The purpose, design and use of examples in the teaching of elementary mathematics     

Tim Rowland 《Educational Studies in Mathematics》2008,69(2):149-163

This empirical paper considers the different purposes for which teachers use examples in elementary mathematics teaching, and how well the actual examples used fit these intended purposes. For this study, 24 mathematics lessons taught by prospective elementary school teachers were videotaped. In the spirit of grounded theory, the purpose of the analysis of these lessons was to discover, and to construct theories around, the ways that these novice teachers could be seen to draw upon their mathematics teaching knowledge-base in their lesson preparation and in their observed classroom instruction. A highly-pervasive dimension of the findings was these teachers’ choice and use of examples. Four categories of uses of examples are identified and exemplified: these are related to different kinds of teacher awareness.

Tim RowlandEmail:

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Development & validation of scientific video vignettes to promote perception of authentic science in student laboratories     

Insa Stamer  Hanno Pönicke  Frederike Tirre  Antti Laherto  Tim Höffler  Stefan Schwarzer 《Research in Science & Technological Education》2020,38(2):168-184

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Impact of a Temporary Food Shortage on Children and Their Mothers     

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   

Language Development at Home and School: Gains and losses in young bilinguals     

Tim Parke  Rose Drury 《Early Years: An International Journal of Research and Development》2001,21(2):117-127

In this paper we examine the topic of the language development of three young bilingual children at both home and school. Our aim is to consider the language issues that arise in such children, taking into account their parents' language background and experience of school systems, language practices and 'policy' in the home, and the children's experience of a year of nursery school as reported by their teachers. We try to show how different strands of the children's experience fit together; their 'mother tongue', their mothers' aspirations for them, their teachers' view of their progression, and their competence in English, all considered against the background of current curriculum guidance. We conclude with an examination of the gains and losses these children have made in the school system so far, and with an analysis of what the roles of 'mother tongue' might be for children in these and similar circumstances.  相似文献   

Schulformwechsel im zweigliedrigen Schulsystem     

Ricarda Albrecht  Marko Neumann  Malte Jansen  Michael Becker  Kai Maaz  Jürgen Baumert 《Zeitschrift für Erziehungswissenschaft》2018,21(4):839-865

This study focuses on students who change from the academic to the non-academic school track after grade 7 (probationary year) in Berlin. We examined which individual student characteristics (e.?g., performance, school biography, family background) predict school change after the probationary year. We were particularly interested as to whether there are secondary effects of social background, after controlling for differences in performance. Our analyses were based on data from a study which included a whole cohort of school track changers (N?=?754) who were compared with students that remained at the academic track (N?=?1470). In order to predict the change of school type, multivariate logistic regression analyses were performed. Results revealed significant differences between both groups regarding all observed characteristics. Performance-related characteristics were the best predictors of track change. After controlling for these characteristics, no further significant effects for other predictors were observable (i.?e., no secondary effects of social background were present).  相似文献   

The use of open data as a material for learning     

Coughlan  Tim 《Educational technology research and development : ETR & D》2020,68(1):383-411

Educational technology research and development - Open data has potential value as a material for use in learning activities. However, approaches to harnessing this are not well understood or in...  相似文献   

Abusive head trauma in Maine infants: medical,child protective,and law enforcement analysis     

Ricci L  Giantris A  Merriam P  Hodge S  Doyle T 《Child abuse & neglect》2003,27(3):271-283

OBJECTIVE: To collect and compare the results of medical, child protective, and law enforcement evaluation of a sample of Maine children who were victims of abusive head trauma (AHT) in order to describe the clinical and evaluative characteristics as they relate to victims, families and perpetrators of such trauma and to improve the professional response to AHT in Maine.METHOD: Retrospective chart review of medical, child protective, and law enforcement records of all AHT victims admitted to two tertiary care hospitals in Maine or seen by the state medical examiner from 1991 to 1994.RESULTS: Nineteen children (age range 2 weeks to 17 months) were identified as victims of AHT (out of a total of 94 head trauma admissions) accounting for 20 hospitalizations during the study period. There was a history of prior injury in 30%, history of prior medical evaluations for possibly abuse related problems in 65%, while, on presentation, 75% had evidence or history of prior injury. The hospitals notified child protective services (CPS) in all 20 cases and correctly identified abuse in 18 (90%). Parental risk factors for abuse identified in CPS records included substance abuse (53%), domestic violence (42%), criminal history (32%), unrealistic expectations (42%), and attachment problems (32%). However, risk factors were inadequately assessed in 53% of homes. Law enforcement identified a likely perpetrator in 79% of cases and in the majority the identified suspect was the father. In the 15 cases where a perpetrator was identified by law enforcement, that person was alone with the child at symptom onset in 14 (93%).CONCLUSIONS: The medical response, at least at the inpatient level, was generally well done with regard to suspicion and reporting. Cases are possibly being missed at the outpatient level. Child protective risk assessment was limited overall yet in a third of the homes where AHT occurred, few if any risk factors were present to aid in identification and prevention. Law enforcement results suggest that a primary suspect for AHT is the caretaker alone with the child at the time of symptom onset.  相似文献   

Planning education and training in the developing countries   总被引：1，自引：0，他引：1  

János Timár 《Prospects》1976,6(2):231-239

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University research in flux: Policy debate in Australia     

Alan Lindsay  Ruth Neumann 《Higher Education》1987,16(4):433-448

After a brief golden age Australian university research faces a difficult future. Two notions, utility and concentration, have become the catchwords of the emerging policy initiatives. Both have tended to be interpreted narrowly and simplistically, utility as having immediate technological applications that will bring economic benefits, and concentration to argue for breaking the teaching-research nexus, reducing the research workforce and thus achieving cost savings. As proposed, both initiatives require more centralised control of research policy and funding. Despite the outstanding record of Australia's universities in research and the absence of evidence to support the benefits claimed for the new initiatives, the pressure for change is gaining momentum. The problems facing Australian universities have much in common with those in other Western countries, although unique solutions must be sought for every setting. This paper argues that, in Australia, the adoption of the easy solution of increased concentration, short-term utility, and centralised control, is likely to compromise the established excellence and diversity in basic research, and to lead to an overall reduction in the scale of university research. Before any changes are instigated, there is a pressing need for a broad-ranging review based on widespread participation in a debate about needs and priorities, and rigorous research into the performance of the existing system and the potential benefits of the changes proposed.  相似文献   

Academic Self-Handicapping: What We Know, What More There is to Learn   总被引：17，自引：0，他引：17  

Tim Urdan  Carol Midgley 《Educational Psychology Review》2001,13(2):115-138

Some students put off studying until the last minute, fool around the night before a test, and otherwise reduce effort so that if their subsequent performance is low, these circumstances will be seen as the cause rather than lack of ability. These strategies are called self-handicapping because they often undermine performance. In this paper, we begin with a definition of academic self-handicapping. Next, we review our research in which we used achievement goal theory as a framework for examining academic handicapping among elementary and middle school students. We discuss the implications of the recent conceptualization of approach and avoidance components of performance goals for handicapping. We conclude with a consideration of some potentially fruitful future directions for research on academic self-handicapping, focusing particularly on individual differences in handicapping, contextual influences, and the methods used to study handicapping.  相似文献