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71.
Michael S. Horn 《学习科学杂志》2013,22(4):632-665
Designers who create computer-based learning experiences for places like museums, out-of-school programs, and homes face a number of challenges related to the informal nature of such settings. Designs must generally function on their own without the support of teachers or curriculum while at the same time engaging a diverse audience, supporting productive social interaction, and activating appropriate prior knowledge and skills. In this article, I present an approach to the design of informal learning experiences based on tangible interaction. The term tangible refers to a variety of human–computer interaction techniques that move beyond computer screens and create opportunities for people to interact with digital systems using their bodies and physical artifacts. I argue that tangible interaction creates unique opportunities for designers to shape objects and situations to evoke cultural forms of literacy, learning, and play. In particular, I propose a class of cultural forms called cueing forms that can invite participation into patterned social activity while cueing cognitive, physical, and emotional resources on the part of individuals. To illustrate these arguments, I describe 3 design cases that colleagues and I have created to support learning in museums and homes. 相似文献
72.
Thelma de Jager 《International Journal of Inclusive Education》2013,17(1):80-94
Despite previous research and recommendations in South Africa, secondary-school teachers still encounter economic, social and cultural challenges in implementing differentiated learning activities in the classroom. The diversity of learners with learning barriers inevitably leads to an increase in workload for the teachers. This article draws on data generated from the research conducted in South Africa and from questionnaires completed by secondary-school teachers who identified existing challenges to implementing differentiated learning activities, as well as on student teachers who implemented three differentiated learning activities (for the slow, average and gifted learners), and reflects on their experiences of good and bad practices. The literature review and specialists' views were integrated to determine how to overcome the challenges that the implementation of differentiated learning faces. Several challenges to the implementation of differentiated learning were highlighted by the research. The research indicated that a total of 97% of teachers never or seldom use a flexible curriculum and extra time to accommodate the diverse learning needs of learners. This article provides guidelines on how to implement differentiated learning activities in secondary-school classes and offers ideas on how to start with differentiated teaching. 相似文献
73.
Mark Walsh Brad Young Brian Hill Kevin Kittredge Thelma Horn 《Journal of sports sciences》2013,31(2):185-192
Abstract There are several ways of carrying the ball in rugby union, which could influence the speed at which a player can run. We assessed 52 rugby players (34 males, 18 females) during a maximum sprint over 30 m without the ball, with the ball under one arm, and with the ball in both hands. Timing gates were used to measure time over the initial 10 m and the last 20 m. It has previously been reported (Grant et al., 2003) that running with the ball produces a slower sprinting speed than running without the ball. We hypothesized that the decrease in speed caused by carrying the ball would become less marked with the experience of the player. The male and female players were each divided into two groups: a “beginner” group that consisted of players in their first or second season and an “experienced” group that was composed of players who had played for more than two seasons. A 2 × 3 mixed-model analysis of variance was used to identify differences (P < 0.01) between the beginner and experienced groups in the three sprinting conditions. The times for the males for the first 10 m sprints without the ball, with the ball under one arm, and with the ball in both hands were 1.87 ± 0.08 s, 1.87 ± 0.08 s, and 1.91 ± 0.1 s for the beginners, and 1.87 ± 0.1, 1.88 ± 0.1 and 1.88 ± 0.12 for the more experienced players respectively. The times for the females for the first 10 m without the ball, with the ball under one arm, and with the ball in both hands were 2.13 ± 0.16 s, 2.19 ± 0.17 s, and 2.20 ± 0.16 s for the beginners, and 2.03 ± 0.12 s, 2.03 ± 0.09 s, and 2.04 ± 0.1 s for the more experienced players respectively. For the last 20 m of the 30-m sprint, there were differences between the different sprint conditions (P < 0.001) but no differences that were attributable to experience (P = 0.297). The times for the males over the last 20 m without the ball, with the ball under one arm, and with the ball in both hands were 2.58 ± 0.19 s, 2.61 ± 0.12 s, and 2.65 ± 0.12 s for the beginners, and 2.59 ± 0.12, 2.62 ± 0.23, and 2.65 ± 0.18 s for the more experienced players respectively. The times for the females over the last 20 m without the ball, with the ball under one arm, and with the ball in both hands were 3.25 ± 0.38 s, 3.35 ± 0.42 s, and 3.40 ± 0.46 s for the beginners, and 3.04 ± 0.32 s, 3.06 ± 0.22 s, and 3.13 ± 0.27 s for the more experienced players respectively. No gender-specific differences were detected. The results of this study suggest that practising sprints while carrying a ball benefits the early phase of sprinting while carrying the ball. 相似文献
74.
The early 1980s constituted a watershed in science, mainly concerning the extent and nature of globalization and commercialization of scientific research, and its impact upon the university. Considerable debate has arisen about the sources of this transition, but aside from a few lone voices, the scholarly literature has neglected the concurrent rise of the contract research organization (CRO) and its role int he commercialization of scientific research. The CRO warrants wider attention as a modern paradigm of privatized science in the biopharmaceutical sector. In discussing the CRO's technologies, the purposes they pursue, and the legal and policy initiatives that have fostered their rapid rise, we confront the wider implications of the modern regime of commercialized science for the future conduct of scientific research. We identify five areas of innovation: treatment of human subjects, control of disclosure, subjection of research tools to commercialization, redefinition of authorship, and re-engineering the goals of research. 相似文献
75.
ABSTRACTThe article outlines a framework for studying and organizing infrastructure, social and material to advance consequential knowledge. To demonstrate the utility of the framework, three examples of innovation in teacher education are presented that involve re-mediating infrastructure to imagine equity-oriented teacher learning. The first case focuses on re-mediating social resources to create new pathways for knowledge and expertise to flow between a school and a university teacher education programme. The second case considers how re-mediating social and material resources, specifically who is involved in designing the goals of a teacher education programme, expanded conceptions of the valued outcomes of teacher preparation. The third case addresses the impact of an innovation that re-mediated technical and social resources to support teachers’ professional judgment in classroom interactions. As teacher educators, we need to be open to shifting our purposes and our designs in response to changing institutional, political, and practical circumstances. This framework for organizing and re-mediating infrastructure provides a means of doing this work in principled and responsible ways. 相似文献
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