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Martin Oliver Katerina Avramides Wilma Clark Jade Hunter Rose Luckin Cecilie Hansen 《Teacher Development》2018,22(4):587-606
Sharing teachers’ professional knowledge remains challenging. Teachers’ development often remains ad hoc or local, and attempts to scale this up have proved problematic. To address this, research in areas such as ‘learning design’ has explored the use of formal representations of practice. This proposes that educational practice can be improved by documenting, sharing and building on what teachers already do. Whilst this has led to some successes, it has not resulted in the widespread transformation of practice. This paper reviews the literature about sharing teacher knowledge. The challenges of scaling up development are then considered in relation to two theories that help explain the challenges: Communities of Practice and Sociomateriality. This analysis is illustrated through case studies in Norway and the UK. These show that teachers already create and share artefacts that represent their pedagogic knowledge. However, they found formal representations, such as learning designs, difficult to work with. The paper concludes that scaling up teacher development using abstract formalisms is unlikely to succeed. Instead, teachers value stories and the materials they already create in their day-to-day practice. It is this intermediate level of representation, between direct experience and formal abstraction, that offers the most promise for sharing practice. 相似文献
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Recent handbooks of giftedness or expertise propose a plethora of conceptions on the development of excellent performance but, to our knowledge, there are no comparative studies that provide empirical evidence of their validity to guide researchers and practitioners in their adoption of a particular conception. This study sought to close that gap by conducting an empirical comparison of the major approaches to giftedness and expertise currently in use: the IQ model, the performance model, the moderator model, and the systemic model. The four models were tested in a longitudinal study with a sample of N = 350 German students attending university preparatory schools; 25% of the sample had been assigned to special classes for the gifted. The construct and predictive validity of the four models were tested by means of structural equation modeling. Theoretical considerations along with our results indicated a differentiation among the models whereby some could only predict while others could also explain the emergence of excellent performance and thereby yield valuable information for the design of interventions. The empirical comparison of the approaches showed that they were unequally suited for the two challenges. For prediction purposes, the performance approach proved best while, for explanations, the moderator and systemic approaches were the most promising candidates. Even so, the latter did demonstrate conceptual and/or methodological problems. The IQ approach was superseded by the other approaches on both prediction and explanation. Implications and limitations of the findings are discussed. 相似文献
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R. Nalini C. R. Wilma Delphine Silvia Purnima M. Makhija Sheila Uthappa 《Indian journal of clinical biochemistry : IJCB》2005,20(1):165-168
Prognostic factors influence the modality and course of therapy in breast cancer. These include both histopathological and
biochemical variables. This study was aimed to find out if any correlation exists between the biochemical tumor marker-serum
CA 15.3, and the lymph node staging of Nottingham’s Prognostic Index (NPI). It was observed that serum CA 15.3 showed a statistically
significant correlation with lymph node staging of NPI. Therefore it is concluded that CA 15.3 can be utilized as a useful
prognostic marker, particularly in cases where histopathological variables such as tumor size and grade have been altered
by pre-operative chemotherapy. 相似文献
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Goal‐Directed Correlates and Neurobiological Underpinnings of Adolescent Identity: A Multimethod Multisample Longitudinal Approach 
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下载免费PDF全文 Andrik I. Becht Marieke G.N. Bos Stefanie A. Nelemans Sabine Peters Wilma A.M. Vollebergh Susan J.T. Branje Eveline A. Crone 《Child development》2018,89(3):823-836
This multimethod multisample longitudinal study examined how neurological substrates associated with goal directedness and information seeking are related to adolescents’ identity. Self‐reported data on goal‐directedness were collected across three biannual waves in Study 1. Identity was measured one wave later. Study 1 design and measurements were repeated in Study 2 and extended with structural brain data (nucleus accumbens [NAcc] and prefrontal cortex gray matter volume [PFC]), collected across three biannual waves. Study 1 included 497 adolescents (Mage T1 = 13.03 years) and Study 2 included 131 adolescents (Mage T1 = 14.69 years). Using latent growth curve models, goal directedness, NAcc, and PFC volume predicted a stronger identity one wave later. These findings provide crucial new insights in the underlying neurobiological architecture of identity. 相似文献
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The word “acceleration” continues to generate controversy. Although the literature makes it clear that acceleration in its various guises is a positive intervention for many gifted students, educational practitioners in Australia continue to resist the evidence and campaign actively against allowing students to take this option. This article synthesizes 3 research projects conducted in New South Wales, Australia, exploring different forms of acceleration. The first project involved an investigation of the Early Entry policy for gifted children in one region of the state; the second reports on the experiences of students who skipped at least 1 grade; and the third examines a vertical programming system that allows students to accelerate within subjects at an academically selective high school. Based on these research studies, this article explores the issues that are at the center of the acceleration debate. 相似文献
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While claims of the importance of attribution theory and teachers’ expectations of students for student performance are repeatedly
made, there is little comprehensive research identifying the perceptions preservice teachers have of students with learning
disabilities (LD). Accordingly, 444 Australian preservice primary school teachers were surveyed using vignettes and Likert-scale
questions, to ascertain their responses to students with and without LD. It was found that preservice primary school general
education teachers held a negative attribution style towards students with LD. Preservice primary teachers perceived students
with LD as a lacking ability in comparison to others in the class. Recommendations for research and training programmes conclude
the paper. 相似文献