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91.
Westfall C 《Isis; an international review devoted to the history of science and its cultural influences》2003,94(1):30-56
Historians of science have tended to focus exclusively on scale in investigations of largescale research, perhaps because it has been easy to assume that comprehending a phenomenon dubbed "Big Science" hinges on an understanding of bigness. A close look at Lawrence Berkeley Laboratory's Bevalac, a medium-scale "mezzo science" project formed by uniting two preexisting machines--the modest SuperHILAC and the grand Bevatron--shows what can be gained by overcoming this preoccupation with bigness. The Bevalac story reveals how interconnections, connections, and disconnections ultimately led to the development of a new kind of science that transformed the landscape of large-scale research in the United States. Important lessons in historiography also emerge: the value of framing discussions in terms of networks, the necessity of constantly expanding and refining methodology, and the importance of avoiding the rhetoric of participants and instead finding words to tell our own stories. 相似文献
92.
Three studies look at whether the assumption of causal determinism (the assumption that all else being equal, causes generate effects deterministically) affects children's imitation of modeled actions. These studies show even when the frequency of an effect is matched, both preschoolers (N = 60; M = 56 months) and toddlers (N = 48; M = 18 months) imitate actions more faithfully when modeled actions are deterministically rather than probabilistically effective. A third study suggests that preschoolers' (N = 32; M = 58 months) imitation is affected not just by whether the agent's goal is satisfied but also by whether the action is a reliable means to the goal. Children's tendency to generate variable responses to probabilistically effective modeled actions could support causal learning. 相似文献
93.
Quality Learning of Physics: Conceptions Held by High School and University Teachers 总被引:1,自引:0,他引:1
This paper reports an exploration of the conceptions of quality learning held by two samples of physics teachers – final year, high school physics teachers and academics teaching first year university physics. We begin by outlining our view of quality learning, that is a view of learning in which learners take control of their own learning and engage with active construction and reconstruction of their own meanings for concepts and phenomena. This view of quality learning recognises the crucial role of the affective dimension of learning on the extent to which students engage with and maintain such constructivist and metacognitive approaches to learning. The study explored the qualitatively different ways in which individuals conceptualise quality learning in physics, using semi structured interviews that explored aspects of learning that the respondents regarded as worth fostering in their classrooms. The interview approach was a modification of the Interview-About-Instances approach that allowed the possibility of interviewees suggesting instances of particular relevance to their view of quality learning. This process resulted in a considerable quantity of rich and complex data related to a large range of aspects of physics learning. These data are summarised here, and the qualitatively different conceptions of the respondents with respect to four significant aspects of physics learning are discussed. These aspects are: doing experimental work; linking physics to the real world; students taking responsibility for their own learning and being confident/feeling proud of what you can do. 相似文献
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Pamela A. Moss Jamie Sue Beck Catherine Ebbs Barbara Matson James Muchmore Dorothy Steele Caroline Taylor Roberta Herter 《Educational Measurement》1992,11(3):12-21
How can the results of classroom-based portfolio assessment be communicated outside the classroom? How might a portfolio-based assessment system be designed and implemented? How can we evaluate the merits of portfolio-based assessments? 相似文献
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98.
Two experiments examined the role of analogy inthe development of a situation model of atarget passage. Specifically, we examinedwhether an analogous source text could improvecomprehension and inferencing about causalmechanisms in the target. An ``analogy group'studied a fictional pseudo-scientific passageunder the guidance of an analogous passage(also fictional) which shared causal structureswith the target. A ``statement group' studiedthe target under the guidance of an abstractstatement that characterized the target causalstructures. A ``target-only group' received noadditional material. All groups received tasksthat assessed their representation of thetarget. In Experiment 1 (N = 92) participantswere asked to list the most important objectsand relations in the passage. In Experiment 2(N = 80) participants were directly asked aboutthe target causal structures. In bothexperiments, responses of analogy subjects weremore likely to include given and inferredinformation that comprised the target causalmechanisms. Analogies in which a sourcepassage models causal mechanisms correspondingto those of a target passage appear to promotebetter representation of the details of targetcausal mechanisms, allowing a more fullydeveloped situation model of the target. 相似文献
99.
Catherine Doherty 《教育政策杂志》2017,32(1):34-47
This paper considers the educational experience constructed under Australia’s policy decision in 2009 to extend compulsory education by requiring that students must be ‘earning or learning’ till 17 years of age. The discussion draws on an empirical project that explored the moral order operating in classrooms for students retained under this policy in non-academic pathways in high schools and Technical and Further Education colleges across three towns experiencing youth employment stress. It asks how the policy regulating these students’ prolonged engagement with formal education plays out in classroom interactions, to what end and to whose benefit. A theoretical lens informed by work by Standing and Wacquant is used to understand the contemporary moment, and work by Durkheim and Bernstein unpacks the moral work implicated in classroom interactions. The analysis describes the light curriculum and the heavy compliance demanded in these ‘edufare’ programmes then argues that in essence the policy seeks to manage the social risk posed by the future precariat. The conclusion reflects on whether this is an adequate policy response to broad generational changes in fortunes and prospects to which education may not have the answers. 相似文献
100.
Margaret Vickers Catherine Harris Florence McCarthy 《Asia-Pacific Journal of Teacher Education》2004,32(2):129-141
Since 1999, pre‐service teachers undertaking the Bachelor of Teaching (Secondary) Program at the University of Western Sydney have participated in an alternate practicum called Professional Experience 3 (PE3). This practicum encourages students to engage in broader educational settings within local communities. Increasingly, a number of service‐learning opportunities have been developed, most notably, senior student tutoring programs and the involvement of students in the Plan‐It Youth project in conjunction with the Department of Education and Training (DET) and the South‐western Sydney Institute of TAFE. A focus of these programs has been to address the issues related to students at risk of leaving school early within the local South‐western Sydney community.
In this paper we discuss the benefits of these programs to the university, pre‐service‐teachers, school students and school communities, and the broader local community. Specifically, we examine service learning as a conduit for the development and maintenance of meaningful symbiotic relationships between the university and the educational community, and pre‐service teachers and the local community. Finally, we look towards the future and highlight the challenges and opportunities for service‐learning programs within the practicum. 相似文献