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1.
To help students acquire mathematics and science knowledge and competencies, educators typically use multiple external representations (MERs). There has been considerable interest in examining ways to present, sequence, and combine MERs. One prominent approach is the concreteness fading sequence, which posits that instruction should start with concrete representations and progress stepwise to representations that are more idealized. Various researchers have suggested that concreteness fading is a broadly applicable instructional approach. In this theoretical paper, we conceptually analyze examples of concreteness fading in the domains of mathematics, physics, chemistry, and biology and discuss its generalizability. We frame the analysis by defining and describing MERs and their use in educational settings. Then, we draw from theories of analogical and relational reasoning to scrutinize the possible cognitive processes related to learning with MERs. Our analysis suggests that concreteness fading may not be as generalizable as has been suggested. Two main reasons for this are discussed: (1) the types of representations and the relations between them differ across different domains, and (2) the instructional goals between domains and subsequent roles of the representations vary.
相似文献2.
Tommi Kokkonen 《Science & Education》2017,26(7-9):777-798
Model-based learning (MBL) has an established position within science education. It has been found to enhance conceptual understanding and provide a way for engaging students in authentic scientific activity. Despite ample research, few studies have examined the cognitive processes regarding learning scientific concepts within MBL. On the other hand, recent research within cognitive science has examined the learning of so-called relational categories. Relational categories are categories whose membership is determined on the basis of the common relational structure. In this theoretical paper, I argue that viewing models as relational categories provides a well-motivated cognitive basis for MBL. I discuss the different roles of models and modeling within MBL (using ready-made models, constructive modeling, and generative modeling) and discern the related cognitive aspects brought forward by the reinterpretation of models as relational categories. I will argue that relational knowledge is vital in learning novel models and in the transfer of learning. Moreover, relational knowledge underlies the coherent, hierarchical knowledge of experts. Lastly, I will examine how the format of external representations may affect the learning of models and the relevant relations. The nature of the learning mechanisms underlying students’ mental representations of models is an interesting open question to be examined. Furthermore, the ways in which the expert-like knowledge develops and how to best support it is in need of more research. The discussion and conceptualization of models as relational categories allows discerning students’ mental representations of models in terms of evolving relational structures in greater detail than previously done. 相似文献
3.
Past studies have explored the role of student science notebooks in supporting students' developing science understandings. Yet scant research has investigated science notebook use with students who are learning science in a language they are working to master. To explore how student science notebook use is co-constructed in interaction among students and teachers, this study examined plurilingual students' interactions with open-ended science notebooks during an inquiry science unit on condensation and evaporation. Grounded in theoretical views of the notebook as a semiotic social space, multimodal interaction analysis facilitated examination of the ways students drew upon the space afforded by the notebook as they constructed explanations of their understandings. Cross-group comparison of three focal groups led to multiple assertions regarding the use of science notebooks with plurilingual students. First, the notebook supported student-determined paths of resemiotization as students employed multiple communicative resources to express science understandings. Second, notebooks provided spaces for students to draw upon diverse language resources and as a bridge in time across multiple inquiry sessions. Third, representations in notebooks were leveraged by both students and teachers to access and deepen conceptual conversations. Lastly, students' interactions over time revealed multiple epistemological orientations in students' use of the notebook space. These findings point to the benefits of open-ended science notebooks use with plurilingual students, and a consideration of the ways they are used in interaction in science instruction. 相似文献
4.
We review Brown and Kloser’s article, “Conceptual continuity and the science of baseball: using informal science literacy
to promote students science learning” from a Vygotskian cultural-historical and dialectic perspective. Brown and Kloser interpret
interview data with student baseball players and claim that students’ conceptual understanding articulated in vernacular genres
involves continuities (similarities) with the canonical scientific explanations. In this commentary, we suggest that the authors’
approach presupposes the dichotomy of the formal and the informal, which brings the authors’ attention to continuity into
the separation of cognition from language. We propose a Vygotskian approach that points out the problem of theorizing cognition
(conceptual understanding) by depending on specific forms of representation (e.g., scientific terms). As alternative, we envision
a Vygotskian cultural-historical approach to language, which considers different, irreducible modes of communication as an
integrated whole and therefore allows theorizing cognition without dichotomizing it from the concrete ways by which human
being communicates. We provide an exemplary analysis of a lecture talk in a university physics classroom and exemplify dialectic
theories that explain the development of conceptual understanding. We discuss that this Vygotskian dialectic approach shows
that people communicate scientific concepts through hybridization, which does not reproduce a genre self-identically; the continuity of conceptual understanding involves dis/continuity. 相似文献
5.
《Critical Studies in Education》2013,54(2):145-155
Against the background of an increasing drop‐out rate of students with ethnic minority and working‐class backgrounds, the aim of this paper is to discuss the ways in which writing practices in Swedish teacher education produce power and include/exclude subjectivities. A conventional academic writing practice will be compared to a hybrid writing practice that has been experimented with for several years at the Stockholm Institute of Education. This hybrid writing practice is characterized by two intertwined features: a divergent complicity that combines diverse subjectivities and multiple theories in a multigenre text; and a convergent and reductive shift that makes academic writing accessible. As the paper will show, a hybrid writing practice can strengthen the inclusion of students with ethnic minority and working‐class backgrounds and, in turn, help them finish their programs. It is, however, not bereft of all exclusionary tendencies. 相似文献
6.
Many students have difficulty learning symbolic and molecular representations of chemistry. This study investigated how students developed an understanding of chemical representations with the aid of a computer‐based visualizing tool, eChem, that allowed them to build molecular models and view multiple representations simultaneously. Multiple sources of data were collected with the participation of 71 eleventh graders at a small public high school over a 6‐week period. The results of pre‐ and posttests showed that students' understanding of chemical representations improved substantially (p < .001, effect size = 2.68‐. The analysis of video recordings revealed that several features in eChem helped students construct models and translate representations. Students who were highly engaged in discussions while using eChem made referential linkages between visual and conceptual aspects of representations. This in turn may have deepened their understanding of chemical representations and concepts. The findings also suggest that computerized models can serve as a vehicle for students to generate mental images. Finally, students demonstrated their preferences of certain types of representations and did not use all types of three‐dimensional models interchangeably. © 2001 John Wiley & Sons, Inc. J Res Sci Teach 38: 821–842, 2001 相似文献
7.
This study examined the relationships among peer alignment (the feeling that one is similar in important ways to one's engineering peers), instructor connectedness (the sense that one knows and looks up to academic staff/faculty members in the department), self-efficacy for engineering class work (confidence in one's ability to successfully complete engineering class work), and engineering students' satisfaction with the major. A total of 135 sophomore (second-year university students) and junior (third-year students) engineering students were surveyed to measure these three variables. A multiple regression analysis showed that self-efficacy, peer alignment, and instructor connectedness predicted student satisfaction with the major, and that self-efficacy acted as a mediator between both peer alignment and instructor connectedness on the one hand, and satisfaction on the other. The authors offer suggestions for practice based on the results. 相似文献
8.
Herbert C. Covey 《Educational gerontology》2013,39(2-3):95-109
In this paper disengagement, activity, lifespan, subcultural and continuity theories of social gerontology are described and criticized. Each perspective is then used to interpret participation in higher education by older students. An argument is made that continuity theory holds the most promise in accounting for older students. A suggestion is made that we need to reconsider the ways we think of older people and stress the positive roles of old age in and of themselves. 相似文献
9.
This study was designed to examine students’ use of multiple modal representations within their written arguments as a consequence
of completing a series of investigations of an organic chemistry laboratory course. One hundred and eleven students from a
major Midwestern university were involved in using the Science Writing Heuristic (SWH) approach where they are required to
use the argument structure of question, claim, evidence and reflection in completing the written report for their instructor
on their laboratory investigations. Results indicate that students who achieved a high score for embedded multiple modal representations
in the evidence section also constructed high quality arguments. That is, students who were able to embed multiple modal representations
in evidence made strong reasoned connections to support their claim(s) and construct a cohesive argument. Further, there were
strong correlations between the laboratory examination score and holistic quality of argument. This study suggests there is
a need to build support structures pedagogically for the individual in order to help students understanding the role and function
of multiple modal representations in science. 相似文献
10.
Mitchell J. Nathan Matthew Wolfgram Rachaya Srisurichan Candace Walkington Martha W. Alibali 《The Journal of educational research》2017,110(3):272-293
ABSTRACTThis classroom-based investigation sought to document how, in real time, STEM teachers and students attempt to locate the invariant mathematical relations that are threaded through the range of activities and representations in these classes, and how highlighting this common thread influences student participation and learning. The authors conducted multimodal discourse analyses of teacher–student interactions during multiday observations in 3 urban high school STEM classes. The focal lessons were in electrical engineering and mechanical engineering (within Project Lead the Way), and precollege geometry. Across 3 cases, teachers and students actively built and maintained cohesion of invariant mathematical relations across activities and representations. Pre- and postlesson interviews revealed that teachers intentionally managed cohesion to provide the continuity across the curricular activities that teachers believed would promote student understanding. The findings contribute to ways of fostering STEM integration and ways of grounding abstractions to promote meaning making and transfer. 相似文献
11.
This article explores the conceptual change of students in Grades 10 and 12 in three Australian senior high schools when the teachers included computer multimedia to a greater or lesser extent in their teaching of a genetics course. The study, underpinned by a multidimensional conceptual‐change framework, used an interpretive approach and a case‐based design with multiple data collection methods. Over 4–8 weeks, the students learned genetics in classroom lessons that included BioLogica activities, which feature multiple representations. Results of the online tests and interview tasks revealed that most students improved their understanding of genetics as evidenced in the development of genetics reasoning. However, using Thorley's (1990) status analysis categories, a cross‐case analysis of the gene conceptions of 9 of the 26 students interviewed indicated that only 4 students' postinstructional conceptions were intelligible–plausible–fruitful. Students' conceptual change was consistent with classroom teaching and learning. Findings suggested that multiple representations supported conceptual understanding of genetics but not in all students. It was also shown that status can be a viable hallmark enabling researchers to identify students' conceptual change that would otherwise be less accessible. Thorley's method for analyzing conceptual status is discussed. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 44: 205–235, 2007 相似文献
12.
Since the 1990s, researchers have increasingly drawn attention to the multiplicity of representations used in science. This
issue of RISE advances this line of research by placing such representations at the centre of science teaching and learning. The authors
show that representations do not simply transmit scientific information; they are integral to reasoning about scientific phenomena.
This focus on thinking with representations mediates between well-resolved representations and formal reasoning of disciplinary
science, and the capacity-limited, perceptually-driven nature of human cognition. The teaching practices described here build
on three key principles: Each representation is interpreted through others; natural language is a sign system that is used
to interpret a variety of other kinds of representations; and this chain of signs or representations is ultimately grounded
in bodily experiences of perception and action. In these papers, the researchers provide examples and analysis of teachers
scaffolding students in using representations to construct new knowledge, and in constructing new representations to express
and develop their knowledge. The result is a new delineation of the power and the challenges of teaching science with multiple
representations. 相似文献
13.
Simon Kitto Sue Saltmarsh 《International journal of qualitative studies in education》2013,26(2):151-171
This paper uses poststructuralist theories of governmentality, agency, consumption and Barry’s (2001) concept of Technological Societies, as a heuristic framework to trace the role of online education technologies in the instantiation of subjectification processes within contemporary Australian universities. This case study of the unintended effects of the adoption and usage of an online educational technology (WebFreedom) for online examinations in an Australian university setting is analysed using poststructuralist theories of governmentality, agency and consumption. The analysis demonstrates how techniques of governing the learning practices of students via online educational technologies intersect with the agentive capacity of students who are relocated as consumers in the higher education marketplace. In particular the paper focuses on the production of unintended localized online examination behaviours resulting in a form of ‘subterranean ethics’ or cheating in online exams. The results from this case study raise critical questions concerning the ways in which both students and tertiary educators are constituted within neoliberal governmental thought, as well as the ways in which students produce themselves in practice as autonomous agents and educational consumers within tertiary education. Suggestions on the focus of future research in the area are discussed. 相似文献
14.
Understanding bonding is fundamental to success in chemistry. A number of alternative conceptions related to chemical bonding have been reported in the literature. Research suggests that many alternative conceptions held by chemistry students result from previous teaching; if teachers are explicit in the use of representations and explain their content-specific forms and functions, this might be avoided. The development of an understanding of and ability to use multiple representations is crucial to students’ understanding of chemical bonding. This paper draws on data from a larger study involving two Year 11 chemistry classes (n = 27, n = 22). It explores the contribution of explicit instruction about multiple representations to students’ understanding and representation of chemical bonding. The instructional strategies were documented using audio-recordings and the teacher-researcher’s reflection journal. Pre-test–post-test comparisons showed an improvement in conceptual understanding and representational competence. Analysis of the students’ texts provided further evidence of the students’ ability to use multiple representations to explain macroscopic phenomena on the molecular level. The findings suggest that explicit instruction about representational form and function contributes to the enhancement of representational competence and conceptual understanding of bonding in chemistry. However, the scaffolding strategies employed by the teacher play an important role in the learning process. This research has implications for professional development enhancing teachers’ approaches to these aspects of instruction around chemical bonding. 相似文献
15.
Kropman Marc van Drie Jannet van Boxtel Carla 《European Journal of Psychology of Education - EJPE》2023,38(3):1295-1315
School history textbook narratives of a nation’s past often present limited perspectives, which may impede the aim of teaching history from multiple perspectives. Less is known about the influence of including multiple perspectives on students’ representations of the past. This study examines the extent to which students include multiple perspectives when processing a schoolbook text that includes multiple perspectives compared to a schoolbook history text containing fewer perspectives. Tenth grade students (N = 104) in four schools were randomly assigned to read one of two texts on the Dutch Revolt and asked to make a summary. Multiperspectivity was analysed through the representation of actors, aspects of scale, dimensions and historiography. The students working with the text having high multiperspectivity showed more perspectives in their representations. In the summaries, these students included significantly more perspectives than did the students using the text with fewer perspectives. Moreover, these students’ representations of the main actors were more nuanced. The students using the text with high multiperspectivity situated the conflict in a broader international context and integrated more historiographical dimensions. The insights generated by these outcomes emphasize the important role of textbooks when aiming to teach history from multiple perspectives.
相似文献16.
Kathryn Elizabeth Linder 《Discourse: Studies in the Cultural Politics of Education》2011,32(3):443-456
Through an application of Foucauldian theories of power and neoliberalism, this article employs an ascending analysis to identify an embedded neoliberal agenda within the documentary 2 Million Minutes. The author argues that this neoliberal agenda serves to support and maintain notions of international white supremacy as it assumes relationships between whiteness and success, American identity and privilege, and through its definition of the global economy as one in which all students can equally take part. By articulating how the film engages in techniques of biopower through a comparative portrayal of high school students from India, China, and the United States, the author argues that representations of education ‘realities’ should be examined and questioned in order to locate powerful and hidden hegemonies. 相似文献
17.
Sylvie Lomer 《Higher Education》2017,74(4):581-598
This article presents the results of a textual analysis conducted on policy discourses on international students in the UK between 1999 and 2013. A number of rationales for and against increasing their numbers have been made, which have largely remained consistent over changing political administrations. One key rationale is that international students enhance the UK’s global political influence through its soft power. Critical analysis indicates that a number of unsubstantiated assumptions are made, representing international higher education and students in an outdated power relation predicated on Cold War politics. Key assumptions are that international students change their political attitudes and identify with the host country as a result of positive experiences. Later they are supposed to return home and reach positions of influence, which they exert in favour of the UK. They are represented to feel the same whether on scholarship or self-funded; and behave in predictable, similar ways. These representations of students as social subjects have disciplinary implications, which should be a topic for critical debate and potentially resistance in pedagogical contexts. 相似文献
18.
ABSTRACTThe aim of the study is to analyse teachers’ efforts to develop secondary school students’ knowledge and argumentation skills of what constitutes scientific theories. The analysis is based on Leontiev’s three-level structure of activity (activity, action, and operation), as these levels correspond to the questions why, what, and how content is taught. The unit of analysis was a school development project in science education, where design-based interventions were conducted. Data comprised notes and minutes from eight meetings, plans, and video recordings of the lessons, and a written teacher evaluation. The teachers’ (n = 7) learning actions were analysed to identify (a) concept formation in science education, (b) expressions of agency, (c) discursive manifestations of contradictions, and (d) patterns of interaction during the science interventions. Three lessons on what constitutes scientific theories were implemented in three different student groups (n = 24, 23, 24), framed by planning and evaluation meetings for each lesson. The results describe (1) the ways in which teachers became more skilled at ensuring instruction met their students’ needs and (2) the ways in which teachers’ operations during instruction changed as a result of their developed knowledge of how to express the content based on theoretical assumptions. 相似文献
19.
Nancy W. Brickhouse Harry Shipman William J. Letts 《International Journal of Science Education》2013,35(6):735-755
This study explores college students' representations about the nature of theories during their enrollment in a large astronomy course with instruction designed to address a number of nature of science issues. We focus our investigation on how nine students represent their understanding of theory, how they distinguish between scientific theories and non‐scientific theories, and how they reason about specific theories. Students' notions of theory were classified under four main categories: (1) hypothesis, (2) idea with evidence, (3) explanation, and (4) explanation based on evidence. Students' condition for deciding whether a given idea is a scientific theory or not were classified under six criteria: content domain, convention, evidence, mathematical content, methodology, and tentativeness. Students expressed slight levels of variation between their reasoning about scientific theories in general and specific theories they learned in the course. Despite increased sophistication in some students' representations, this study affirms the complex dimensions involved in teaching and assessing student understanding about theories. The implications of this study underscore the need to explicitly address the nature of proof in science and issues of tentativeness and certainty students associate with scientific theories, and provide students with more opportunities to utilize the language of science. 相似文献
20.
Ying-Shao Hsu 《British journal of educational technology : journal of the Council for Educational Technology》2006,37(4):539-557
This paper presents the development and evaluation of a web‐based lesson—Lesson Rainbow. This lesson features multiple representations (MRs), which purposefully deliver concepts in relation to distinctive disciplinary subject areas through story‐based animations that are closely related to learners’ life experiences. The researchers selected 58 2nd‐year junior high school students as the participants (32 males and 26 females). A quasi‐experimental method together with semi‐structured interviews was utilised. This research project was intended to investigate students’ conceptual progress, and to evaluate the use of MRs and of situated learning components in the design of Lesson Rainbow. The statistical results indicated that: (1) students’ science concepts significantly increased (t= 3.84, p < 0.01) through the use of Lesson Rainbow, and (2) students thought that the use of MRs in this web‐based lesson was an effective pedagogical tool inasmuch as it allows for the learning of specific theoretical viewpoints in addition to the necessary background information. Lesson Rainbow employing MRs helps learners to understand the meanings of, and interrelationships between, different kinds of external representations. This kind of design facilitates their understanding of the correspondence between abstract symbolic expressions and real‐world situations. 相似文献