according to phenomenological primitives. The theoretical constructs of the coordination classes generated meaningful results to understand students’ particular difficulties in transferring the moment concept across different contexts and the change process on students’ knowledge system. The major stimulator of the change process emerged as the students’ becoming aware of the epistemological nature of their knowledge structures and searching the causal mechanisms behind physical phenomena.  相似文献   

13.
During their socialisation process, many girls gifted in physics acquire a reality construction inconsistent with their objectively measurable competencies. In comparison to boys they rate their action and problem solving competencies unrealistically low, which results, for example, in extremely low participation rates in scientific and technical studies and professions. For this reason differences in motivation and self‐related cognitions become the focus of interest in explaining achievement differences. The present study was carried out prior to initial physics instruction. Students in the 7th grade of the German Gymnasium (243 girls and 282 boys) were divided according to their KFT 4‐13+ results into “average”, “gifted” or “highly gifted groups”. Prior to commencement of physics instruction, boys in general, as well as gifted male and female students, already possessed more knowledge of physics and more favourable motivation for the subject than girls or male and female students of average ability. In addition, domain specific measures and self‐related cognitions were evaluated in accordance with Dweck's model of achievement motivation.  相似文献   

14.
The purpose of this article is to explore how a group of four university physics students addressed mechanics problems, in terms of student direction of attention, problem solving strategies and their establishment of and ways of interacting. Adapted from positioning theory, the concepts ‘positioning’ and ‘storyline’ are used to describe and to analyse student interaction. Focused on how the students position the physics problems, themselves, and each other, the analyses produced five different storylines. The dominant storyline deals with how the students handled the problem solving, whilst two other storylines characterise alternative ways of handling the physics problems, whereas the two remaining storylines are concerned with how students positioned themselves and others—as either funny and/or knowledgeable physics students—and constitute different aspects of the physics community. Finally, the storylines are discussed in relation to the pedagogical situation, with recommendations made for teaching practice and future research.  相似文献   

15.

An extensive study was conducted of students’ explanations written in response to ‘what if...?’ questions in elementary mechanics. The study showed that the structure of students’ explanations yields roughly the same ranking of students as do problem‐solving tests, but in addition provides a wealth of insights into (1) context dependence and categorization in students’ use of concepts, (2) the effect of misconceptions on context dependence, and (3) the types of explanations that students tend to produce. A follow‐up study, in which students were presented with pairs of pre‐written explanations to ‘what if...?’ questions and asked to indicate a preference, showed that students do not necessarily prefer the types of explanations they write, and have greater difficulty assessing the correctness of explanations that are counter to preference type. Evidence is presented that, for many students, the links between physics thinking and real‐world thinking are all too tenuous.  相似文献   

16.
Teachers’ subject matter knowledge (SMK) is one factor contributing to teaching ‘successfully’, as this provides a basis from which pedagogical content knowledge develops. UK‐based trainee science teachers teach all sciences to age 14 and often up to age 16. Trainees have specialist science knowledge in chemistry, physics, or biology from their degrees. Other sciences may not have been studied since school. Thus, trainee science teachers often teach ‘outside specialism’. The extent to which teaching within and outside specialism influences successful teaching, ensuring learning objectives are achieved, was investigated. The sources seventy‐one trainees use for preparing within and outside specialism science lessons for 11–14‐year‐olds and 14–16‐year‐olds and effects on teacher self‐confidence of working in these two domains were probed by questionnaire and interview. All trainees responded to open and closed questions, and Likert‐scale statements exploring preferences for teaching, self‐confidence, handling subject‐related questions within and outside specialism, and attitudes towards learning new SMK. A subgroup of 12 trainees participated in individual semi‐structured interviews. The results are counter‐intuitive: trainees teach more successful lessons outside their specialism, particularly in the early stages. This relates to using a richer range of SMK sources, including, crucially, advice from experienced colleagues. Within specialism, trainees report an inability to select appropriate knowledge and/or strategies and a sense of conflict in teaching inaccurate information. Some ‘anxious’ trainees rely heavily on extant materials for outside specialism teaching. ‘Super‐confident’ trainees able to teach any science focus on selection of appropriate instructional strategies and realise early on the need to transform SMK.  相似文献   

17.
Drawing on a study that explores university students’ experiences of doing laboratory work in physics, this article outlines a proposed conceptual framework for extending the exploration of the gendered experience of learning. In this framework situated cognition and post‐structural gender theory are merged together. By drawing on data that aim at exploring the gendered experience of learning in physics in the laboratory setting, a case is made for the proposed conceptual framework to facilitate an analysis of gender as an active process that relates the dynamics of this process to the emerging physicist identities of the students. In other words, this framework allows for an analysis of the gendered learning experiences in a context such as physics education that goes well beyond the usual ‘women‐friendly’ teaching approaches.  相似文献   

18.
The purpose of this study was twofold. First, it was aimed to identify Turkish pre‐service physics teachers’ knowledge and understanding of the Moon, Moon phases, and other lunar phenomena. Second, the effects of model‐based teaching on pre‐service teachers’ conceptions were examined. Conceptions were proposed as mental models in this study. Four different questionnaires including 22 generative, explanation, and factual questions were used through the study. The pre‐service physics teachers’ mental models generated in response to lunar phenomena might be representations of their naïve knowledge as a result of their causal observations and experiences with the world, and their misconceptions as a result of inconsistencies between their naïve knowledge and scientific knowledge. Therefore, the pre‐service teachers’ mental models were categorized based on the work by Chi and Roscoe. Some of the pre‐service teachers’ mental models shifted from flawed or incomplete mental models to correct mental models of the Moon and lunar phenomena with the facilitation of model‐based teaching. The conclusions of the study carry implications for curriculum developers and teacher education.  相似文献   

19.
The Physics Metacognition Inventory was developed to measure physics students’ metacognition for problem solving. In one of our earlier studies, an exploratory factor analysis provided evidence of preliminary construct validity, revealing six components of students’ metacognition when solving physics problems including knowledge of cognition, planning, monitoring, evaluation, debugging, and information management. The college students’ scores on the inventory were found to be reliable and related to students’ physics motivation and physics grade. However, the results of the exploratory factor analysis indicated that the questionnaire could be revised to improve its construct validity. The goal of this study was to revise the questionnaire and establish its construct validity through a confirmatory factor analysis. In addition, a Rasch analysis was applied to the data to better understand the psychometric properties of the inventory and to further evaluate the construct validity. Results indicated that the final, revised inventory is a valid, reliable, and efficient tool for assessing student metacognition for physics problem solving.  相似文献   

20.
This study examines students’ use of proportional reasoning in high school physics problem‐solving in a West African school setting. An in‐depth, constructivist, and interpretive case study was carried out with six physics students from a co‐educational senior secondary school in Nigeria over a period of five months. The study aimed to elicit students’ meanings, claims, concerns, constructions, and interpretations of their difficulty with proportional reasoning as they worked on a series of 18 high school physics tasks. Multiple qualitative research techniques were employed to generate, analyse, and interpret data. Results indicated that several socio‐cultural, psychosocial, cognitive, and mathematical issues were associated with students’ use of proportional reasoning in physics. Students’ capacity to reason proportionally was not only linked to their difficulty with the concept, structure, and strategies of proportional reasoning as a learning and problem‐solving skill, but was also embedded in the social, cultural, cognitive, and contextual elements involved in the learning of physics. The study concludes with a discussion of the implications for teaching high school physics.  相似文献   

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