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91.
Julia D. Plummer Christopher Palma Alice Flarend KeriAnn Rubin Yann Shiou Ong Brandon Botzer 《International Journal of Science Education》2013,35(9):1381-1401
This study describes the process of defining a hypothetical learning progression (LP) for astronomy around the big idea of Solar System formation. At the most sophisticated level, students can explain how the formation process led to the current Solar System by considering how the planets formed from the collapse of a rotating cloud of gas and dust. Development of this LP was conducted in 2 phases. First, we interviewed middle school, high school, and college students (N?=?44), asking them to describe properties of the current Solar System and to explain how the Solar System was formed. Second, we interviewed 6th-grade students (N?=?24) before and after a 15-week astronomy curriculum designed around the big idea. Our analysis provides evidence for potential levels of sophistication within the hypothetical LP, while also revealing common alternative conceptions or areas of limited understanding that could form barriers to progress if not addressed by instruction. For example, many students' understanding of Solar System phenomena was limited by either alternative ideas about gravity or limited application of momentum in their explanations. Few students approached a scientific-level explanation, but their responses revealed possible stepping stones that could be built upon with appropriate instruction. 相似文献
92.
This qualitative study was conducted to discuss and dispel commonly held myths about Latino parents' involvement in their children's education. Differences between teacher perceptions of Latino parent involvement and parents' understanding of their roles in supporting their children's education—including the learning and use of the English language—were explored. Results indicated that some teachers held negative perceptions of Latino parents. The study also revealed that Latino parents had high expectations of their children's academic achievement and wanted to be more involved in their education, but felt excluded from the school community. 相似文献
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94.
Mary Alice McDonald Marian Sigman Michael P. Espinosa Charlotte G. Neumann 《Child development》1994,65(2):404-415
Kenya experienced a severe drought and temporary food shortage during a study on mild malnutrition. Effects of the temporary food shortage on energy intake, weight, and behaviors were evaluated in schoolchildren and in toddlers and their mothers. Schoolchildren were seriously affected, showing significant declines in their energy intake, age-corrected weight, activity on the playground, and classroom attention. Toddlers appear to have been somewhat protected since their energy intake, weight, and play and language behaviors were stable. Maternal caregiving of toddlers declined for the group as a whole, but individually those mothers who maintained family food levels delegated responsibility for toddlers to other caregivers. While the food shortage affected poorer families more than those of higher SES, declines in the behaviors of schoolchildren occurred regardless of SES and previous level of nutrition, suggesting that food shortages can have behavioral consequences for schoolchildren in all communities. 相似文献
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96.
Alice Sullivan Samantha Parsons Francis Green Richard D. Wiggins George Ploubidis Timmy Huynh 《牛津教育评论》2013,39(6):806-822
ABSTRACTThis paper asks whether private, selective, and faith schools in England and Wales in the 1980s provided an academic advantage to their pupils, both in the short and longer term. Using longitudinal data from the 1970 British Cohort Study, we examine academic outcomes in compulsory schooling and further education, and the highest qualification gained by age 42. School sector differences are substantially attenuated by controlling for prior pupil characteristics. Nevertheless, a residual effect of private, grammar, and secondary modern schooling remains, both in the short and long term, controlling for both pupil and school characteristics. In the case of faith schools, however, the apparent advantage is restricted to the short term once pupil characteristics are controlled. A unique feature of our analysis is that we control for the individual’s faith of upbringing, which is important in reducing what could otherwise be seen as a distinctive Catholic school advantage. 相似文献
97.
ABSTRACTBackground: Over the past 10 years, research has started to investigate the pedagogic practices of instructors and coaches working in adventure sports settings. Outdoor instructors face particular challenges regarding the impact the dynamic environment has on the coaching process and their students. This challenging combination of factors obliges the instructor to be agile in response. We propose that this adaptive expertise is characteristic of these factors and that adaptability may be a beneficial focus of outdoor instructor training and education.Purpose: The major aim was to identify if adaptive expertise is an attribute of outdoor instructors? And if so, what are its characteristics in this context?Research design and data collection: We applied a mixed methodology to a sample of outdoor instructors (n?=?64). The instructors were asked to complete a quantitative adaptive expertise inventory. We then interviewed a selected sub-sample (n?=?12).Participants and setting: Quantitative data was collected from outdoor instructors working in the UK (n?=?64). The sample consisted of instructors qualified to work independently with groups in adventurous settings in a range of activities. Qualitative data was collected from a smaller sample (n?=?12) via a series of thematically analysed semi-structured interviews.Findings: Results suggest that the participating outdoor instructors have high levels of adaptive expertise. A characteristic of that adaptive capacity is a combination of skills revolving around reflection, metacognition, and situational awareness. There were differences, however, between less and more experienced outdoor instructors in their adaptive capacity, with less experienced instructors being adaptive to a lesser extent.Conclusions: The implication is that further research is worthwhile to examine the development of instructors’ adaptive capacity. The training and education of outdoor instructors requires pedagogic approaches that facilitate and engender adaptability, flexibility and agility in neophyte instructors. 相似文献
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99.
Much academic analysis of media representations of drugs-related violence in Brazil has focused on their role in perpetuating violence and societal divisions. There is less research on how the country’s traditional news media can shape information in order to foster dialogue between people and potentially resolve conflict. This article aims to address this gap by exploring the possibilities and challenges for printed news media to acquire “mediated” social capital. The concept is understood here as a specific resource of power that has the potential to connect people from diverse social, cultural and economic backgrounds. In order to do so, we analyse how a popular Rio newspaper has used its symbolic power to produce social capital with an investigative series about Brazil’s involvement in the international drugs trade. It is argued here that the series paints a complex picture of its causes and consequences and is an important step towards a deliberative process about possible solutions to drugs-related violence in Rio and beyond. 相似文献
100.
This paper attempts to develop a set of generic questions the answers to which allow any given R&D activity to be correctly classified in one or another conventional R&D box—basic, applied, development, etc. Such systematic pigeon-holing allows latecomer countries to gauge the distance of their R&D activity from the world frontier, and how policies may be designed to overcome the hurdle that divides applied research and developmental research. 相似文献