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991.
Onno?De?JongEmail author Jan?Van?Driel 《International Journal of Science and Mathematics Education》2004,2(4):477-491
In chemical education, many secondary school students experience difficulties in understanding three mutual related meanings of topics, that is, the macroscopic meaning, the microscopic meaning, and the symbolic meaning. As a consequence, student teachers should be prepared carefully to learn how to teach this difficult issue. This article presents a naturalistic case study of the development of eight student teachers pedagogical content knowledge (PCK) of the multiple meanings of chemistry topics. The student teachers (all M.Sc.) participated in a teacher education program of which the initial phase focused on learning from teaching instead of learning of teaching. They were asked individually to choose and teach a chemistry curriculum topic with a focus on the macro-micro-symbolic issue. Research data were obtained by interviewing the student teachers individually before and after the lessons. The outcomes indicated a development of student teachers knowledge of teaching difficulties, for instance, too fast and mainly implicit reasoning between macro- and micro-meaning, and a dominant orientation towards the micro-meaning of topics. A development of knowledge of students difficulties was also indicated, for instance, difficulties in understanding the macro- and micro-meaning of reaction equations. Implications for the follow-up phases of the program are presented. 相似文献
992.
993.
This study evaluates the effects of an intervention aimed at improving representational flexibility in linear-function problems. Forty-nine students aged 13–16 participated in the study. A pretest–intervention–posttest design with an experimental and control group was used. At pretest, both groups solved a choice test, where they could freely select a table, a graph, or a formula, and three no-choice tests, where they used predetermined representations. Twenty-five students in the experimental group were exposed to the intervention, where they learnt to fine-tune their choices both to the task at hand and to their own characteristics as representational users. The control group was not exposed to any intervention. The posttest was similar to the choice pretest. A flexibility score was calculated per student based on Siegler and Lemaire’s score. At posttest, the experimental group became more flexible than the control group. The impact of increased flexibility on problem-solving accuracy and speed is discussed. 相似文献
994.
This study examined the relation of information processing in 7-month-old preterms (<1750 g at birth) and full-terms to Bayley Mental Development Indexes (MDIs) at 2 and 3 years. The infant measures were drawn from four cognitive domains: attention, speed, memory, and representational competence. Structural equation modeling showed that these measures of infant information processing mediated the effects of prematurity, and that there was a cascade of effects, with infant processing speed influencing memory and representational competence, which in turn influenced later MDI. This study shows that infant information processing mediates the effect of prematurity on later cognition, and delineates pathways whereby infant abilities relate to one another and to later outcome. 相似文献
995.
Anouk Van Der Wildt Piet Van Avermaet Mieke Van Houtte 《School Effectiveness & School Improvement》2017,28(1):136-152
Mainstream teachers struggle with linguistic diversity, often leading to restricting multilingualism. Scientific research, however, recommends including pupils’ home languages in school. Various qualitative studies have evaluated implementations in schools and indicated possibilities for improving teachers’ attitudes towards multilingualism. This paper evaluates an experimental implementation targeting an increase in tolerance towards multilingualism. The implementation was facilitated by external school coaches and consisted of 3 experimental tools affecting the school. Data originated from 62 Flemish primary schools (of which half were experimental schools) that participated in 3 survey waves (2012 and 2014; 763 teachers completed both waves). We used multilevel regression. We concluded that the implementation leads to higher rates of tolerance. The fulfilment of the basic conditions needed for a successful change was important, and the linguistic diversity of the pupil population and the investment by external school coaches did not affect the tolerant practices of teachers towards multilingualism. 相似文献
996.
The role of social support in well-being and coping with self-reported stressful events in adolescents 总被引:3,自引:0,他引:3
OBJECTIVE: This study investigated the role that social support plays in well-being and in coping after a stressful event in a group of non-clinical adolescents. Furthermore, this study aimed at replicating the finding that adolescents who reported sexual abuse reported more symptoms and less adequate coping strategies than adolescents who reported another type of stressful event or no stressful episode. METHOD: Eight hundred and twenty adolescents between 12 and 18 years of age filled out questionnaires assessing social support (Social Support Questionnaire, Sarason, Shearin, Pierce, & Sarason, 1987), trauma-related symptoms (Trauma Symptom Checklist for Children, Briere, 1996), behavior problems (Youth Self-Report, Achenbach, 1991), and coping (How I Cope Under Pressure Scale, Ayers, Sandler, West, & Roosa, 1996). RESULTS: 42% of the adolescents reported a stressful experience, and 4.4% reported sexual abuse. Sexually abused adolescents reported more stress-related symptoms and used more avoidance and fewer support-seeking coping strategies than the other adolescents. The main-effect hypothesis of social support was sustained, but social support did not moderate the relation between a stressful event and coping. Yet, a trend was found suggesting that high support from the family was associated with less avoidance coping and more support-seeking in adolescents who reported a non-sexually abusive, stressful event. CONCLUSIONS: Our findings show that a highly perceived availability of social support is directly associated with fewer trauma-related symptoms, especially in adolescents who are non-sexually abused. For adolescents who reported a sexual or another type of stressful event, social support did not play a different role in coping. 相似文献
997.
H. T. Van Der Molen H. G. Schmidt G. Kruisman 《European Journal of Engineering Education》2007,32(5):495-501
The objective of the current study was to investigate the personality characteristics of a group of engineers with a variety of years of experience. It was executed to remedy shortcomings of the literature concerning this issue and to produce suggestions for a postgraduate training programme for engineers. A total of103 engineers were tested with the five-factor personality inventory (FFPI), a ‘big five’ personality test of Dutch origin. The engineers were shown to score lower on the factor agreeableness, and higher on the factors extraversion, conscientiousness, emotional stability, and autonomy than a national comparison group. The older the engineers, the more conscientious and autonomous they were. In addition, engineers with lower degrees were more conscientious than engineers with higher degrees. A practical implication of the findings for the postgraduate training of engineers is that more attention should be paid to the development of interpersonal skills. 相似文献
998.
Catherine Gabelica Piet Van den Bossche Mien Segers Wim Gijselaers 《Educational Research Review》2012,7(2):123-144
This paper reviews the literature on the effects of feedback provided to teams in higher education or organizational settings. This review (59 empirical articles) showed that most of the feedback applications concerned “knowledge of results” (performance feedback). In contrast, there is a relatively small body of research using feedback conveying information regarding the way individuals or the team performed a task (process feedback). Moreover, no research compared the effectiveness of process versus performance feedback. Concerning feedback effectiveness, half of the studies implementing performance feedback research reported uniformly positive effects while the other half resulted in positive effects on some dependent variables and no effect on others. All the studies using solely process feedback showed mixed positive results: some dependent variables improved while some others did not change. None of the studies reported any negative effects. This review also highlighted 28 key factors supporting feedback interventions effectiveness. 相似文献
999.
Xenia Vamvakoussi Wim Van Dooren Lieven Verschaffel 《Educational Studies in Mathematics》2013,82(2):323-330
This study tested the hypothesis that intuitions about the effect of operations, e.g., “addition makes bigger” and “division makes smaller”, are still present in educated adults, even after years of instruction. To establish the intuitive character, we applied a reaction time methodology, grounded in dual process theories of reasoning. Educated adult participants were asked to judge the correctness of statements about the effect of operations. Their accuracy and reaction times were measured. For items where the correct answer was not in line with the assumed intuitions, more mistakes were observed; moreover, we found longer reaction times for correct responses, indicating that these intuitions interfere in participants’ reasoning on these tasks, even when they provide a correct response. 相似文献
1000.