Hybrid discourse practice and science learning

In this article, we report on a study of how creative linguistic practices (which we call hybrid discourse practices) were enacted by students in a fifth-grade science unit on barn owls and how these practices helped to produce a synergistic micro-community of scientific practice in the classroom that constituted a fertile space for students (and the teacher) to construct emergent but increasingly legitimate and dynamic disciplinary knowledges and identities. Our findings are important for the ways in which they demonstrate (a) how students use hybrid discourse practices to self-scaffold their work within complex curricular tasks and when they are not completely sure about how to enact these tasks (b) how hybrid discourse practices can promote inquiry orientations to science, (c) how hybrid discourse practices index new and powerful forms of science pedagogy, and (d) how hybrid discourse practices are relevant to more global issues such as the crucial roles of language fluency and creativity, which are known prerequisites for advanced science learning and which aid students in developing skills that are necessary for entry into science and technology careers.     

国外对教科书性别偏见的话语角色分析及启示

教科书话语角色分析有助于发现书中隐含的性别偏见,表现为男女在对话数量、社会期望、交际功能等方面的差异。以英国高校希腊语教科书为例,国外对教科书性别偏见的话语角色分析在样本选取、框架建构、技术运用和结果阐释等方面为我国教科书性别意识研究提供了有益启示：关注教科书中的对话内容,展开形式与功能的全面分析,结合社交情境探索男女差异,用多学科视角诠释分析结果。     

The expositive discourse as pedagogical discourse: studying recontextualization in the production of a science museum exhibition

In this paper I report on the sociological and educational particulars of The Biodiscovery Space exhibition of the Life Museum of the Oswaldo Cruz Foundation in Rio de Janeiro, Brazil, using Basil Bernstein’s framework of pedagogic discourse and recontextualization. Data for analysis was obtained from interviews with the exhibition developers, field observations of museum visitors and analysis of exhibition documents. Using the ideas of power, classification and framework, among others, I analyzed the recontextualization process of the production of expositive discourse. Thus, working with Bernstein’s idea of classification, I explain the relationship between the discourses of the science of biology, history of science, museology, education, and communication in order to produce an expositive discourse. I also make explicit how agents of the Official Recontextualization Field of the Museum and the Pedagogic Recontextualization Field “....of the Museum determine partly the final expositive discourse of an exhibition”. Using the idea of a pedagogic discourse framework, I discuss how the constraints imposed by objects and texts in exhibitions help to create a specific manner of visitor interaction with these elements, “even if they have some autonomy”. Considerations about the audience and the intended process of acquisition are presented, when I discuss the control strategies of the exhibition. I propose that the Biodiscovery Space exhibit has a visible pedagogy. Finally, using the collected data I discuss the power tensions created in the production of expositive discourse showing how distributive, recontextualization and evaluation rules work in the context of exhibitions. The study of the dynamics in forming the expositive discourse using Bernstein’s framework reveals the individuals and institutions, the selection criteria, the negotiations and the power relations involved. It has the potential to assist both educators and researchers in the museum education field, as well as designers to understand the teaching and learning processes that occur during a visit and to establish relevant criteria to evaluate quality to best produce exhibitions in science museums.     

Science Education in Kindergarten: Sociocognitive perspective

This article deals with the different didactic strategies used for the initiation of preschool children to the natural sciences. There is a reference to the general characteristics of the activities that are based either on the empiricist theoretical approach or the theory of Piaget regarding cognitive development. Some facts from the neo‐piagetian, socioconstructive and vygotskian perspectives for learning are presented. Within this framework a new sociocognitive approach is put forward for the development of activities concerning the natural sciences in the kindergarten. An activity concerning the understanding of gasification is presented and used as an example of the sociocognitive perspective.     

From authoritative discourse to internally persuasive discourse: discursive evolution in teaching and learning the language of science

Learning science interpreted in existing theoretical frameworks often means that students are assimilated, accommodated or enculturated from the entity of the vernacular world to the entity of the scientific world. However, there are some unsolved questions as to how students can best learn purely a new language or new knowledge of science. The purpose of this study is to conduct microanalysis of moment-to-moment interactions in order to understand how science language is taught and learned in details. Informed by Bakhtin’s dialogism, the analysis indicates that learning science is a process of appropriating authoritative discourse into internally persuasive discourse. Based on our analysis and findings, we propose the framework of discursive evolution to describe the process of teaching and learning the language of science. Four different stages of discursive evolution are identified to demonstrate the discursive changes during the course of science teaching and learning discourse: (a) using deictic references to connect scientific terminologies, (b) understanding science terminologies through its derivatives, (c) communicating science practices conventionally through science terminologies, and (d) communicating science practices innovatively through mutated science terminologies. The findings suggest that science teaching and learning comprise a heterogeneous process which draws on both science and non-science language and is a constantly evolving process. Understanding teaching and learning as a heterogeneous and constantly evolving process allows us to reunite the roles of teachers and students as mutually responsible collaborators rather than science knowledge givers and consumers.     

Learning from group work in science

Abstract

This paper addresses itself to the question of how effective group work is in promoting ‘learning from others’. It follows an earlier report in which verbal interactions between pupils engaged in group work were analysed. The tasks attended to during the group work were all concerned with the planning of scientific investigations.

The findings obtained indicate that a significant amount of ‘learning from others’ occurs as the result of pupils being involved in group work: in the present case, about 40% of information points included in pupils’ independent written accounts had previously been contributed to the group discussion by other pupils. However, the accounts also contained information points that had not been mentioned during the preceding group discussions.

The extent of pupils’ achievement and ‘learning from others’ in group work appeared unrelated to their actual group behaviours, which suggests that even seemingly ‘inactive’ group members benefit from their involvement in group learning experiences.     

Use of telecommunications for reflective discourse of science teacher leaders

Journal of Science Education and Technology - This case study explores how a group of teacher leaders (TLCs) used network exchange to reflect upon their involvement with peer leadership and...     

Zones of interaction: Differential access to elementary science discourse

This study investigated teacher–child interaction within small‐group science activities in a fourth‐grade classroom. This qualitative study revealed three “zones of interaction,” or teacher–child interaction categories: Individual Zones of Interaction, Multiple Zones of Interaction, and a Collective Zone of Interaction. Each zone was further shaped by either a procedural, conceptual, or managerial focus for the interaction. These zones granted children differential levels of access to the teacher's knowledge. Based on these data and findings, we propose a discourse model for elementary science classrooms that encompasses talk, materials, knowledge, engagement, and power. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 43: 443–466, 2006     

应用写作对现代管理科学的重要作用

现代管理科学是一门综合性、实用性很强的科学，它运用的知识范围包括哲学、政治经济学、系统论、信息论、控制论、应用数学等，而应用文章则是存储和传播这些知识的载体，是把这些知识有机地结合起来并运用于管理实践的“粘合剂”，是促进体制改革，提高管理水平，使管理转化为生产力的必备条件。因此，学好应用写作是搞好现代管理工作的必要前提。     

Instructor and group process roles in computer-based training

Educational technology research and development -     

Student leadership in small group science inquiry

Background: Science educators have sought to structure collaborative inquiry learning through the assignment of static group roles. This structural approach to student grouping oversimplifies the complexities of peer collaboration and overlooks the highly dynamic nature of group activity.

Purpose: This study addresses this issue of oversimplification of group dynamics by examining the social leadership structures that emerge in small student groups during science inquiry.

Sample: Two small student groups investigating the burning of a candle under a jar participated in this study.

Design and method: We used a mixed-method research approach that combined computational discourse analysis (computational quantification of social aspects of small group discussions) with microethnography (qualitative, in-depth examination of group discussions).

Results: While in one group social leadership was decentralized (i.e., students shared control over topics and tasks), the second group was dominated by a male student (centralized social leadership). Further, decentralized social leadership was found to be paralleled by higher levels of student cognitive engagement.

Conclusions: It is argued that computational discourse analysis can provide science educators with a powerful means of developing pedagogical models of collaborative science learning that take into account the emergent nature of group structures and highly fluid nature of student collaboration.     

From Interaction to Intersubjectivity: Facilitating online group discourse processes

This article examines the online discourse that took place in representative threads from two classes, seeking to document indicators that students did or did not engage in co‐construction of knowledge. Stahl's (2006 Stahl, G. 2006. Group cognition: Computer support for building collaborative knowledge, Cambridge, MA: MIT Press.  [Google Scholar]) social theory of computer supported collaborative learning (CSCL) is used along with discourse analysis methods to examine these course dialogues. Findings show the class that had a peer‐like, consistent facilitative instructor and discussion anchored around questions and shared artifacts was more likely to engage in discussion leading to the negotiation of knowledge and understanding. This class relied on social acknowledgements, questions, and shared exploration of perspectives and theories throughout their discussion. These elements and strategies appear to be important components that make up for lower levels of tacit understanding in online environments, thus enabling learners to interact in social learning processes. The other class, which lacked a facilitative instructor, did not have the same results. Although interaction levels were equal and students carried topical motifs such as the phrase “faster, better, cheaper” from message to message, students in this other class did not engage deeply or develop new understanding of the course material through the discussion.     

The interplay of representations and patterns of classroom discourse in science teaching sequences

The purpose of this study is to examines the relationship between the communicative approach of classroom talk and the modes of representations used by science teachers. Based on video data from two physics classrooms in Singapore, a recurring pattern in the relationship was observed as the teaching sequence of a lesson unfolded. It was found that as the mode of representation shifted from enactive (action based) to iconic (image based) to symbolic (language based), there was a concurrent and coordinated shift in the classroom communicative approach from interactive–dialogic to interactive–authoritative to non-interactive–authoritative. Specifically, the shift from enactive to iconic to symbolic representations occurred mainly within the interactive–dialogic approach while the shift towards the interactive–authoritative and non-interactive–authoritative approaches occurred when symbolic modes of representation were used. This concurrent and coordinated shift has implications on how we conceive the use of representations in conjunction with the co-occurring classroom discourse, both theoretically and pedagogically.     

Pedagogic discourse and sex education: myths,science and subversion

This paper elaborates possibilities and limitations for sex education in schools by mapping the consequence of introducing the topic ‘sex’ within a range of scientific and informal discursive settings. The organising and regulating structures of the school maintain the boundaries between common‐sense and scientific discourses. Bernstein made a distinction between vertical discourse and horizontal discourses. Vertical discourses characterise scientific discourses that are coherent, explicit and systematically principled structures. Horizontal discourses characterise common‐sense discourses that are local, segmented and context‐dependent. The implications for teaching sex education through vertical discourses such as science, English and art as opposed to personal and social education, which is a horizontal discourse, are discussed. Yet, all discourses are unstable, and the notion of a ‘tipping point’ is introduced to demonstrate the potential for sex education when vertical discourses collapse.     

Explanations from intra- and inter-group discourse: Students building knowledge in the science classroom

This article discusses the relation and patterns of intra- and inter-group discourse as middle school students explain particular phenomena. We present a framework of the dynamic process involved in generating collaborative knowledge. Our focus is on connecting students' thinking and experience with science concepts and explanations. Using the perspective of learning as a social activity, we are interested in science teaching that engages students in collaborative inquiry as a means for learning science content. Specifically, we examine the role of shared inquiry and the nature of consensus-building in students' development of explanations from a collaborative knowledge-building stance. Student discourse, in small (intra-group) and large (inter-group) contexts, is examined as an explicit mode of inquiry. While additional study is needed, we contend these two forms of discourse (constructive and generative; dialectic and persuasive) effectively promote progressive discourse and thereby facilitate shared coherent explanations of phenomena. If we now consider dialectics rather than method as the logic of science, the whole image changes because of the essential, constitutive role played by interlocutors. Due to this role, science becomes a game with three players: an inquiring mind, or, more realistically, a group of the communityC ₁, natureN, and another group of the communityC ₂. (Pera, 1994, p. 133).     

Network analysis and qualitative discourse analysis of a classroom group discussion

ABSTRACT

A new methodology is proposed for qualitative discourse analysis (QDA) aimed at gaining enhanced insights into learning possibilities and indicators that arise during classroom group discussions. The constitution of this new methodology has two principle components: a discourse analysis approach that aims to identify the relationships between content and group dynamics; and a network analysis (NA) approach that uses the same data to identify meaning-related structural dynamics found in the data. The proposed methodology pairs these two components to create a supplementary iterative interchange that facilitates the attainment of greater analytic insights than are achievable by either of the two components individually. The critical aspects of the methodology are illustrated and discussed using real classroom data in ways that provide a procedural exemplar. The strengths and limitations of the proposed methodology are also discussed.