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This paper presents an analysis of the scientific reasoning of a dyad of secondary school students about the phenomenon of dissolution of gases in water as they work on this in a simulated laboratory experiment. A web-based virtual laboratory was developed to provide learners with the opportunity to examine the influence of physical factors on gas solubility in water. An evaluation process involving 180 students revealed that the concepts connected to the dissolution of gas in water caused problems for the students even after having experimented with the virtual laboratory. To investigate the nature of learners’ reasoning about the visualised events, 13 video-recorded groups of learners were analysed. This study follows the reasoning of one group that displayed a possibly productive way of solving the problem. The results address the students’ general difficulty of discovering something that they are conceptually unprepared for within the virtual laboratory. The analysis shows how the students eventually found a way out of their dilemma by making an analogy with other dissolving processes. In effect, the analysis elucidates some of the analytical work that had to be done by the participants when collaboratively negotiating a shared meaning of a scientific concept in concord with a given task and set of instructional materials. Implications for design might be to provide the learning material with explicit hints that enable students to connect to specific phenomena related to the one investigated concept. The findings show the usefulness of video analytic research, informed by CA and ethnomethodology. This analytical framework can support design processes and provide useful information, which might identify hurdles to learning a scientific concept by simulated events and pathways to overcome these hurdles. 相似文献
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Jonas Hallström 《History of education》2013,42(2):239-259
The aim of this article is to investigate and analyse the cultural boundaries of school biology, and to a certain extent the natural science subjects in general, in two Swedish curriculum reforms, from the viewpoint of the Swedish Association of Biology Teachers (ABT). Thomas Gieryn’s concept of boundary‐work is thus used in analysing how the ABT acted to ‘hold the subject’s territory’. The ABT had substantial influence on the content of the new biology curricula, although this was sometimes achieved after internal conflict and required support from other actors, especially university biologists. Upper secondary biology had the highest status and was seen as a science, related to modern biological research and curriculum development, particularly in the USA. Despite the efforts of the ABT boundary‐work was unsuccessful in respect of the timetable; the natural science subjects were reduced both at the lower and upper secondary level, in contrast to what happened in many other Western countries. 相似文献
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Jonas Holst 《Educational Philosophy and Theory》2013,45(9):963-972
Abstract This article means to investigate the philosophical concept of human embodiment in relation to physical education. As human beings not only do we have a body that we can control, but we ‘are’ our body and live embodied in the world, as the German thinker, Helmuth Plessner, puts it in one of his many contributions to the philosophical anthropology of the twentieth century. Elaborating on this concept of human embodiment, the article explores a form of physical re-education that takes as its starting point this aspect of being in the body which has been and is still being underestimated even in the physical educational system. Re-educating the body in this aspect includes becoming more aware of the states, postures and expressions of the body so as to be able to remain connected to the body and to get to know oneself better as being in the body. 相似文献
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Laurence Houghton Brian Dawson Jonas Rubenson Martin Tobin 《Journal of sports sciences》2013,31(8):801-809
Abstract A simulated cricket batting innings was developed to replicate the physical demands of scoring a century during One-Day International cricket. The simulated innings requires running-between-the-wickets across six 5-over stages, each of 21 min duration. To validate whether the simulated batting innings is reflective of One-Day International batting, movement patterns were collected using a global positioning system (GPS) and compared with previous research. In addition, indicators of physical strain were recorded (heart rate, jump heights, sweat loss, tympanic temperature). Nine club cricketers (mean ± s: age 20 ± 3 years; body mass 79.5 ± 7.9 kg) performed the simulated innings outdoors. There was a moderate trend for distance covered in the simulated innings to be less than that during One-Day batting (2171 ± 157 vs. 2476 ± 631 m · h?1; effect size = 0.78). This difference was largely explained by a strong trend for less distance covered walking in the simulated innings than in One-Day batting (1359 ± 157 vs. 1604 ± 438 m · h?1; effect size = 1.61). However, there was a marked trend for distance covered both striding and sprinting to be greater in the simulated innings than in One-Day batting (effect size > 1.2). Practically, the simulated batting innings may be used for match-realistic physical training and as a research protocol to assess the demands of prolonged, high-intensity cricket batting. 相似文献
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Jonas Masdonati Geneviève Fournier Mathieu Pinault Imane Z. Lahrizi 《International Journal for Educational and Vocational Guidance》2016,16(2):189-212
Adopting a mixed method design, this paper explores the configuration and evolution of work values of 64 young adults in transition from education to employment. Qualitative analyses point out the existence of four categories of work values: interesting tasks, good relationships, self-fulfillment, and attractive work conditions. Quantitative analyses show that work values are questioned during the school-to-work transition, refined according to the experience of labor market integration, and partially different according to gender, education type, and the quality of the integration process. Consequently, career counseling should integrate a deeper understanding of what clients consider as important in their work lives. 相似文献
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ABSTRACTThis paper presents an action research project that aimed to increase opportunities for multilingual literacy engagement and identity investment for newly-arrived immigrant students in Norway. A language teacher and a researcher jointly developed a cross-curricular, multilingual module focusing on identity texts written in three languages: English, Norwegian, and each student's home language. Fourteen adolescent students speaking 15 different home languages participated. To assess the effectiveness of the multilingual pedagogical practices, the data collected included a language use questionnaire, student reflection logs, students’ identity texts, lesson plans, and the teacher's notes and reflections. The results suggest that explicit emphasis on including all languages in students’ linguistic repertories can help build inclusive classroom spaces and foster learners’ multilingual identities. 相似文献
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ABSTRACTWe assess Mureithi's 2009 documentary, ICYIZERE: hope (Motion Picture, Josiah Films), as a document of representational space and collective memory. We argue that the post-genocide reconciliation workshop represented in the film embodies and constructs a sacred/secular space. The reconciliatory space is produced through (1) negotiations of dialectical tensions between past/present as well as individual/collective memory, and (2) (re)presentations of rehumanization within the workshop whereby participants (and audiences) can (re)interpret the Other. We analyze the rehumanization process in the documentary via identity widening theory (Ellis, D.G., 2006, Transforming conflict: Communication and ethnopolitical conflict. Boulder, CO: Rowman & Littlefield Publishers) and empathetic human interaction. Finally, we detail how the documentary situates participants within a transformative space of negotiated memories of the genocide with current day reconciliation efforts. 相似文献
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Thomas Hillman Annika Bergviken Rensfeldt Jonas Ivarsson 《Learning, Media and Technology》2020,45(1):7-16
ABSTRACTSweden has one of the most marketised and decentralised school systems in the world while also ranking amongst countries with the highest levels of access to technology in classrooms. Considering the increasingly central role that digital platforms play in the practices of schooling, this article speculates on what might happen during the 2020s in highly decentralised school systems like Sweden’s. Based on current trends in education, directions indicated by platformisation in other contexts and taking a critical speculative approach, it offers a discussion of what could happen to the practices of schooling and the public mission of education. This discussion is intended to raise important questions for researchers, educators and policy makers to consider as the platformisation of schooling unfolds. 相似文献
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Rodrigo P. Lemos Jonas A. Kunzler Diego F. Burgos B. Mário J. de Souza Hugo V. L. e Silva Yroá R. Ferreira Edna L. Flôres Oliver Sander 《Journal of The Franklin Institute》2019,356(6):3781-3796
SEAD method estimates the direction-of-arrival angles on an uniformly linear array based on the difference between the two largest singular values, what is called differential spectrum. Although it presented an outstanding performance, the ability to indicate the source positions was not elucidated yet. Inspired by the differential spectrum formulation we derived a total differential spectrum and found out that the matrix norm induced by the vector 2-norm of a modified spatial covariance matrix can be used to estimate the direction-of-arrival of multiple plane waves. Indeed we show that matrix norms are estimators and we propose their use instead of the singular value decomposition in SEAD-based methods. We present a general mathematical expression in order to explicit the operating principles of the proposed methods. Consequently, we were able to explain how the relation between the arriving and the search angles produces the larger peaks on the differential spectrum. To evaluate the important role played by matrix norms, a thousand experiments were carried out. They showed that the proposed approach proved to be as accurate as the previous SEAD-based methods, while providing a significant reduction on runtime. It also outperformed well-established methods like MODEX regarding the estimation error. 相似文献