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Recent research shows that, as students interpret the demands of the assessment tasks, they vary their approaches to learning in order to cope with the assessment tasks. Three research questions are central in the present paper: (1) Do students who participate in a constructivist learning environment change their perception of assessment demands towards more deep level demands? (2) Do students in a constructivist learning environment change their approaches to learning towards a more deep approach to learning? (3) Is there a relation between change in approaches to learning and change in the perceptions of the assessment demands? Students following the course ‘Education and psychology’ of the teacher training program at the University of Antwerp completed questionnaires during the first, the second and the final lesson of the course. One questionnaire measured their approaches to learning and the other their general perceptions of the assessment demands. The course ‘Education and psychology’ can be labelled as a ‘constructivist learning environment’ with congruent assessment methods. Results of the paired sampled t-tests indicated that students indeed do change their perceptions of assessment demands towards more deep level demands. However, the results also indicated that students did not change their approach to learning towards a more deep approach. On the contrary, students seem to develop more surface approaches to learning during the course. Correlation analyses indicated that only changes of perceptions of assessment demands towards less surface levels are significantly related to changes in approaches to learning, towards a more surface approach. Results of the stepwise multiple regression analyses indicated that students’ approach to learning at the beginning of the course seems to have a higher impact on the extent to which they change their approach to learning than how students perceive the demands of the assessment within the course. These results point us to the complexity of the relationship between the learning environment, the students’ perceptions of assessment demands, and students’ approaches to learning.  相似文献   

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Research on teachers’ professionalism and professional development has increased in the last two decades. A main focus of this line of research has been the cognitive component of teacher professionalism, i.e., professional knowledge. Most of the previous studies on teacher knowledge—such as the Learning Mathematics for Teaching (LMT) (Hill et al. 2004), the Professional Competence of Teachers, Cognitively Activating Instruction, and Development of Students´ Mathematical Literacy (COACTIV) (Baumert et al. 2010), and the Mathematics Teaching in the 21st Century (MT21) (Schmidt et al. 2007) studies—have been conducted in the field of mathematics teachers’ pedagogical content knowledge (PCK) and content knowledge (CK). There have been few comparable studies conducted with science teachers, especially biology teachers. To fill the gap, this study examines the development and use of instruments to measure biology teachers’ CK and PCK. In particular, this study describes a method to develop reliable, objective, and valid instruments measuring teachers’ CK and PCK in four steps by the use of empirical data of students. Additionally, the study explores whether CK and PCK might be measured as separate knowledge categories by using a paper-and-pencil test. This paper presents a theoretical model that guides test development and provides steps to develop and validate the instruments. Details are also provided regarding the computation of the Rasch scale score measures for 158 biology teachers. The results indicate that the instruments measured teachers’ CK and PCK in an objective, valid, and reliable way. This suggests that the new instruments can be used in combination with classroom observations to examine teaching quality and further its relation to student learning.  相似文献   

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esponse curves of SMA to NE and Ca~(2 ) on 1,2h after shock shifted to the right,the maximal contractions(Emax) of NE and Ca~(2  相似文献   

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The objective of the present study was to compare the toxicity and availability of Fe(Ⅱ) and Fe(Ⅲ) to Caco-2 cells.Cellular damage was studied by measuring cell proliferation and lactate dehydrogenase (LDH) release. The activities of two major antioxidative enzymes [superoxide dismutase (SOD) and glutathione peroxidase (GPx)] and differentiation marker (alkaline phosphatase) were determined after the cells were exposed to different levels of iron salts. The cellular iron concentration was investigated to evaluate iron bioavailability. The results show that iron uptake of the cells treated with Fe(Ⅱ) is significantly higher than that of the cells treated with Fe(Ⅲ) (P<0.05). Fe(Ⅱ) at a concentration>1.5 mmol/L was found to be more effective in reducing cellular viability than Fe(Ⅲ). LDH release investigation suggests that Fe(Ⅱ) can reduce stability of the cell membrane. The activities of SOD and GPx of the cells treated with Fe(Ⅱ) were higher than those of the cells treated with Fe(Ⅲ), although both of them increased with raising iron supply levels. The results indicate that both Fe(Ⅱ) and Fe(Ⅲ) could reduce the cellular antioxidase gene expression at high levels.  相似文献   

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The phenomenon of “digital divide” is complex and multidimensional, extending beyond issues of physical access. The purpose of this study was to develop a scale to measure a range of factors related to digital divide among higher education faculty and to evaluate its reliability and validity. Faculty’s Information and Communication Technology Access (FICTA) scale was tested and validated with 322 faculty teaching in public and private sector universities. Principal components analysis with varimax rotation confirmed an 8-factor solution corresponding to various dimensions of ICT access. The 57-item FICTA scale demonstrated good psychometric properties and offers researchers a tool to examine faculty’s access to ICT at four levels – motivational, physical, skills, and usage access.  相似文献   

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It is well known that many pupils are bullied and suffer in a variety of ways as a result. This study looks at a largely overlooked outcome of bullying that may have direct consequences for academic success – disrupted concentration and attention to school work. Using pupil perceptions as the source of data, the two main aims were to quantify the proportion of pupils affected by bullying in this way, and to solicit their views on possible solutions. Subsidiary aims were to test for gender and school year differences in these variables. Among the 485 participants as a whole, only modest levels of disruptions attributable to bullying were evident but more disturbing was the finding that on nine out of eleven separate questions, around one in twenty pupils reported that this happened ‘lots of times’. The most common solutions provided by pupils to help children affected in this way involved:
  1. helping them feel safe from bullying in class;

  2. reminding them to disclose/seek help if they are bullied;

  3. encouraging teachers to be supportive of victims of bullying;

  4. encouraging teachers to be on the look out for signs that pupils have been bullied; and

  5. using social support from other pupils.

No significant sex or school year differences were found.  相似文献   

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The researcher examined the influence that school contextual factors have on American preservice teachers’ sense of preparedness to teach and culturally responsive teaching self-efficacy appraisals. The findings suggest that preservice teachers in this study felt more prepared and confident to teach in a suburban school compared to an urban school. Additionally, preservice teachers felt less prepared and confident to teach English Language Learners regardless of their enrolment in an urban or suburban school. This study has implications for the preparation of teachers who are self-efficacious in their ability to teach in both urban and suburban educational settings.  相似文献   

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The lack of diversity in the teaching profession is recognised internationally [Schleicher, A. 2014. Equity, Excellence and Inclusiveness in Education: Policy Lessons from around the World. Paris: OECD]. Research shows consistently that teachers from majority socio-economic and ethnic groupings dominate, often in contrast to school populations. While studies in the USA and the UK have shown that teachers with disabilities are significantly under-represented compared to the general population, there has been a dearth of research in this area in Ireland, including in relation to initial teacher education (ITE). Following a review of the literature and an overview of the study’s methodology, we present findings exploring 2014 ITE applicants and entrants with respect to their dis/ability status and intersections with other socio-demographic variables based on data gathered in the Diversity in Initial Teacher Education in Ireland national research project, establishing the first national dataset about disability in Irish state-funded ITE. While we identified increases in the proportion of disabled students entering ITE, especially at postgraduate level, applicants with disabilities were significantly less likely to be accepted into undergraduate primary ITE than were those without, and there was considerable variation in the proportions from different categories entering ITE. We end by discussing the significance and implications of our findings in terms of practice, policy, and further research.  相似文献   

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1 Introduction Recentlyphthalocyanines (Pcs)asorganicsemicon ductorshaveattractedmoreattentionbecausetheyareverystable .Pcs possessbetter photoelectricalpropertiesandhighlyabsorptioninthevisiblelightre gion .SomepropertiesofPcscanbeimprovedalotbybondingtop…  相似文献   

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The purpose of this study is to investigate the relationships among students’ conceptions of knowledge building, approaches to knowledge building, knowledge-building behaviors and learning outcomes. A total of 48 primary school students (from grades 3 and 4) who had experienced knowledge-building activities participated in the present study. After analyzing the students’ interview responses using the phenomenographic method, qualitatively different and hierarchically related conceptions and approaches were revealed. The results indicated that the students with fragmented conceptions tended to use surface approaches to knowledge building while those with cohesive conceptions tended to adopt deep approaches. The findings also indicate that the students with cohesive conceptions or deep approaches were more likely to have better learning outcomes than those with fragmented conceptions or surface approaches.  相似文献   

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In this paper a conceptual model of instruction “the six mirrors of the classroom” used as a frame for teaching a learning topic, the microorganisms are depicted. The paper consists of four sections: (a) the six mirrors of the classroom model (SMC); (b) the SMC as implemented in the expository and cooperative modes of instruction in classrooms and results; (c) a “Journey of Inquiry into the Wonderful World of Microorganisms” (JIWWM), developed according to the Science–Technology–Environment–Peace–Society (STEPS) approach; and (d) teaching and learning the JIWWM, in ninth-grade classes, within the SMC model. The results show that science topic can be taught in the frame of the mirrors of the classroom. When the instructional goals of the teachers used the mirror “1, classroom organization” and mirror “6, pupils’ social behavior” and the third ring around the all six mirrors cooperative skills were practiced, academic outcomes were achieved, and attitudes toward environmental preservation and peace improved. The SMC model can serve as a valuable tool for teachers, since it can design their teaching and learning settings in a more controlled environment, in terms of objectives, teachers’ and students’ social behaviors, and academic outcomes.  相似文献   

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In this paper, we investigate university students’ interaction in an attempt to construct a model of elliptic geometry. In order to study the several ways in which geometrical meaning is produced through context and practices, we introduce three different types of use of geometrical concepts, namely as (1) elements of representation of spatial experience, (2) objects of traditional school practice, and (3) constituents of an abstract mathematical theory. The analysis of students’ dialog according to this framework reveals how students develop their ability to communicate mathematically and negotiate their meanings. Students with a different use of geometrical concepts were able to interact and understand their peers.  相似文献   

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Di Rooks 《Literacy》1998,32(1):24-28
Storytelling is a feature of the language curriculum which often receives positive recommendation but yet which is still perceived as marginal to the more serious business of teaching children to read and write. Di Rooks here challenges this marginalisation and her work suggests a more fundamental place for storytelling.  相似文献   

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It intends to explore the roles earth plays in Michael K’s passive resistance against the patriarchal authority.Inspired by Homi Bhabha’s concept of“unhomeliness”,it illustrates how earth gives K the sense of homeliness.As the female is closely connected to earth,it also explains how earth helps K get free from the patriarchal wars.By portraying a deformed colored K,Coetzee expresses that the disadvantaged and inferior could resort to mother earth to get freedom and dignity.The female features of protection and nurture are crucial to help the discriminated groups to resist the patriarchal authority.  相似文献   

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The present studies examined the proposition that there are approach and avoidance dimensions in feelings of obligations, that are associated with a specific network of behaviors, affect, and cognitions in achievement situations. Across 4 studies, results indicated that being motivated by ought-approach was associated with significantly higher positive affect and persistence compared with being motivated by ought-avoidance. Also, arousal and affect could be explained by one's disposition for approach- or avoidance-based oughts. Being motivated by ought-approach was significantly more adaptive compared with avoidance and multiple-ought terms. It was concluded that obligations based on approach or avoidance tendencies represent diverse motivational systems with different cognitions and affective responses.  相似文献   

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