共查询到20条相似文献，搜索用时 31 毫秒
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Jeroen Janssen Gijsbert Erkens Paul A. Kirschner Gellof Kanselaar 《Instructional Science》2010,38(1):59-88
This research investigates the role of representational guidance by comparing the effects of two different representational
tools. We used a design with two different groups defined by the type of argumentative diagram students co-constructed while
working in a computer-supported collaborative learning (CSCL) environment. The Graphical Debate-tool offered different representational
guidance than the Textual Debate-tool. The results show that groups that worked with the Graphical Debate-tool constructed
representations of higher quality and wrote essays that were better in terms of grounds quality. Furthermore, working with
the Graphical Debate-tool was found to have a positive effect on students’ learning as measured by a knowledge post-test.
In contrast to our expectations however, there was little difference between the two conditions regarding the online collaboration
process. It can be concluded that representational guidance has an impact on group and individual performance and should therefore
be taken into account during instructional design. 相似文献
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Computer-supported collaborative learning (CSCL) environments provide learners with multiple representational tools for storing, sharing, and constructing knowledge. However, little is known about how learners organize knowledge through multiple representations about complex socioscientific issues. Therefore, the purpose of this study was to investigate learners’ knowledge organization (KO) through multiple representations in a CSCL environment. We designed a learning unit on nuclear energy and implemented it with a group of 20 college students. The participants used a web-based hypertext KO platform that incorporated three representational modes: textual, pictorial, and concept map. The platform interlinked learners’ knowledge entries based on similar keywords. Utilizing mixed methods research we analyzed the individual entries and the knowledge base to determine KO both at the individual and the collective levels. We found that the density of the knowledge base was high; the learners mostly benefited from their text- and concept map-based entries, though the picture-based entries were also an important means for connecting entries with similar content and hence creating a dense knowledge base. Our results suggest that KO with multiple representations can create a more comprehensive knowledge base. Using distinct analytical approaches will allow CSCL researchers to better identify KO both at the individual and collective levels. 相似文献
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Dealing with representations is a crucial skill for students and such representational competence is essential for learning science. This study analysed the relationship between representational competence and content knowledge, student perceptions of teaching practices concerning the use of different representations, and their impact on students' outcome over a teaching unit. Participants were 931 students in 51 secondary school classes. Representational competence and content knowledge were interactively related. Representational aspects were only moderately included in teaching and students did not develop rich representational competence although content knowledge increased significantly. Multilevel regression showed that student perceptions of interpreting and constructing visual-graphical representations and active social construction of knowledge predicted students' outcome at class level, whereas the individually perceived amount of terms and use of symbolic representations influenced the students' achievement at individual level. Methodological and practical implications of these findings are discussed in relation to the development of representational competence in classrooms. 相似文献
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A further study of productive failure in mathematical problem solving: unpacking the design components 总被引：1，自引：0，他引：1
Manu Kapur 《Instructional Science》2011,39(4):561-579
This paper replicates and extends my earlier work on productive failure in mathematical problem solving (Kapur, doi:, 2009). One hundred and nine, seventh-grade mathematics students taught by the same teacher from a Singapore school experienced
one of three learning designs: (a) traditional lecture and practice (LP), (b) productive failure (PF), where they solved complex
problems in small groups without any instructional facilitation up until a teacher-led consolidation, or (c) facilitated complex
problem solving (FCPS), which was the same as the PF condition except that students received instructional facilitation throughout
their lessons. Despite seemingly failing in their collective and individual problem-solving efforts, PF students significantly
outperformed their counterparts in the other two conditions on both the well-structured and higher-order application problems
on the post-test, and demonstrated greater representation flexibility in working with graphical representations. The differences
between the FCPS and LP conditions did not reach significance. Findings and implications of productive failure for theory,
design of learning, and future research are discussed. 相似文献
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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. 相似文献
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Existing research on students’ conceptions contain competing philosophical positions concerning the nature of students’ ideas—whether those ideas are coherent, systematic and theory-like, or fragmented and incoherent. Existing research has also focused primarily on studies of individual conceptions rather than investigating multiple, related conceptions. Nevertheless, there is wide agreement among researchers and teachers alike that the ideas students bring to a learning situation are fertile ground for investigation, and that students’ ideas should be taken into consideration when planning science instruction. The purpose of this study was to examine the representational, conceptual framework, and contextual consistency aspects of two students’ ideas across concepts of evaporation, condensation, and boiling. Knowing the consistency students express for each specific concept, and how well they integrate these related concepts, would offer insights that could potentially impact student learning. We present two case studies here that highlight the degree of consistency expressed by two students across different representations for each target concept and in instances where these conceptions are related to one another. Findings from this study highlight the need for attention to the consistency of students’ ideas across multiple, related concepts. Implications from this study support our recommendation for metaconceptual teaching strategies that would help students examine different representations for the same concept and also to examine the consistency of their ideas across multiple conceptions. 相似文献
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Martina A. Rau 《Educational Psychology Review》2017,29(4):717-761
Visual representations play a critical role in enhancing science, technology, engineering, and mathematics (STEM) learning. Educational psychology research shows that adding visual representations to text can enhance students’ learning of content knowledge, compared to text-only. But should students learn with a single type of visual representation or with multiple different types of visual representations? This article addresses this question from the perspective of the representation dilemma, namely that students often learn content they do not yet understand from representations they do not yet understand. To benefit from visual representations, students therefore need representational competencies, that is, knowledge about how visual representations depict information about the content. This article reviews literature on representational competencies involved in students’ learning of content knowledge. Building on this review, this article analyzes how the number of visual representations affects the role these representational competencies play during students’ learning of content knowledge. To this end, the article compares two common scenarios: text plus a single type of visual representations (T+SV) and text plus multiple types of visual representations (T+MV). The comparison yields seven hypotheses that describe under which conditions T+MV scenarios are more effective than T+SV scenarios. Finally, the article reviews empirical evidence for each hypothesis and discusses open questions about the representation dilemma. 相似文献
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Vaughan Prain Russell Tytler Suzanne Peterson 《International Journal of Science Education》2013,35(6):787-808
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. 相似文献
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This study evaluated students?? representational choices while they solved linear function problems. Eighty-six secondary-school students solved problems under one choice condition, where they chose a table, a formula, or both to solve each problem, and two no-choice conditions, where one of these representations was forced upon them. Two conceptualisations of representational flexibility were used: a groupwise conceptualisation, where group-based measures of students?? fluency with the different representations were used to determine which representational choices could be considered flexible, and an individualised conceptualisation, where each individual student??s fluency with each of the representations to solve each problem type was taken into account when determining which choices could be considered flexible for that particular student. A strong correlation between groupwise flexibility and choice condition accuracy, and an even stronger correlation between individualised flexibility and choice condition accuracy were found. The implications for research and instruction are discussed. 相似文献
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This article presents a designed learning environment intended to engage students in learning about the relationships among multiple representations as they work together on a shared task. Over the course of several extended problem-solving sessions, groups developed several successive alignments of participants and representations as they learned to solve increasingly difficult tasks. Our findings highlight the emergent and often unexpected meanings that learners established for representational tools as their groups reorganized into increasingly effective problem-solving ensembles. Our findings echo those of prior research regarding learners' considerable competence and creativity in interpreting and applying distributed representational tools, as well as the careful coordination among learners involved in establishing and acting on those interpretations. Challenges in this design space include instances in our data where students capitalized on connections among representations without really trying to understand those connections, temporarily undermined the distributed character of the representations, and worked more efficiently by reducing the number of participants actively involved in breaking codes. Our findings indicate that managing these challenges requires presenting groups with regular opportunities to reconsider and reorganize their roles, and to experiment with different meanings and uses of flexible tools in the context of tasks with carefully sequenced levels of difficulty. 相似文献
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The ontologies of complexity and learning about complex systems 总被引：1，自引：0，他引：1
This paper discusses a study of students learning core conceptual perspectives from recent scientific research on complexity
using a hypermedia learning environment in which different types of scaffolding were provided. Three comparison groups used
a hypermedia system with agent-based models and scaffolds for problem-based learning activities that varied in terms of the
types of text based scaffolds that were provided related to a set of complex systems concepts. Although significant declarative
knowledge gains were found for the main experimental treatment in which the students received the most scaffolding, there
were no significant differences amongst the three groups in terms of the more cognitively demanding performance on problem
solving tasks. However, it was found across all groups that the students who enriched their ontologies about how complex systems
function performed at a significantly higher level on transfer problem solving tasks in the posttest. It is proposed that
the combination of interactive representational scaffolds associated with NetLogo agent-based models in complex systems cases
and problem solving scaffolding allowed participants to abstract ontological dimensions about how systems of this type function
that, in turn, was associated with the higher performance on the problem solving transfer tasks. Theoretical and design implications
for learning about complex systems are discussed. 相似文献
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This article investigates the conditions under which diagrammatic representations support collaborative argumentation-based learning in a computer environment. Thirty dyads of 15- to 18-year-old students participated in a writing task consisting of 3 phases. Students prepared by constructing a representation (text or diagram) individually. Then they discussed the topic and wrote a text in dyads. They consolidated their knowledge by revising their individual representation. There were 3 conditions: Students could use either (a) the individual texts they wrote, (b) the individual diagrams they constructed, or (c) a diagram that was constructed for them based on the text they wrote. Results showed that students who constructed a diagram themselves explored the topic more than students in the other conditions. We also found differences in the way collaborating dyads used their representations. Dyads who engaged in deep discussion used their representations as a basis for knowledge construction. In contrast, dyads who engaged in only shallow discussion used their representations solely to copy information to their collaborative text. We conclude that diagrammatic representations can improve collaborative learning, but only when they are used in a co-constructive way. 相似文献
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Interacting with and translating across multiple representations is an essential characteristic of expertise and representational fluency. In this study, we explored the effect of interacting with and translating between representations in a computer simulation or in a paper-based assignment on scientific accuracy of undergraduate science students’ explanations regarding the underlying mechanisms of action potential. The study proposed that a simulation designed with scaffolded inquiry and with multiple dynamically linked representations fosters students to use greater scientific accuracy in speaking about a complex scientific phenomenon as well as to work with this complex knowledge in higher cognitive domains. Student explanations were analysed for use of accurate scientific language as they worked with the instructional tool as well as under test conditions. We also investigated the cognitive domain that students worked within as they created explanations of the phenomenon under study. The proportion of elaborations that occurred in higher-level cognitive domains such as applying, analysing, evaluating and synthesising was used to denote representational fluency. The rationale for this approach is discussed. Findings suggest that the simulation prompted students towards operating in higher cognitive domains in order to construct new knowledge and therefore promoted representational fluency. It also suggests that translating between representations in a simulation in a collaborative social setting contributes towards students’ use of accurate scientific language. Students’ perceptions expressed during the interviews confirmed the findings. 相似文献
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Because of the multimodal nature of learning, doing and reporting science, it is important that students learn how to interpret, construct, relate and translate scientific representations or, in other words, to develop representational competence. Explicit instruction about multimodal representations is needed to foster students’ representational competence in the classroom. However, only a handful studies have surveyed how representations are actually used in science classes. This might be because of the fact that economical instruments for assessing the use of representations in classrooms are not available. To bridge that gap, an instrument was developed, field-tested in biology classes with 175 and 931 students, respectively, and analysed using exploratory and (multilevel) confirmatory factor analyses. Results supported an instrument with six scales and 21 items at the individual and classroom levels covering the following dimensions: (1) interpretation of visual representations, (2) construction of visual representations, (3) use of scientific texts (verbal representations), (4) use of symbolic representations, (5) number of terms used in class, and (6) the extent to which active social construction of knowledge is possible in the class. The scales showed satisfactory discriminant validity and reliability at each level. Further applications of this instrument for researchers and teachers are discussed. 相似文献
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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. 相似文献
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Bas Kolloffel Tessa H. S. Eysink Ton de Jong Pascal Wilhelm 《Instructional Science》2009,37(6):503-517
The current study investigated the effects of different external representational formats on learning combinatorics and probability
theory in an inquiry based learning environment. Five conditions were compared in a pre-test post-test design: three conditions
each using a single external representational format (Diagram, Arithmetic, or Text), and two conditions using multiple representations
(Text + Arithmetic or Diagram + Arithmetic). The major finding of the study is that a format that combines text and arithmetics
was most beneficial for learning, in particular with regard to procedural knowledge, that is the ability to execute action
sequences to solve problems. Diagrams were found to negatively affect learning and to increase cognitive load. Combining diagrams
with arithmetical representations reduced cognitive load, but did not improve learning outcomes. 相似文献
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Florence R. Sullivan Claire E. Hamilton Danielle A. Allessio Rachel J. Boit Alexandra D. Deschamps Tony Sindelar German E. Vargas Ramos Anthony Randall Nicholas Wilson Yan Zhu 《Educational technology research and development : ETR & D》2011,59(5):619-644
In this paper we report the results of a study which investigated the affordances of multi-user virtual environments (MUVEs)
for collaborative learning from a design perspective. Utilizing a mixed methods approach, we conducted a comparative study
of the effect of varying representational and interactional design features on a collaborative design activity in three online
synchronous environments. We compared environments featuring multiple modes of interaction (MUVEs), shared representations
(text chat and 2D still images) and text-only features. Sixty-one students enrolled in an undergraduate course on Child Development
participated in the study. Participants were asked to design a theoretically-based, developmentally appropriate, preschool
classroom setting. Students were randomly assigned to one of three online learning environments that provided varying levels
of representation and interaction. Significant differences in collaborative problem solving interactions were found. Participants
in the shared representations + text condition evidenced stronger learning outcomes as regards substantive discussion and
integration of child development concepts; while participants in the MUVE condition reported the most enjoyment with the experience.
These findings are explained by the concepts of representational guidance, representational bias, educational affordances
and interface design metaphors. Suggestions for the design of MUVEs for collaborative learning are provided. 相似文献
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Prior research shows that representational competencies that enable students to use graphical representations to reason and solve tasks is key to learning in many science, technology, engineering, and mathematics domains. We focus on two types of representational competencies: (1) sense making of connections by verbally explaining how different representations map to one another, and (2) perceptual fluency that allows students to fast and effortlessly use perceptual features to make connections among representations. Because these different competencies are acquired via different types of learning processes, they require different types of instructional support: sense-making activities and fluency-building activities. In a prior experiment, we showed benefits for combining sense-making activities and fluency-building activities. In the current work, we test how to combine these two forms of instructional support, specifically, whether students should first work on sense-making activities or on fluency-building activities. This comparison allows us to investigate whether sense-making competencies enhance students’ acquisition of perceptual fluency (sense-making-first hypothesis) or whether perceptual fluency enhances students’ acquisition of sense-making competencies (fluency-first hypothesis). We conducted a lab experiment with 74 students from grades 3–5 working with an intelligent tutoring system for fractions. We assessed learning processes and learning outcomes related to representational competencies and domain knowledge. Overall, our results support the sense-making-first hypothesis, but not the fluency-first hypothesis. 相似文献