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John K. Lannin Matthew Webb Kathryn Chval Fran Arbaugh Sarah Hicks Cynthia Taylor Rebecca Bruton 《Journal of Mathematics Teacher Education》2013,16(6):403-426
Recent research efforts (Schmidt et al. in The preparation gap: teacher education for middle school mathematics in six countries, MSU Center for Research in Mathematics and Science Education, 2007) demonstrate that teacher development programs in high-performing countries offer experiences that are designed to develop both mathematical knowledge and pedagogical knowledge. However, identifying the nature of the mathematical knowledge and the pedagogical content knowledge (PCK) required for effective teaching remains elusive (Ball et al. in J Teacher Educ 59:389–407, 2008). Building on the initial conceptual framework of Magnusson et al. (Examining pedagogical content knowledge, Kluwer, Dordrecht, pp 95–132, 1999), we examined the PCK development for two beginning middle and secondary mathematics teachers in an alternative certification program. The PCK development of these two individuals varied due to their focus on developing particular aspects of their PCK, with one individual focusing on assessment and student understanding, and the other individual focusing on curricular knowledge. Our findings indicate that these individuals privileged particular aspects of their knowledge, leading to differences in their PCK development. This study provides insight into the specific aspects of PCK that developed through the course of actual instructional practice, providing a lens for future research in this area. 相似文献
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The effect of wheel running on the level and temporal distribution of schedule-induced polydipsia was examined in 12 food-deprived rats given one food pellet per minute for 1 h. For all rats, wheel running decreased the level of Polydipsie intake. It also decreased licking in all six of the 10-sec postpellet intervals except the first. The degree of reduction in licking was a U-shaped function of the 10-sec postpellet intervals and was generally inversely related to the temporal distribution of running. The temporal distribution data are partially consistent with a temporal competition view of the interactions between schedule-induced polydipsia and wheel running 相似文献
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Cora McCloy 《国际体育史杂志》2013,30(9):1155-1170
The Canadian federal government has a history of financing the hosting of large-scale international sport events, beginning with the 1930 Hamilton British Empire Games. Since the 1961 Fitness and Amateur Sport Act, the number, cost and impact of hosting these events has grown exponentially in an era of increasing efforts to showcase the nation on an international stage. Hosting events routinely results in a large infusion of government funding: the upshot is intensive bid competitions. Immediately following the act, the federal government furtively worked towards a hosting policy to guide its efforts in that regard. This paper tracks events and government processes influencing the development of a rational and planned approach for selecting those events (and cities) that benefited amateur sport and met other federal goals. A relatively obscure but key sport policy is uncovered and examined: the 1967 federal sport hosting policy. 相似文献
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Anthony L. Riley Cora Lee Wetherington Ashley M. Wachsman Harris A. Fishman Mary A. Kautz 《Learning & behavior》1988,16(3):292-298
Animals poisoned following the schedule-induced consumption of saccharin initially continued to drink following spaced pellet deliveries. Neither the initiation of postpellet drinking (i.e., bout, initiation) nor the size and duration of the bouts was effected by the conditioned aversion procedure. With repeated conditioning trials (i.e., repeated pairings of saccharin and LiCl), schedule induced drinking was eventually reduced. The specific components underlying schedule-induced consumption, however, were differentially affected by the aversion training. Specifically, the decrease in schedule-induced drinking was effected primarily by a decrease in licking occurring between 10 and 60 sec after pellet delivery. Bout initiation and licking immediately postpellet (i.e., within the first 10 sec following pellet delivery) were most resistant to suppression and appeared to be responsible for the relative insensitivity of schedule-induced drinking to conditioned taste aversions. The differential effects of taste aversion conditioning on individual components of elicited behavior are discussed. 相似文献
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Cora Lingling Xu 《British Journal of Sociology of Education》2017,38(5):610-624
Drawing on in-depth interview data from 31 mainland Chinese (MLC) students in a Hong Kong university, this article conceptualises MLC and Hong Kong higher education as two dissonant but interrelated subfields of the Chinese higher education field. The article argues that these MLC students’ habitus, one that possesses rich economic, social and cultural capital, prompts a strong sense of entitlement to anticipated privileges. However, this sense of entitlement is disrupted by the differential capital valuations across these fields. There is thus notable habitus–field disjuncture, which, exacerbated by the hysteresis effect, gives rise to a sense of disappointment and ambivalence. This article demonstrates how the Hong Kong education credential, which these students initially set out to pursue as a form of capital, can become a disadvantage at multiple levels; the article illustrates that capital valuation and conversion in a transborder context is not a straightforward, but rather a complicated and sometimes contradictory, process. 相似文献
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Consumption of food pellets was examined in four water-deprived rats during 1-h sessions in which water was presented once every 30, 60, or 120 sec independently of the rats’ behavior according to three fixed-time (FT) schedules. Correlated with each FT condition was a continuous reinforcement (CRF) control condition in which the rats received, at the start of the session, the number of dipper presentations that were programmed to occur during the corresponding FT condition. During both the FT and CRF conditions, pellets per dipper presentation decreased and food intake rate increased with rate of water presentation, and there was a direct linear relation between log food intake and log water intake. For each of these three measures there was less eating under the FT condition than under the CRF condition, but the difference between the FT and CRF functions decreased at shorter FT values. These data are discussed in terms of the effects of amount of water on food consumption and the principle of temporal summation. 相似文献