Effects of representational guidance during computer-supported collaborative learning

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.     

The role of diagrams in collaborative argumentation-based learning

In this article two studies on the use of diagrams in computer-supported collaborative learning are compared. Focus is on the way argumentative diagrams can be used during collaborative learning tasks, more specifically how diagrams support argumentative interaction between students when they discuss ill-defined topics. The main goal is to discover how diagram construction before discussion, and diagram construction during discussion, influence the way students explore the space of debate during discussion. Twenty pairs of 16/17-year-old students were randomly selected from 126 pairs. Ten pairs worked with a diagram before discussion and ten during discussion. The research showed that students use diagrams in very different ways, ranging from a means for talking to just a notebook. Our expectation that using a diagram during discussion leads to more depth in discussion than using one before discussion, was not confirmed. Possible explanations for this finding are structure of the task, and the way students interpreted the goal of the task.     

Student' Strategic Actions in Computer-Supported Collaborative Learning

Computer-Supported Collaborative Learning (CSCL) can be a powerful tool in creating learning communities in which students have a chance to construct knowledge collaboratively and to develop explanations of the subject to be studied. It is obvious, however, that collaborative inquiry is a cognitively-challenging task for an individual student. More evidence on the nature and quality of students' actions and strategic processes in CSCL is needed to make these models more applicable in different domains of classroom learning. The aim of this study was to analyse students' strategic actions in Computer-Supported Collaborative Learning. Eighteen secondary school students, ages 13–14 years, participated in CSCL inquiries in their literature class. The networked technology environment used was CSILE. The students had three inquiry-based CSCL projects, each lasting for six weeks. The data-collection procedures used were questionnaires, students' written computer notes and repeated process-oriented interviews. The results show the dominance of a superficial approach toward inquiry. This is evidenced by the students' fact-oriented computer notes and their self-reported, surface-level strategic actions. However, the results show a growing amount of collaborative discussion in the networked database. Collaborative networked discussions manifest an increase in deeper-level cognitive strategies and progressive student inquiries. This revised version was published online in July 2006 with corrections to the Cover Date.     

An instrument for analysing students’ argumentative reasoning when participating in debates

The aims of this paper are twofold. First, we present, justify, and characterise an instrument for analysing students’ argumentative reasoning developed from Walton’s ideas. Then, from the analysis of students’ argumentative discussion about a socio-scientific controversy, we identify the advantages and disadvantages of using the instrument. The results show that the analysis of students’ argumentative reasoning require nine stages, which have logical and pragmatic criteria that should be used in order to decrease the subjectivity of the analysis. The analysis sheds light on the characterisation of students’ argumentative reasoning by supporting the understanding of the move of students’ argumentative clusters, since it enables us to understand that: the argumentative quality depends on the relations between arguments and other statements; and an argumentative cluster can be developed according to the frequency of refutations or attacks by means of questions involving its constituents. This is because when arguments, questions, and/or claims are evaluated, the individuals have the possibility of bringing other reasons and/or arguments that support them in the discussion. Therefore, the main contribution of this study is the development of an instrument, based on dialectical principles, that contributes to analyse students’ argumentative discuss and to support discussions of their argumentative quality.     

Identifying paralogisms in two ethnically different contexts at university level / Identificación de paralogismos en dos contextos universitarios diferenciados étnicamente

Abstract

Although educational researchers have long tried to answer the question ‘Who reasons well?’, little has been done in regards to the influence of culture on argumentative reasoning quality. Among the factors that have been related with the construction of valid arguments, counterarguments and rebuttals by adults are: explicit argument training, task instructions and prior knowledge. No clear evidence exists regarding the influence of the ethnical background on the flaws or fallacies of reasoning. The present study applies the recent theory of paraschemes as a tool to identify university students’ paralogisms in a common argument-mapping task on everyday issues in two different cultural contexts: one European (Spain) and one Middle Eastern (United Arab Emirates). Our analysis showed that the influence of ethnical background was not statistically significant regarding the type and amount of paralogisms committed. On the contrary, the participants’ study major, being business or education, was shown to influence the production of argument fallacies. Implications of these findings for higher education are discussed.     

Representational Issues in Students Learning About Evaporation

This study draws on recent research on the central role of representation in learning. While there has been considerable research on students’ understanding of evaporation, the representational issues entailed in this understanding have not been investigated in depth. The study explored students’ engagement with evaporation phenomena through various representational modes. The study indicates how a focus on representation can provide fresh insights into the conceptual task involved in learning science through an investigation of students’ responses to a structured classroom sequence and subsequent interviews over a year. A case study of one child’s learning demonstrates the way conceptual advances are integrally connected with the development of representational modes. 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.     

An examination of the instruction provided in Australian essay guides for students’ development of a critical viewpoint

The argumentative essay has endured as a popular form of university assessment, yet students still struggle to meet key intended learning outcomes, such as those associated with critical thinking. This paper presents the results of a study that examines the instruction provided by Australian essay writing guides to support students’ development of a questioning, critical viewpoint. Thirty publically available guides were chosen from a range of university types, and sourced from central student learning units and humanities disciplines. Findings of this documentary analysis show that some guides provide too little context for essay writing as an academic practice, and conceptualise definitional, instructional and procedural aspects of the task in ways that may not align with intended outcomes. The conclusion indicates a need for further research about the teaching of argumentative essay writing.     

The roles of collective task value and collaborative behaviors in collaborative performance through collaborative creation in CSCL

Research has suggested that self or co-regulated learning is very helpful for the development of students’ autonomy, and is particularly important in online learning environments, because such non-linear environments tend to lack focus and teachers’ monitoring. The social cognitive research suggests that highly self-regulated learners have higher motivation and more control of their learning behaviors, and thus generate better outcomes on an individual basis rather on a group basis. This study thus attempts to extend the social cognitive perspective of self-regulated learning to collective regulated learning, and to investigate the relationships among collective beliefs (i.e., collective task value, a newly developed group motivation), collaborative behaviors (i.e., group cohesion, cognitive quality of collaborative interactions), and collaborative performance through collaborative creation in the CSCL environment. A total of 96 college students participated in this study. Both quantitative and qualitative analyses were applied. The results indicate that collective task value is a reliable and valid construct. The results also show that collective task value significantly predicts students’ group cohesion and collaborative performance, although it does not predict students’ cognitive quality of collaborative interactions. Students’ group cohesion and higher level of cognitive quality in collaborative interactions also both significantly predict their collaborative performance through collaborative creation in the CSCL environment.     

The Effect of Task Instructions on Students’ Use of Repetition in Argumentative Discourse

The reasoning belief of argumentum ad nauseam assumes that when someone repeats something often enough, he or she becomes more convincing. The present paper analyses the use of this strategy by seventh-grade students in an argumentation task. Sixty-five students (mean age: 12.2, SD?=?0.4) from a public school in a mid-sized urban environment took part in the study. The students were asked to either argue to convince an opposing partner or argue to reach consensus with an opposing partner on three dilemmas that dealt with energy sources. Data were gathered according to a between-groups design that included one independent variable (argumentative goal: to convince vs. to reach consensus) and one dependent variable (the degree of argumentative repetitions). We predicted that in the condition to convince their partner, the students would use the repetition strategy more often in their attempts to be persuasive. Our findings show that the mean number of argumentative repetitions was significantly higher for the persuasion group for both of the most frequent argumentative structures (claim and claim data). The mean percentage of repeated claims for the persuasion condition was 86.2 vs. 69.0 for the consensus condition. For the claim data, the mean percentage for the persuasion group was 35.2 vs. 24.3 for the consensus group. Also, students in the persuasion group tended to repeat one idea many times rather than repeating many ideas a few times within the same argumentative structure. The results of our study support the hypothesis that the goal of the argumentative task mediates argumentative discourse and, more concretely, the rate of repetitions and the conceptual diversity of the statements. These differences in rates of repetition and conceptual diversity are related to the amount of learning produced by the instructional goal. We apply Mercer's idea that not all classroom argumentation tasks promote learning equally.     

Educating the Developing Mind: Towards an Overarching Paradigm

This essay first summarizes an overarching theory of cognitive organization and development. This theory claims that the human mind involves (1) several specialized structural systems dealing with different domains of relations in the environment, (2) a central representational capacity system, (3) general inferential processes, and (4) consciousness. These systems interact dynamically during development so that changes in each are related to changes in others. The changes in all systems and the change mechanisms are described. This theory integrates research and theorizing from cognitive, developmental, and differential psychology. Based on this theory, a model for education is proposed that specifies, first, educational priorities for different phases of development according to the cognitive developmental milestones associated with each phase. The theory also specifies how education can educate students to (1) construct mental models for the sake of conceptual change, (2) use their central representational capacity efficiently, (3) advance analogical and deductive reasoning, (4) learn how to learn, and (5) become critical and creative thinkers. The theory is offered as an overarching paradigm for the architecture, the development, and the education of the human mind.     

Activating Students’ Argumentative Resources on Socioscientific Issues by Indirectly Instructed Reasoning and Negotiation Processes

The present study analyses the impact of negotiation processes on activating argumentative resources for decision-making in a socioscientific issue (SSI) in biology classes. The research focuses on the potential of group-based negotiation processes to activate the use of relevant argumentative resources without any prescribed or explicit instructions on these resources and arguments. In the corresponding intervention with a pre-post-design, students are encouraged to reason and weight their own arguments, which are based on protecting local biodiversity. The students have to reason and weight individually (pre-phase) immediately before they discuss their own reasoning and weighting with others in groups (treatment). The students have to then, once again, reason and weight their arguments individually (post-phase). The students are instructed, during these three steps (pre-phase, treatment, post-phase), using an educational tool, target-mat, which structures the reasoning and weighting visually, but does not prescribe the way of argumentation. By analysing the students’ argumentative resources, normative and fact-based elements can be measured immediately before and after the negotiation process. In terms of the pre-phase, the use of differing and appropriate argumentative resources can be analysed in relation to different arguments. The pre- and post-comparison reveals relevant changes leading to a substantial increase of the quality of reasoning. Therefore, in a student-centred decision-making process with minimal guidance, students are encouraged to become aware of the appropriateness of different argumentative resources.

     

论文章逻辑结构的分析

“文章的逻辑结构”有三种含义:(1)篇章的逻辑结构(包含任何文体);(2)客观历史过程在人的思维中反映,又表现在文献中的结构;(3)议论文或其他文体议论部分的逻辑论证结构。分析文章逻辑结构的步骤:第一步,分析整体结构;第二步,分析部分结构;第三步,分析文章的论证性。分析文章逻辑结构的方法有找中心论题的方法、找主要论据的方法、确定论证方式的方法等。     

Using virtual microscopy to scaffold learning of pathology: a naturalistic experiment on the role of visual and conceptual cues

New representational technologies, such as virtual microscopy, create new affordances for medical education. In the article, a study on the following two issues is reported: (a) How does collaborative use of virtual microscopy shape students’ engagement with and learning from virtual slides of tissue specimen? (b) How do visual and conceptual cues scaffold students’ reasoning? Fifteen pairs of medical students participated in two sessions in which the students used a virtual microscope as a diagnostic tool in the context of learning pathology. The slides provided the students with varying levels of visual and conceptual cueing. The sessions were videotaped, and the students’ reasoning while using the microscope was analysed. The students’ written answers were analysed in terms of the findings they made and the diagnoses suggested. At a general level, the results show that students engage actively in this kind of virtually-mediated environment. The visual and/or conceptual cues improve students’ performance, and guide the students’ perception and reasoning in a manner that is productive from the point of view of learning to make clinically relevant observations. Scaffolding students’ reasoning process through cues furthermore assists the students in avoiding the most obvious pitfalls such as overlooking critical areas of a specimen. Overall, visual and conceptual cues improve students’ reasoning in perceptual and cognitive terms, while still allowing space for the making of “relevant mistakes” that may further the students’ diagnostic skills.     

Teachers as Designers of Learning Environments

Abstract

This study examined how six Singapore teachers approached the design and implementation of a unit of work (topic) to demonstrate exemplary classroom practices that engage learners and use ICT in knowledge-generative rather than presentational activities. After a reflection and feedback session on the first lesson observation involving the researcher and the teacher, the teacher redesigned the lesson to enhance ICT use and involve students more actively in their learning. Our study revealed that there is a difference between students' physical engagement and cognitive engagement in a task and that the teacher, as a designer of the learning environment, needs to make explicit the cognitive processes involved in using the tool to ensure students' effective use of ICT. The teachers' understanding of what constitutes effective learning and their roles in students' learning determine how they design the learning environment. In essence, it is the teacher's skill in managing the “tripartite” partnership of IT tool, learning task, and teacher support that brings about higher levels of student engagement.     

Knowledge organization through multiple representations in a computer-supported collaborative learning environment

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.     

Representational Tools in Computer-Supported Collaborative Argumentation-Based Learning: How Dyads Work With Constructed and Inspected Argumentative Diagrams

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.     

Prejudiced,historical witness,and responsible: Collective memory and liminality in the Beit Hashoah museum of tolerance

In terms of collective memory, few issues match the import of the representation of the Holocaust and the ways in which such collective memory is presented is often fraught with controversy. A recent controversial site of memory is the Simon Wiesenthal Center's Museum of Tolerance in Los Angeles. This essay examines the representational strategies of the museum, arguing that its critics have failed to consider important aspects of the museum's representational practices. Specifically, the museum's representation of the Holocaust involves liminality, structured to engage audiences, preserving the Holocaust as a profoundly important historical event while emphasizing personal responsibility in the prevention of hatred, violence, and genocide. By exploring the museum's novel approach of leading visitors through breach, liminality, and reintegration, we may better understand the ways in which historical presentations can accentuate a liminal and thus a potentially significant experience with the past, and we may learn more about how collective remembrance can be promoted to encourage contemporary responsibility.     

IMPACT OF A REPRESENTATIONAL APPROACH ON STUDENTS’ REASONING AND CONCEPTUAL UNDERSTANDING IN LEARNING MECHANICS

The aim of this study was to explore whether a representational approach could impact on the scores that measure students’ understanding of mechanics and their ability to reason. The sample consisted of 24 students who were undergraduate, preservice physics teachers in the State University of Malang, Indonesia. The students were asked to represent a claim, provide evidence for it, and then, after further representational manipulations, refinement, discussion, and critical thought, to reflect on and confirm or modify their original case. Data analysis was based on the pretest–posttest scores and students’ responses to relevant phenomena during the course. The results showed that students’ reasoning ability significantly improved with a d-effect size of 2.58 for the technical aspects and 2.51 for the conceptual validity aspects, with the average normalized gain being 0.62 (upper–medium) for the two aspects. Students’ conceptual understanding of mechanics significantly improved with a d-effect size of about 2.50 and an average normalized gain of 0.63. Students’ competence in mechanics shifted significantly from an under competent level to mastery level. This paper addresses statistically previously untested issues in learning mechanics through a representational approach and does this in a culture that is quite different from what has been researched so far using student-generated representational learning as a reasoning tool for understanding and reasoning.