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Learning environments at the margin: Case studies of disenfranchised youth doing science in an aquarium and an after-school program 总被引：1，自引：0，他引：1
In this article, we explore how two informal educational contexts—an aquarium and an after-school science program—enabled
disenfranchised learners to adopt an identity as insiders to the world of science. We tell the stories of four youth, relating
what doing science meant to them and how they positioned themselves in relation to science. We contribute to the extensive
literature on the value of learning beyond the school walls, yet focus on ethnically and linguistically diverse youth from
low-income backgrounds who have often been excluded from such settings. We suggest that such out-of-school settings are particularly
important to youth who have few other opportunities to interact with and relate to science in positive ways. 相似文献
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Gläser Jochen Ash Mitchell Buenstorf Guido Hopf David Hubenschmid Lara Janßen Melike Laudel Grit Schimank Uwe Stoll Marlene Wilholt Torsten Zechlin Lothar Lieb Klaus 《Minerva》2022,60(1):105-138
Minerva - The independence of research is a key strategic issue of modern societies. Dealing with it appropriately poses legal, economic, political, social and cultural problems for society, which... 相似文献
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Daniel D. Bingham Silvia Costa Stacy A. Clemes Ash C. Routen Helen J. Moore Sally E. Barber 《Journal of sports sciences》2016,34(20):2005-2010
This study presents a worked example of a stepped process to reliably estimate the habitual physical activity and sedentary time of a sample of young children. A total of 299 children (2.9 ± 0.6 years) were recruited. Outcome variables were daily minutes of total physical activity, sedentary time, moderate to vigorous physical activity and proportional values of each variable. In total, 282 (94%) provided 3 h of accelerometer data on ≥1 day and were included in a 6-step process: Step-1: determine minimum wear-time; Step-2: process 7-day-data; Step-3: determine the inclusion of a weekend day; Step-4: examine day-to-day variability; Step-5: calculate single day intraclass correlation (ICC) (2,1); Step-6: calculate number of days required to reach reliability. Following the process the results were, Step-1: 6 h was estimated as minimum wear-time of a standard day. Step-2: 98 (32%) children had ≥6 h wear on 7 days. Step-3: no differences were found between weekdays and weekend days (P ≥ 0.05). Step-4: no differences were found between day-to-day variability (P ≥ 0.05). Step-5: single day ICC’s (2,1) ranged from 0.48 (total physical activity and sedentary time) to 0.53 (proportion of moderate to vigorous physical activity). Step-6: to reach reliability (ICC = 0.7), 3 days were required for all outcomes. In conclusion following a 7 day wear protocol, ≥6 h on any 3 days was found to have acceptable reliability. The stepped-process offers researchers a method to derive sample-specific wear-time criterion. 相似文献
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Ralph N. Sargent Rene L. Ash John Hales George Fox 《Communication Booknotes Quarterly》2013,44(4):48-49
Ralph N. Sargent's Preserving the Moving Image (Washington: Corporation for Public Broadcaiting and National Endowment for the Arts, 1974---$3.95, paper) Rene L. Ash's The Motion Picture Film Editor (Metuchen, N.J.: Scarecrow Press, 1974---$6.00) John Hales (ed.) Computer Animation (New York: Hastings House, 1974---$20.00) George Fox's Earthquake: The Story of a Movie (New York: Signet Film Series, 1974---$1.25, paper) 相似文献
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Abstract This study examined dissonance in physical activity (PA) between two youth-specific hip-derived intensity cut-points for the Actiwatch (AW), and compared PA between hip and wrist placements using site-specific cut-points. Twenty-four children aged 11.2?±?0.5 years wore the AW on the right hip and non-dominant wrist during a typical school day. Minutes of sedentary behaviour and vigorous activity were greater using Puyau et al. (2002) cut-points, but light, moderate, and moderate-to-vigorous (MVPA) were greater when derived using Puyau et al. (2004) cut-points (P?相似文献
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Rats foraged on a four-arm radial maze with one, two, three, and four food items (0.65.g pieces of cheese) placed on different arms (patches) of the maze. In two experiments, the hypothesis was tested that rats should carry food to the center of the maze more often when a patch contains one food item than when it contains multiple food items. Support for this prediction was found when the tendency to carry initial items encountered in patches was compared among the different sized patches. However, a further observation failed to support the hypothesis: Food carrying declined from first to last item encountered in multiple-item patches with clustered food items. Experiment 1 revealed that food carrying was reduced when travel time was increased by barriers placed at arm entrances. Both Experiments 1 and 2 indicated that the tendency for rats to carry food to the center of the radial maze increased as the distance of food encountered on an arm increased from the center. In both experiments, some rats dealt with the problem of multiple items by resorting to multiple-item loading, and some rats carried food items from the end of an arm to a point on the arm nearer the center for consumption. 相似文献
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Andy Hunt David M. Howard Ross Kirk Kingsley Ash Andy M. Tyrrell 《European Journal of Engineering Education》2001,26(2):91-106
This paper describes programmable multimedia systems, developed at the University of York, which are used extensively for teaching on a variety of music technology and mainstream engineering courses. Software and hardware systems are described for the physical modelling of acoustic spaces, and for constructing interactive synthesis and signal processing networks. Details are given on how these have been successfully integrated into higher education programmes at York. 相似文献
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