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1.
This study investigated the effects of different teaching and learning methods for statistics for 2 levels of prior knowledge on cognitive load, propositional knowledge, and conceptual understanding. Teaching methods were whether or not to provide students with propositional information, and learning strategies were self-explaining the learning material and explaining in pairs. The results indicate that prior knowledge facilitates propositional knowledge development and leads to differential effects of teaching and learning methods on conceptual understanding: Only low prior knowledge students profit from additional information in the learning task and/or explaining in pairs. An implication of these findings is that low prior knowledge students should be guided into the subject matter by means of working in pairs on learning tasks that comprise additional information. Once students have developed more knowledge of the subject matter, they should be stimulated to work individually on learning tasks that do not comprise additional information.  相似文献   

2.
Self-explanation in the domain of statistics: an expertise reversal effect   总被引:1,自引:0,他引:1  
This study investigated the effects of four instructional methods on cognitive load, propositional knowledge, and conceptual understanding of statistics, for low prior knowledge students and for high prior knowledge students. The instructional methods were (1) a reading-only control condition, (2) answering open-ended questions, (3) answering open-ended questions and formulating arguments, and (4) studying worked-out examples of the type of arguments students in the third group had to formulate themselves. The results indicate that high prior knowledge students develop more propositional knowledge of statistics than low prior knowledge students. With regard to conceptual understanding, the results indicate an expertise reversal effect: low prior knowledge students learn most from studying worked-out examples, whereas high prior knowledge students profit most from formulating arguments. Thus, novice students should be guided into the subject matter by means of worked-out examples. As soon as students have developed more knowledge of the subject matter, they should be provided with learning tasks that stimulate students to solve problems by formulating arguments.  相似文献   

3.
《Learning and Instruction》2003,13(2):141-156
This paper presents an integrated view of learning from verbal and pictorial representations. Learning from these representations is considered as a task oriented process of constructing multiple mental representations. Construction of these representations includes information selection and information organisation, parsing of symbol structures, mapping of analog structures as well as model construction and model inspection. Based on this theoretical view an experiment was conducted to analyse the effects of different kinds of multiple external representations on the structure of mental models. Sixty university students were randomly assigned to one of the three experimental conditions. The text-only group learned the subject matter with a hypertext, whereas the other two groups learned the subject matter with a hypermedium including this hypertext and different kinds of graphics. The findings indicate that the structure of graphics affects the structure of the mental model. They also indicate that presenting graphics is not always beneficial for the acquisition of knowledge. Whereas task-appropriate graphics may support learning, task-inappropriate graphics may interfere with mental model construction.  相似文献   

4.
The Cognitive-Situative Divide and the Problem of Conceptual Change   总被引:1,自引:1,他引:0  
In this article we argue that both the cognitive and situative perspectives need to be modified to account for the empirical evidence on learning, taking as a central example the problem of knowledge transfer. Our proposal is that we need an approach that takes as a unit of analysis the individual in a constructive interaction with the world through a variety of mediated symbolic structures, some internal and some external, in rich sociocultural settings. This should be done without denying that knowledge can be represented in some form in the memory system. While internal mental structures are acceptable in this framework, concepts should not be seen as stable and unchanging but, rather, as flexible, malleable, and distributed. To explain conceptual change, we should allow for the possibility that what is already known can be radically restructured and that new, qualitative different structures emerge. Teaching for conceptual change, we argue, should utilize but cannot solely rely on cognitive apprenticeship types of methods. Attention must be paid to the appropriate design of curricula and to the acquisition of subject matter knowledge, together with the development of instructional methods that utilize socio-cultural processes, like classroom discussion, to develop students' metaconceptual awareness and the ability to engage in intentional learning.  相似文献   

5.
Computer-based multimedia learning environments make it possible to present interactive animated pictures, which can be manipulated for active exploratory learning and which allow the dynamic behavior of complex subject matter to be displayed. Due to the large range of possibilities for exploratory interaction, such learning environments seem well suited for co-operative learning in which different learners analyse the presented subject matter from different perspectives. This paper first describes a theoretical framework for learning from texts and pictures together with an analysis of possible effects of animation and interactivity on knowledge acquisition. It then presents two empirical studies in which knowledge acquisition from interactive animated pictures was compared with knowledge acquisition from static pictures under the conditions of individual learning (Study I) and of cooperative learning (Study II). In Study I, learning with interactive animated pictures resulted in a superior encoding of detail information, but did not facilitate performance of mental simulation tasks. In Study II, learning with interactive animated pictures resulted both in inferior encoding of detail information and poorer results in mental simulations. These findings and the analysis of discourse protocols of subjects’ co-operation suggest that exploratory learning with interactive animated pictures is associated with extraneous cognitive load and that this load can be further increased by the co-ordination demands of co-operative learning. Although animated pictures may provide external support for mental simulations, they do not appear to be generally beneficial for learning, because they can prevent individuals from performing relevant cognitive processes.  相似文献   

6.
This article investigates whether different formats of visualizing information result in different mental models constructed in learning from pictures, whether the different mental models lead to different patterns of performance in subsequently presented tasks, and how these visualization effects can be modified by further external representations during task performance. A total of 80 university students learned from an illustrated text different day times and different dates exist simultaneously on the earth. One half of the participants received the text combined with pictures visualizing the earth as a kind of carpet (carpet pictures), whereas the other half received the text combined with pictures visualizing the earth surface as a circle (circle pictures). After learning, the participants received a test including different kinds of tasks. In both visualization groups, one half of the participants solved the tasks with an additional external representation, whereas the other half solved the tasks without an external representation. The findings indicate that the form of visualization affects the structure of mental models. Different structures of mental models result in different patterns of performance, when individuals solve tasks based only on their mental representations acquired during their previous learning. However, these effects decrease, when further external representations are made available to the learners. The findings are discussed within a broader framework of learning with multiple external representations.  相似文献   

7.
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   

8.
The purpose of this study was to assess the development and changes in preservice science teachers' subject matter and pedagogy knowledge structures as they proceeded through a professional teacher education program. Twelve secondary preservice science teachers were asked to create representations of their subject matter and pedagogy knowledge structures periodically (four times spanning the entirety of their subject-specific teacher education program) and participate in a videotaped interview concerning the eight knowledge structure representations immediately following student teaching. Qualitative analyses of knowledge structure representations and transcribed interviews within and between subjects were performed by one of the researchers and “blindly” corroborated by the other two researchers. Initial knowledge structure representations were typically linear and lacked coherence. Both types of knowledge structure representations were highly susceptible to change as a consequence of the act of teaching. Although there was some overlap between subject matter and pedagogy knowledge structures, they were reported to exert separate influences on classroom practice, with the pedagogy knowledge structure having primary influence on instructional decisions. Furthermore, the complexity of one's subject matter structure appeared to be a critical factor in determining whether the structure directly influences classroom practice.  相似文献   

9.
Tao, Oliver, and Venville’s paper addresses a debate between two hypotheses of children’s development of conceptual understandings of the Earth. The authors aim to investigate whether culture influences students’ conceptions of the Earth. However, one questionable assumption shared among conception and conceptual change studies is that researchers can identify children’s mental models, through their discourse, to explain their conceptions of scientific phenomena. In this commentary, I challenge this assumption by looking closely at various interview data and examining different dimensions of interview discourse about the Earth. Based on my findings, I suggest that instead of seeing science talk as representations of mental models, we look at children’s science talk as discursive practices mediated by the immediate social situation and the broader social milieu.  相似文献   

10.
《Learning and Instruction》2003,13(2):227-237
Multimedia learning environments combine multiple forms of representations like texts, static and animated pictures or graphs. Knowledge acquisition from multiple representations requires that the learner create referential connections between corresponding elements and corresponding structures in different representations. As this process is usually difficult, learners frequently fail to construct coherent mental representations and, thus, do not sufficiently understand the subject matter. This paper analyzes the effects of different kinds of instructional help on the process of coherence formation from multiple representations by learners with different prior knowledge. Three groups of university students with different domain-specific knowledge had to learn a complex subject matter from chemistry using six different forms of representation. In addition, a first group received directive help for coherence formation. A second group received non-directive help, and a third group received no instructional help. Results indicate that directive help is effective for recall performance because of its summarizing and repeating function. Furthermore, learners with different levels of prior knowledge show different reactions when help is given. For learners with insufficient prior knowledge help is not helpful or, in case of recall performance, even harmful. Learners with a medium level of prior knowledge can increase especially their comprehension performance when help is offered, whereas learners with too much prior knowledge seem not to be affected by help.  相似文献   

11.
In his presentation of the propositional account of associative learning, De Houwer (2009) argues that association formation models (AFMs) assume excitatory link representations and automatic learning processes. However, the application of AFMs to human causal and contingency learning has assumed propositional forms of representation, although excitatory link representations are also required to explain certain nonrational consequences of associative learning. Moreover, at least two of the AFMs that have been applied to human associative learning invoke processing with nonautomatic characteristics. In conclusion, the distinction between the propositional account and AFMs of associative learning lies not in the form of representations but in the specific details of the learning processes generating the associative representations.  相似文献   

12.
The paper addresses a major fissure in the sociology of knowledge with respect to the theories of knowledge which inform teaching and learning. Instructional teaching, or ‘teaching knowledge to the child’, is compared to facilitation teaching, the ‘teaching the child’ approach to show the extent to which their differences are the result of very different understandings of how knowledge is constituted. In turn, these understandings about knowledge are implicated in major differences about the purpose that education serves in modern society. It is argued that the link between the way knowledge is structured and the way it is organised for teaching justifies instructional teaching as the more effective way to develop students’ learning. This learning is demonstrated in the subject mastery acquired as students connect propositional knowledge to practice knowledge. The facilitation approach is considered to be weak because it is primarily a pedagogical approach concerned with motivating students and fails to account for the type of knowledge that constitutes academic subjects. The paper makes a further claim for the importance of instructional teaching in modern society to argue that the identity of the modern, rational individual depends upon the direct teaching of abstract epistemically structured knowledge to successive generations. These collective representations which constitute the symbolic sphere, support the moral cohesion of democratic pluralistic societies.  相似文献   

13.
In this paper we propose a Cultural Psychology approach to teacher knowledge which assumes that: 1) mental representations are directly observable, and 2) the relationship between different kinds of representations is co-mediational. The paper sets out such an approach, providing arguments to support these two alternative premises; outlining a methodology, based on social linguistics, for the direct observation of representations; and articulating the relationship between three types of representations: situational representations, specific propositional representations, and general propositional representations. We discuss the implications of this approach for research and practice in teacher education.  相似文献   

14.
15.
Project-based learning is undoubtedly one of the best instructional methods for developing students’ broad learning capabilities, beyond teaching specific subject matter. However, experienced engineering teachers often tend to concentrate on merely teaching pupils the technical side of project work. This paper describes a programme aimed at fostering self-regulated learning among high schools pupils working on projects in electronics, control systems and robotics. The programme sought, for example, to promote pupils’ conceptual knowledge regarding the subjects they dealt with in their projects, enabling the learners to gain experience using simulation, laboratory testing and troubleshooting in a system that they were constructing. The change in project work also required pupils to document systematically all stages of system development and reflect on their learning by preparing a printed or web-based ePortfolio on the project. Outcomes of the in-service training course given to teachers countrywide and the first signs of change in project work in schools are reported.  相似文献   

16.
Privileged (typical, basic-level) representations are cognitive representations in which figurative features play a significant part. We specifically consider studies on the conventional point of view in object perception (Palmer, Rosch, & Chase, 1981). We propose an analysis of solid geometrical problems in the field of typicality theory and more generally in the theoretical field of mental models. Applied to this geometrical domain, the analysis suggests that individual cognitive representations — corresponding with different points of view from which a figure can be seen — are more or less representative examples of the category, that is to say they correspond more or less with the mental model built by the subject in this domain. Task 1 emphasizes the most representative point of view for four solid geometrical figures chosen by the experimenter. Then, we analyse two tasks on each figure from both the typical and non typical points of view. Errors occur most frequently when the geometrical figure is seen from its non typical viewpoints. Particular attention should be paid to this factor in analysing errors made by subjects.  相似文献   

17.
The temporal-difference (TD) algorithm from reinforcement learning provides a simple method for incrementally learning predictions of upcoming events. Applied to classical conditioning, TD models suppose that animals learn a real-time prediction of the unconditioned stimulus (US) on the basis of all available conditioned stimuli (CSs). In the TD model, similar to other error-correction models, learning is driven by prediction errors-the difference between the change in US prediction and the actual US. With the TD model, however, learning occurs continuously from moment to moment and is not artificially constrained to occur in trials. Accordingly, a key feature of any TD model is the assumption about the representation of a CS on a moment-to-moment basis. Here, we evaluate the performance of the TD model with a heretofore unexplored range of classical conditioning tasks. To do so, we consider three stimulus representations that vary in their degree of temporal generalization and evaluate how the representation influences the performance of the TD model on these conditioning tasks.  相似文献   

18.
We offer a new approach to emergent knowledge in processes of conceptual change in dyadic interaction by drawing on Pickering’s (The Mangle of Practice, The University of Chicago Press, London, 1995) Mangle of Practice theory, which theorizes the emergence of new scientific knowledge as occurring due to material resistance and human accommodations to such resistance. We use Commognition (Sfard in Thinking as communicating, Cambridge University Press, New York, 2008), which conceptualizes learning as a change in discourse, and conceptual change as change in meta-discursive rules, to examine the interaction between several dyads working on proportional reasoning tasks. These dyads were selected for close scrutiny based on a large previous experimental study designed to examine the most productive constellation for pairing students of different levels with or without a hypothesis testing device. The Mangle helps us theorize the emergent, unpredictable aspects of learning and conceptual change. We provide three criteria for examining the productivity of the interaction: Availability of an alternative discourse (proportional vs. additive), Resistance of material/disciplinary agency and Positioning of students to make meta-discursive shifts. We discuss this model as an aid for monitoring and designing learning situations that enhance conceptual change.  相似文献   

19.
《Learning and Instruction》2000,10(4):311-330
In this article we present the results of an experimental study of the influence of task characteristics on the characteristics of elaboration of conceptual knowledge in social interaction. With a pre-test and post-test we measured individual learning outcomes. We constructed a coding scheme that focuses on the communicative functions and propositional content of utterances and on elaborative episodes. The subjects were 40 students who worked in dyads on a collaborative task about electricity in one of four conditions. We compared a concept mapping task with a poster task and investigated the effect of a phase of individual preparation. The post-test scores were significantly higher than the pre-test scores. Individual preparation created better learning results and the asking of more questions. The concept mapping conditions showed more discussion of electricity concepts, collaboratively elaborated conflicts and reasoning, but no higher individual learning outcomes. In the concept mapping conditions, elaboration was related to individual learning outcomes.  相似文献   

20.
We argue that learning science requires children to move from perceptually based representations to more abstract conceptual representations and to understand that appearance may sometimes deceive us and that the same phenomenon in the world can have more than one representation when seen from different perspectives. We also argue that the beginnings of such an epistemological perspective can be found in young children’s ability to think about the difference between their beliefs and the beliefs of others in the social domain, i.e., their Theory of Mind. We present the results of two empirical studies that show significant correlations between children’s growing Theory of Mind, developing epistemological thinking, and science learning, and suggest that Theory of Mind tasks can be used to promote conceptual change in science.  相似文献   

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