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151.
Given the diversity of materials in our surroundings, one should expect scientifically literate citizens to have a basic understanding of the core ideas and practices used to analyze chemical substances. In this article, we use the term ‘chemical identity' to encapsulate the assumptions, knowledge, and practices upon which chemical analysis relies. We conceive chemical identity as a core crosscutting disciplinary concept which can bring coherence and relevance to chemistry curricula at all educational levels, primary through tertiary. Although chemical identity is not a concept explicitly addressed by traditional chemistry curricula, its understanding can be expected to evolve as students are asked to recognize different types of substances and explore their properties. The goal of this contribution is to characterize students' assumptions about factors that determine chemical identity and to map how core assumptions change with training in the discipline. Our work is based on the review and critical analysis of existing research findings on students' alternative conceptions in chemistry education, and historical and philosophical analyses of chemistry. From this perspective, our analysis contributes to the growing body of research in the area of learning progressions. In particular, it reveals areas in which our understanding of students' ideas about chemical identity is quite robust, but also highlights the existence of major knowledge gaps that should be filled in to better foster student understanding. We provide suggestions in this area and discuss implications for the teaching of chemistry. 相似文献
152.
Courtney T. Goto 《Religious education (Chicago, Ill.)》2013,108(4):440-455
This article highlights the potential of symbols, specifically those David Tracy calls “religious classics,” to anchor both dialogue among people of differing beliefs and the formation of young people by their religious communities. Symbols present a particularly propitious focal point for such dialogue because of (1) the congruence of symbolic expression with the dynamics of human cognition and (2) the suitability of this mode of expression to the present cultural context. A dramatic example illustrates the process of shared reflection on classic religious symbols through which and for which religious communities should form their youth for responsible participation in public spaces. 相似文献
153.
Michelle G. Knight Iris R. Dixon Nadjwa E. L. Norton Courtney Bentley 《The Urban Review》2004,36(2):101-118
Technologies such as videoconferencing used for distance education are creating ways for high schools to extend their learning communities to connect youth with professional communities of practice in ways that approximate the face-to-face interactions in traditional classrooms. These technologies are often touted as a way to augment course offerings and curricula, particularly those needed for college-going. The use of videoconferencing technologies alone, however, does not ensure that the desired forms of interaction will occur particularly given their reliance on traditional banking-model pedagogies and literacies. In this article, we focus on college bound Black and Latino/a youth from under resourced urban communities and their negotiations of new technologies, multiple literacies, and traditional pedagogies within a music education learning community extended through videoconferencing technologies. Employing a multicultural feminist critical theoretical framework, we unearth the ways Black and Latino/a youths identities as active learners and college-bound musicians shape, and are shaped, in the interplay of new technologies, multiple literacies, and traditional pedagogies within a music education classroom. 相似文献
154.
Hannah Sevian Deirdre Hugi-Cleary Courtney Ngai Florence Wanjiku Jesse Mhel Baldoria 《International Journal of Science Education》2018,40(10):1239-1262
ABSTRACTContext-based learning (CBL) is advocated as beneficial to learners, but more needs to be understood about how different contexts used in courses influence student outcomes. Gilbert defined several models of context that appear to be used in chemistry. In one model that achieves many criteria of student meaning-making, the context is provided by ‘personal mental activity’, meaning that students engage in a role to solve a problem. The model’s predicted outcomes are that students develop and use the specialised language of chemistry, translate what they learn in the immediate context to other contexts, and empathise with the community of practice that is created. The first two of these outcomes were investigated in two large-enrolment university chemistry courses, both organised as this CBL model, in which students were introduced to kinetic molecular theory (KMT). Sample 1 students (N1?=?105) learned KMT through whole-class kinaesthetic activity as a human model of a gas while focusing on a problem identifying substances in balloons filled with different gases. Sample 2 students (N2?=?110) manipulated molecular dynamics simulations while focusing on the problem of reducing atmospheric CO2. Exam answers and pre-/post-test responses, involving a new KMT context, were analysed. Students in Sample 1 demonstrated a stronger understanding of particle trajectories, while Sample 2 students developed more sophisticated mechanistic reasoning and greater fluidity of translation between contexts through increased use of chemists’ specialised language. The relationships of these outcomes to the contexts were examined in consideration of the different curriculum emphases inherent in the contexts. 相似文献
155.
156.
Corporatising school leadership through hysteresis 总被引:1,自引:0,他引:1
Steven J. Courtney 《British Journal of Sociology of Education》2017,38(7):1054-1067
This article builds on the established notion that schools are hierarchised through policy, accruing different amounts and types of symbolic capital, by examining how this is reflected in the habitus of the leaders of new, privileged school types. The article uses Bourdieu’s concept of hysteresis, or a dislocation between the habitus which formerly produced success in the field and the habitus currently necessary following changes in field conditions. Using crafted narrative accounts from two headteachers, I argue that rather than simply being an effect of change, hysteresis may be an actively sought outcome whereby the state intervenes in a field – education – to deprivilege welfarist leaders and privilege corporatised leaders through structurally facilitating their habitus and mandating its dispositions for the field. However, insofar as deprivileged actors may draw strength and an identity from rejecting corporatisation, the concept of hysteresis must be extended to include notions of agentic dissidence. 相似文献
157.
All 50 states use observations to evaluate practicing teachers, but we know little about how administrators actually reason when they use those observation protocols. Drawing on think-aloud and stimulated recall data, this study describes the types of strategies and warrants practicing administrators used when rating with their district’s observation protocol. Administrators in a large urban district used an observation protocol aligned to Danielson’s Framework for Teaching to rate a brief lesson clip. Administrators’ thinking was recorded, clarified, and inductively coded. Findings suggest administrator thinking and justification is complex even for short lengths of instruction. Administrators used a range of reasoning strategies, many of which were not sanctioned by their training. Exploratory analyses suggest strategy use was not related to the accuracy of ratings. Implications for the validity of teacher observation scores in high-stakes settings are considered. 相似文献
158.
The purpose of this study was to investigate the incorporation of iPads into the early childhood classroom through an exploratory teacher professional development initiative. Eighteen early childhood educators participated in a 6-month study targeting teacher professional development and pedagogical innovation. This study included built-in opportunities for teacher collaborative discussions and support in their team meetings, as well as basic technology training on the use of an iPad in a classroom. A thematic analysis was conducted using constructed codes from teacher interviews and focus groups, as well as artifact collections of notes from teacher bi-monthly meetings. Results indicate that teachers used technology in three innovative ways: as an efficiency solution, as a bridge in virtual parent communication, and as curriculum enhancement or replacement. The researchers of this study argue that using the iPad as curriculum is the next area of professional growth for early childhood teachers. 相似文献
159.
Gen/Ethics? Organizational Ethics and Student and Instructor Conflicts in Workplace Training 总被引:1,自引:0,他引:1
Brenton D. Faber 《Technical Communication Quarterly》2001,10(3):291-318
This article takes a critical-analytical perspective on the concept of generational ethics at a corporate university site. Specifically, the article seeks to answer whether or not student-employees between the ages 21-35, commonly referred to as “generation x”, hold different ethical stances than their instructors and older employees in the organization. Surveys were distributed to 68 students and 8 instructors at the facility to determine the extent to which students differed on six work-related values. Results indicate that students in the 21-35 age cohort did not exhibit popular expectations for “generation x.” However, differences were found in the ways each generation reported work-related values. The study concludes that younger students conflicted with older students and instructors on issues involving organizational values. It is concluded that the younger students had not yet been fully socialized into the dominant organizational values of this company. 相似文献
160.
Irene R. Faber Paul M.J. Bustin Frits G.J. Oosterveld Marije T. Elferink-Gemser Maria W.G. Nijhuis-Van der Sanden 《Journal of sports sciences》2016,34(5):395-410
Since junior performances have little predictive value for future success, other solutions are sought to assess a young player’s potential. The objectives of this systematic review are (1) to provide an overview of instruments measuring personal talent determinants of young players in racquet sports, and (2) to evaluate these instruments regarding their validity for talent development. Electronic searches were conducted in PubMed, PsychINFO, Web of Knowledge, ScienceDirect and SPORTDiscus (1990 to 31 March 2014). Search terms represented tennis, table tennis, badminton and squash, the concept of talent, methods of testing and children. Thirty articles with information regarding over 100 instruments were included. Validity evaluation showed that instruments focusing on intellectual and perceptual abilities, and coordinative skills discriminate elite from non-elite players and/or are related to current performance, but their predictive validity is not confirmed. There is moderate evidence that the assessments of mental and goal management skills predict future performance. Data on instruments measuring physical characteristics prohibit a conclusion due to conflicting findings. This systematic review yielded an ambiguous end point. The lack of longitudinal studies precludes verification of the instrument’s capacity to forecast future performance. Future research should focus on instruments assessing multidimensional talent determinants and their predictive value in longitudinal designs. 相似文献