Mapping the knowledge structure exhibited by a cohort of students based on their understanding of how a galvanic cell produces energy          下载免费PDF全文

Adrian Sin Loy Loh  R. Subramaniam 《科学教学研究杂志》2018,55(6):777-809

This study evaluates the use of an open‐ended question to determine students' knowledge structure on the topic of galvanic cells. The open‐ended question was developed and administered to 163 Grade 10 students who had earlier completed a course on electrochemistry. Students' responses were marked as well as coded on the basis of the fields identified from their responses. This was then evaluated statistically to determine the collective knowledge structure of the sample of students. The knowledge structure thus mapped contains both canonical concepts and alternative conceptions (ACs). An important finding emerging from this study is that instructors need to focus student's attention on the dynamic processes involving electrons and ions during the operation of galvanic cells. In order for students to fully understand how a galvanic cell operates, they need to see the whole picture. There are three critical components that lead to students' understanding of how an oxidation–reduction reaction can generate energy and how a circuit is complete: transfer of electrons during oxidation–reduction half‐reactions, flow of electrons within metals, and migration of ions in solution. Also, we found that it is possible for students to use correct chemistry concepts in an incorrect way by establishing linkages among these in an inappropriate manner. We reiterate that apart from evaluating students' ACs, it is also important to evaluate the links between the concepts and conceptions present in students' knowledge structure so that teaching can be made more effective.  相似文献   

Component skills of text comprehension in less competent Chinese comprehenders   总被引：1，自引：0，他引：1  

Leong CK  Hau KT  Tse SK  Loh KY 《Annals of dyslexia》2007,57(1):75-97

The present study examined the role of verbal working memory (memory span and tongue-twister), two-character Chinese pseudoword reading (two tasks), rapid automatized naming (RAN) (letters and numbers), and phonological segmentation (deletion of rimes and onsets) in inferential text comprehension in Chinese in 31 less competent comprehenders compared with 37 reading comprehension control students and 23 chronological age controls. It was hypothesized that the target students would perform poorly on these cognitive and linguistic tasks as compared with their controls. Furthermore, verbal working memory and pseudoword reading would explain a considerable amount of individual variation in Chinese text comprehension. RAN would have a nonsignificant role in text comprehension. Structural equation analyses and hierarchical multiple regression analyses generally upheld these hypotheses. Our findings support current literature of the role of verbal working memory in reading comprehension found in English. The results, however, suggest differential role of the constructs and the tasks in reading comprehension and provide some answers for comprehension impairment in Chinese students.  相似文献   

The Future School Manager: Information and Communication Technology Aspects     

Kah Slenning 《Educational Media International》2013,50(4):243-249

This article argues that the competence demands of the future school manager in a decentralized system of local management of schools contain a variety of features that imply proficiency of the manager in use of ICT. The proficiency is not one of technical mastery only, but of communication habits, information processing and networking. The areas in which the use of ICT can be assumed to be prominent are, among others, the field of socio-cultural communication, the promotion of shared values, the continuous development of leadership and systems management - including the political system in which the local manager works, and the technical systems of administration and economy. The local manager in the decentralized system will necessarily depend on the use and mastery of ICT to be able to maintain an enlightened and efficient leadership, as well as an effective administration designed to raise the standards of education.

Le manager dans l'eacute;cole de l'avenir: aspects technologiques de l'information et de la communication

Cet article traite des exigences de compétence pour un manager de l'école de l'avenir dans un système décentralisé de gestion locale des écoles et contient une variété d'aspects qui impliquent une grande compétence dans l'utilisation des ICT. Cette compétence est non seulement une maîtrise technique mais des habitudes de communication, de traitement de l'information et de la mise en réseau. Les domaines dans lesquels on assume que l'emploi des ICT est essentiel sont fourni d'autres le champ de la communication socio-culturelle, la formation des valeurs partagés, le développement continu du leadership et la gestion des systèmes y compris le système politique dans lequel le manager travaille et les systèmes techniques de gestion et d'économie. Le manager local dans un système décentralisé dépendra nécessairement de l'utilisation et de a maîtrise des ICT pour être capable de maintenir un leadership éclaire et efficace aussi bien qu'une gestion efficiente ayant été concue pour élever les standards de l'éducation.

Die zukünftigen Schulmanager: Informations- und kommunikationstechnologische Aspekte

Dieser Beitrag belegt, daß zu den Kompetenzerfordernissen zukünftiger Schulmanager in einem dezentralisierten System lokal operierender Schulleitungen eine Reihe von Anforderungen gute Leistungen der Manager in der Nutzung der IKT gehören. Diese Fertigkeiten umfassen nun nicht nur die technische Beherrschung, Kenntnis von Kommunikationsgewohnheiten, Informationsverarbeitung oder Netzwerktechnologien. Neben diesen Bereichen sind es u.a. die sozio-kulturelle Kommunikation, die Förderung gemeinsamer Werte, die Weiterentwicklung von Führung und Systemmanagement -einschließlich des politischen Systems, in dem der lokale Manager selbst arbeitet, sowie die technischen Einrichtungen zur Verwaltung und von Wirtschaftlichkeit. Die örtlichen Manager in dezentralisierten Systemen werden notwendigerweise von der Nutzung und Beherrschung der IKT abhängig sein, um erfolgreiche Leitung und Verwaltung - auch bezüglich der Weiterentwicklung pädagogischer Standards - sicherzustellen.  相似文献   

Connecting research in science literacy and classroom practice: a review of science teaching journals in Australia,the UK and the United States, 1998–2008     

Seng Piew Loo 《Studies in Science Education》2013,49(1):45-77

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Behavioral Intention to Adopt Digital Library by the Undergraduates     

Krishna Moorthy  Loh Chun T'ing  Kiing Siew Ming  Chiong Chui Ping  Ler Yu Ping  Lim Qiao Joe 《International Information and Library Review》2019,51(2):128-144

The purpose of this research is to investigate the factors that affect undergraduates' behavioral intention to use digital library among the private universities in Malaysia. The target respondents are undergraduates from Malaysian private universities. Questionnaires were distributed among 500 undergraduates through either online or face-to-face method. Reliability test, normality test, Pearson Correlation Coefficient analysis, and Multiple Linear Regression (MLR) were carried out for data analysis. Performance expectancy, social influence, facilitating conditions, hedonic motivation, habit, and information quality had a positive and significant association with behavioral intention to adopt a digital library except for effort expectancy. This research successfully reinforced that the inspiration to ameliorate Unified Theory of Acceptance and Use of Technology 2 (UTAUT 2) by synthesis of Information Systems Success Model (ISSM). This proposed framework with a combination of ISSM and UTAUT 2 has enhanced the fitness of UTAUT 2. Universities that have yet to implement digital library can comprehend undergraduates' needs better by considering all the significant factors to develop a digital library. The universities with the digital library may also notice the important features of the existing digital library that should be maintained and upgraded constantly so that they can fulfil undergraduates' requirements.  相似文献   

Rupture and adaptation: British technical expertise to the Singapore Polytechnic and the transition to a nation-state     

Loh Kah Seng 《History of education》2015,44(5):575-594

The Singapore Polytechnic underwent a period of both rupture and adaptation as British advisers worked with the post-colonial government to facilitate technical education reform and Singapore’s transition to a nation-state. Established in 1958 and based on the metropolitan model, the Singapore Polytechnic constituted an imperial project for orderly development and decolonisation. It encountered criticisms from nationalists for its colonial links and a brief period of conflict between the advisers and the post-colonial People’s Action Party (PAP) government, underlining colonial Singapore’s uneven transition to its post-colonial future. However, the PAP quickly repaired its relationship with the advisers to plan the next phase of the Polytechnic’s development into a technical university in the 1960s. Unlike many other cases, the history of the Singapore Polytechnic suggests that technical experts, while tied to political interests, did not always fail.  相似文献   

Innovating teacher education in a complex era     

Oon Seng Tan 《Educational Research for Policy and Practice》2015,14(3):193-200

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Determination of clinically relevant content for a musculoskeletal anatomy curriculum for physical medicine and rehabilitation residents          下载免费PDF全文

Kristina Lisk  John F. Flannery  Eldon Y. Loh  Denyse Richardson  Anne M.R. Agur  Nicole N. Woods 《Anatomical sciences education》2014,7(2):135-143

To address the need for more clinical anatomy training in residency education, many postgraduate programs have implemented structured anatomy courses into their curriculum. Consensus often does not exist on specific content and level of detail of the content that should be included in such curricula. This article describes the use of the Delphi method to identify clinically relevant content to incorporate in a musculoskeletal anatomy curriculum for Physical Medicine and Rehabilitation (PM&R) residents. A two round modified Delphi involving PM&R experts was used to establish the curricular content. The anatomical structures and clinical conditions presented to the expert group were compiled using multiple sources: clinical musculoskeletal anatomy cases from the PM&R residency program at the University of Toronto; consultation with PM&R experts; and textbooks. In each round, experts rated the importance of each curricular item to PM&R residency education using a five‐point Likert scale. Internal consistency (Cronbach's alpha) was used to determine consensus at the end of each round and agreement scores were used as an outcome measure to determine the content to include in the curriculum. The overall internal consistency in both rounds was 0.99. A total of 37 physiatrists from across Canada participated and the overall response rate over two rounds was 97%. The initial curricular list consisted of 361 items. After the second iteration, the list was reduced by 44%. By using a national consensus method we were able to objectively determine the relevant anatomical structures and clinical musculoskeletal conditions important in daily PM&R practice. Anat Sci Educ 7: 135–143. © 2013 American Association of Anatomists.  相似文献   

线性分式规划的Frank-wolfe优化算法     

陈诚  杨森  李粉红 《商洛学院学报》2010,24(2):20-21

线性分式规划在经济管理领域有着广泛的应用,但分式规划是非线性优化模型,相对复杂。利用Frank-wolfe优化方法,将带有线性约束条件的一类线性分式规划转化为线性规划,求得此类线性分式规划的局部最优解;同时给出了算法的步骤,讨论了收敛性定理;通过数值实验,发现该算法具有迭代次数少等优点。  相似文献   

Editorial     

Oon Seng Tan 《Educational Research for Policy and Practice》2013,12(2):79-80

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