The significance of context for curriculum development in engineering education: a case study across three African countries     

Jennifer M. Case  Duncan M. Fraser  Anil Kumar  Ambrose Itika 《European Journal of Engineering Education》2016,41(3):279-292

Curriculum reform is a key topic in the engineering education literature, but much of this discussion proceeds with little engagement with the impact of the local context in which the programme resides. This article thus seeks to understand the influence of local contextual dynamics on curriculum reform in engineering education. The empirical study is a comparative analysis of the context for curriculum reform in three different chemical engineering departments on the African continent, located in Kenya, Tanzania and South Africa. All three departments are currently engaged in processes of curriculum reform, but the analysis shows how the different contexts in which these efforts are taking place exert strong shaping effects on the processes and outcomes for that reform.  相似文献   

The Effects of <Emphasis Type="Italic">Positive Action</Emphasis> on Preschoolers’ Social–Emotional Competence and Health Behaviors     

Sara A. Schmitt  Kendra M. Lewis  Robert J. Duncan  Irem Korucu  Amy R. Napoli 《Early Childhood Education Journal》2018,46(1):141-151

Children from low-income families are at greater risk for poor social–emotional development and physical health and may be in need of intervention. This study examined the extent to which the Positive Action (PA) preschool lessons improved low-income children’s social–emotional competence and health behaviors. Mixed findings emerged with regard to whether the lessons facilitated growth in child outcomes. Results showed positive effects of PA on children’s directly assessed social problem solving skills and their parent-rated social–emotional competence and health behaviors. Unexpectedly, program effects on teacher ratings of social–emotional competence were in the opposite direction. These findings provide preliminary evidence that PA may be effective in promoting positive social–emotional and health behavior outcomes for children, particularly when outcomes are assessed directly and by parents.  相似文献   

Learning Science Concepts by Teaching Peers in a Cooperative Environment: A Longitudinal Study of Preservice Teachers     

José-Reyes Ruiz-Gallardo  Duncan Reavey 《学习科学杂志》2019,28(1):73-107

Misconceptions of science principles are frequent among university students. This is particularly problematic in teacher education, as these misconceptions can be passed on by teachers to pupils at school. In this study, 40 preservice teachers studied 8 common misconceptions by 3 different approaches: learning by teaching (LbT) and learning from peers (LfP; both organized in cooperative groups and using self-developed activities) and conventional lecturing. Participants’ understanding was evaluated prior to, 1 month after, and 2 years after instruction, together with their views on the effectiveness of these methods for achieving learning. The 3 approaches improved scores on all posttests, but LbT achieved the best results. This coincided with perceptions of the participants who gave diverse reasons for the success of LbT. For lecturing, the longitudinal perspective showed that gains in student learning at 1 month had partially declined by 2 years, even though there was still a medium effect size compared to the pretest. However, for LbT and LfP gains remained statistically stable throughout. A combination of these methods might not only contribute efficiently to conceptual change for a good number of misconceptions but also connect teacher education to an almost real school classroom, giving opportunities to translate student learning into teaching practice.  相似文献   

Designing multimedia materials: A learning experience for all of us   总被引：1，自引：0，他引：1  

John Lidstone  Margot Duncan 《The Australian Educational Researcher》1996,23(3):13-27

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Reasoning across ontologically distinct levels: Students' understandings of molecular genetics   总被引：1，自引：0，他引：1  

Ravit Golan Duncan  Brian J. Reiser 《科学教学研究杂志》2007,44(7):938-959

In this article we apply a novel analytical framework to explore students' difficulties in understanding molecular genetics—a domain that is particularly challenging to learn. Our analytical framework posits that reasoning in molecular genetics entails mapping across ontologically distinct levels—an information level containing the genetic information, and a physical level containing hierarchically organized biophysical entities such as proteins, cells, tissues, etc. This mapping requires an understanding of what the genetic information specifies, and how the physical entities in the system mediate the effects of this information. We therefore examined, through interview and written assessments, 10th grade students' understandings of molecular genetics phenomena to uncover the conceptual obstacles involved in reasoning across these ontologically distinct levels. We found that students' described the genetic instructions as containing information about both the structure and function of biological entities across multiple organization levels; a view that is far less constrained than the scientific understandings of the genetic information. In addition, students were often unaware of the different functions of proteins, their relationship to genes, and the role proteins have in mediating the effects of the genetic information. Students' ideas about genes and proteins hindered their ability to reason across the ontologically distinct levels of genetic phenomena, and to provide causal mechanistic explanations of how the genetic information brings about effects of a physical nature. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 938–959, 2007  相似文献   

Family poverty, welfare reform, and child development   总被引：21，自引：0，他引：21  

Duncan GJ  Brooks-Gunn J 《Child development》2000,71(1):188-196

Our review of research suggests that family poverty has selective effects on child development. Most important for policy are indications that deep or persistent poverty early in childhood affects adversely the ability and achievement of children. Although the 1996 welfare reforms have spurred many welfare-to-work transitions, their time limits and, especially, sanctions are likely to deepen poverty among some families. We suggest ways policies might be aimed at preventing either economic deprivation itself or its effects.  相似文献   

The pension subsidy of educational inequality     

Cheryl Duncan  Michael Lovell 《Economics of Education Review》1989,8(4)

Public school teachers receive on retirement a pension typically equaling 75% of the average salary earned during the three peak years. While the teachers pay part of the costs of their defined benefit pension through payroll deductions, most of the cost is subsidized by the state. The pension subsidy, a far from neglible component of the per pupil cost of instruction, is particularly high in those school districts that pay high salaries and enjoy low student/teacher ratios. It is a regressive subsidy highly correlated with school district income and wealth. Several alternative reform measures are considered.  相似文献   

Adolescents at risk for violence     

Richard Lowry  David Sleet  Carlton Duncan  Ken Powell  Lloyd Kolbe 《Educational Psychology Review》1995,7(1):7-39

Interpersonal violence among youth is a growing problem in many communities and schools across the nation. The causes of violence are multiple and complex. This paper examines the extent and nature of interpersonal violence among youth as well as the individual and societal factors which contribute to youth violence. Adolescents are disproportionately represented as both victims and perpetrators of fatal and nonfatal assaultive violence. Homicide rates among young men in the United States are vastly greater than those of other Western industrialized nations. Persons age 12–24 years face the highest risk of nonfatal violent victimization of any segment of our society. Arrest rates for homicide, rape, robbery, and aggravated assault peak among adolescents and young adults. Further, arrest rates for murder and other violent crimes have increased substantially among this age group since the mid-1980s. Effective prevention programs will require combinations of interventions aimed at multiple factors and delivered through many channels.  相似文献   

Child sexual abuse: A study of prevalence in Great Britain   总被引：8，自引：0，他引：8  

M.B. Anthony W. Baker M.R.C. Psych.  B.SC. Sylvia P. Duncan B.Phil. Clin. Psych. 《Child abuse & neglect》1985,9(4):457-467

Of 2019 men and women (aged 15 years and over) interviewed as part of a MORI Survey of a nationally representative sample of Great Britain, 10% reported that they had been sexually abused before the age of 16 (12% of females; 8% of males). There was no increased risk associated with specific social class categories or area of residence. For all types of sexual abuse, the mean age of victims when first abused was significantly lower for females. Subjective reports of the effects of sexual abuse indicated that the majority (51%) felt harmed by the experience, while only 4% reported that it had improved the quality of their life. We estimate that there are over 4.5 million adults in Great Britain who were sexually abused as children, and that a potential 1,117,000 children will be sexually abused before they are 15 years of age. At least 143,000 of these will be abused within the family. The social and mental health implications are enormous, and the authors suggest that an effective intervention and prevention policy is urgently required.  相似文献   

A Role Study of the State Director of Guidance     

Jack A. Duncan 《Counselor Education & Supervision》1970,9(4):225-233

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