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Cindy E. Hmelo-Silver Ellina Chernobilsky Rebecca Jordan 《Instructional Science》2008,36(5-6):409-430
Trying to understand the complexity of computer-mediated problem-based learning environments is not easy. Sociocultural theory provides a theoretical framework for understanding such environments because it emphasizes the socially situated nature of learning and the critical role of tools in mediating learning. To examine how different aspects of discourse relate to each other, as well as to the tools being used in the collaborative learning process, it is important to understand how collaborative knowledge building unfolds and how these processes are mediated. This requires going beyond coding individual speech acts. The use of Chronologically-Ordered Representations of Discourse and Tool-Related Activity (CORDTRA) diagrams is one way of achieving this understanding. We use this to study contrasting cases of more and less successful groups using the STELLAR learning environment. STELLAR is an integrated online PBL environment for preservice teachers, containing a learning sciences hypermedia, a library of videocases, and online personal and collaborative spaces. Our analyses suggest that an important locus of differences is how students use resources and engage in different kinds of metacognitive talk and knowledge transforming activities, sometimes to the group’s detriment. Frequency analyses provided an easily interpreted snapshot of each group’s activity. The CORDTRA analyses provide a more dynamic view that helps researchers and teachers better understand how collaborative learning unfolds. Such analyses have implications for understanding new learning environments as well as helping identify where interventions might be needed. 相似文献
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Ellina Chernobilsky Maria Carolina DaCosta Cindy E. Hmelo-Silver 《Instructional Science》2004,32(4):319-356
A sociocultural view of learning proposes that learning involves becoming enculturated into a community of practice. A step
along the way is learning to use the specialized language of such a community, as language is a crucial tool that regulates
participation, mediates cognition and plays a central role in the development of thought. Problem-based learning (PBL), with
its emphasis on collaborative discourse, provides opportunities for students to develop the conceptual language of a discipline,
which in turn affects cognition. In a problem-based undergraduate Educational Psychology course, many psychological theories,
concepts and principles are introduced to pre-service teachers. During the course, as students learn through problem solving,
they engage with new knowledge. This evolving knowledge requires new discourse structures that will allow students to express
their new ideas and that will ultimately structure students' ways of knowing. The content of group and individual artifacts
is analyzed to examine how PBL influences students' language and knowledge development over the course of the semester in
an Educational Psychology class (n = 34). The goal of this paper is to present these analyses and to discuss how the change affects students' language and knowledge. 相似文献
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Soula Ioannou Christiana Kouta Maria Constantinidou Panayiota Ellina 《Sex education》2014,14(4):375-386
The development of health promotion is typically viewed as a reaction against both the excessive responsibility placed on individuals concerning their health-related choices and the absence of recognition of environmental factors associated with personal decision making. What though does sexuality education mean from the perspective of health promotion? According to one approach, it implies the existence of a curriculum that recognises the environmental factors affecting sexuality and sexual behaviour. It also suggests a curriculum that aims to empower students to engage with risky sexual behaviour, not just as a personal issue but also as a social matter. The emphasis is placed not merely on developing personal knowledge and skills associated with sexuality and sexual behaviour but on enabling active citizens to protect themselves and their co-citizens from sexual risks and to promote healthy sexuality. This paper discusses such a health promotion perspective in relation to the sexuality education curriculum as recently developed in Cyprus. It demonstrates how a health promotion perspective in relation to sex education can be translated into the establishment of learning objectives, appropriate pedagogic methods and the development of school materials. 相似文献
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