Cognitive load in algebra: element interactivity in solving equations     

Bing Hiong Ngu  Siu Fung Chung  Alexander Seeshing Yeung 《教育心理学》2015,35(3):271-293

Central to equation solving is the maintenance of equivalence on both sides of the equation. However, when the process involves an interaction of multiple elements, solving an equation can impose a high cognitive load. The balance method requires operations on both sides of the equation, whereas the inverse method involves operations on one side only. In an experiment, middle school students (N?=?71) were randomly assigned to the balance and inverse methods to complete a pre-test, an acquisition phase and a post-test. Pre-test and post-test comparisons found that the inverse group outperformed the balance group for those equations that involved high element interactivity. Instructional efficiency measures further confirmed that the balance method imposed higher cognitive load. The inverse method was capable of reducing cognitive load due to the interacting elements.  相似文献   

Effective ranking and search techniques for Web resources considering semantic relationships     

Jihyun Lee  Jun-Ki Min  Alice Oh  Chin-Wan Chung 《Information processing & management》2014

On the Semantic Web, the types of resources and the semantic relationships between resources are defined in an ontology. By using that information, the accuracy of information retrieval can be improved.  相似文献   

Opinion Versus Knowledge: The Influence of Testimony Format on Children’s Judgments in Morally Relevant Contexts     

Jee Young Noh  Laura Marie Elenbaas  Kyung Ja Park  Young Sun Chung  Melanie Killen 《Early education and development》2017,28(2):240-254

Research Findings: To test children’s use of testimony of others, 3 – 9 years (N = 227) made judgments about a potential peer transgression in which the intentions of the protagonist were ambiguous, after hearing two different forms of testimony. The 2 forms of testimony were (a) opposing opinion-based testimony from an adult authority versus a peer consensus group and (b) knowledge-based testimony (eyewitness testimony) that was counter to the participants’ initial judgments. Findings revealed that when testimony was presented in an opinion-based format, children were likely to side with the opinion that reflected their own interpretation of the peer encounter, regardless of whether the opinion came from a peer consensus or an adult authority. However, when knowledge-based testimony was introduced in support of the opposite of children’s initial interpretation of the ambiguous peer encounter, children most often changed their initial judgment to align with the new testimony. That is, children used knowledge-based testimony but not opinion-based testimony to evaluate a potential transgression. Practice or Policy: These findings demonstrate that the way in which testimony is delivered to children has a direct influence on their decision making about peer interactions and has relevance for teacher–student discourse in the classroom.  相似文献   

The Perfect Marriage? – Language and Art Criticism in the Hong Kong Public Examination Context          下载免费PDF全文

Chung‐yim Lau  Cheung‐on Tam 《The International Journal of Art & Design Education》2017,36(1):61-70

Art education in Hong Kong has undergone various changes in response to educational reform. In art assessment, a major change in the Hong Kong New Senior Secondary (NSS) Curriculum is the inclusion of art criticism as a compulsory component of the new public examination. Assessing students’ abilities to interpret art in an art criticism public examination context is a critical issue in Hong Kong because the new senior secondary curriculum and assessment has brought attention to the role of written language in the art examination paper. This means the examination assesses not only students’ abilities to interpret art, but also their language abilities required to respond to art in written form. Since this new mode of assessment of art criticism has been published a number of issues have appeared. Recent studies show that teachers and students perceive this development negatively and they believe that the written format will assess students’ written language abilities rather than their critical abilities. These findings challenge the justification of the new art assessment policy and raise questions about the role of written language in responding to art. This article aims to raise the issue of the marriage between language and art criticism in the Hong Kong public examination context. It argues and examines the relationship of language to art interpretation, reasoning in the assessment, and issues in the public art criticism examination context. The issues addressed in this article provide opportunities for researchers and policy makers to reconsider and refine the new form of examination.  相似文献   

East Asian screen industries     

Hsiao-Ling Chung 《Cultural Trends》2011,20(2):201-204

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SNS use by the Korean government: a case of Me2Day     

Chung Joo Chung  Seong Eun Cho 《亚洲交流杂志》2014,24(1):25-41

This study examines the debates and discussions surrounding the Korean government's Me2Day, the largest social networking and microblogging site in the country used by 26 government bureaus, including the Blue House. Me2Day users post messages composed of up to 150 characters and establish links with other users through multimedia-based information and knowledge obtained from their browsers, desktop computers, e-mail messages, and mobile phones. This study provides a better understanding of the characteristics and structures of cyberspace communication between the Korean government and citizens. The results indicate that although each bureau had different goals in terms of using Me2Day, users were more likely to use the service if their bureau actively posted messages or responded to user comments. Users tended to have critical attitudes toward the Korean government when they were allowed to freely post messages and share information.  相似文献   

Efficient probabilistic XML query processing using an extended labeling scheme and a lightweight index     

Jung-Hee Yun  Chin-Wan Chung 《Information processing & management》2012

Recently there is a growing interest in the data model and query processing for probabilistic XML data. There are many potential applications of probabilistic data, and the XML data model is suitable to represent hierarchical information and data uncertainty of different levels naturally. However, the previously proposed probabilistic XML data models and query processing techniques separate finding data matches with evaluating the probabilities of results. Therefore, they should repeatedly access the data and need to get full data of paths given in queries to calculate the probabilities of results.  相似文献   

Longitudinal relationships between syntactic skills and Chinese written composition in Grades 3 to 6     

Pui-sze Yeung  Connie Suk-han Ho  David Wai-ock Chan  Kevin Kien-hoa Chung 《Journal of Research in Reading》2020,43(2):201-228

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Where is the “theory” within the field of educational technology research?     

Khe Foon Hew  Min Lan  Ying Tang  Chengyuan Jia  Chung Kwan Lo 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(3):956-971

Critics often characterise the study of educational technology as under-theorised. To test this assertion and to determine the extent of this criticism, the present paper reports an in-depth analysis of the 503 most recent empirical articles published in three selected education-technology-related journals (Computers & Education; Learning, Media and Technology; and British Journal of Educational Technology). These journals were selected because they publish studies related to all education settings rather than focusing on only a certain segment such as higher education; they have broad geographical catchment; and they were the most highly ranked journals in terms of their 2017 journal citation impact factor. The present paper examines how explicitly existing theory was identified in previous research, how theories were applied and how often these theories were advanced in education technology research. In the majority of cases, explicit engagement with theory was absent. Many studies either were wholly bereft of theories or made vague use of theory. Where theory was explicit, the articles were more likely to use theory to conceptualise the research, to inform the data collection or analysis process and to discuss the results. Very few articles reported findings that help us to learn something new about a particular theory (ie, little evidence of theory advancement).  相似文献   

Executive functioning and word reading in Hong Kong Chinese children: A 1-year longitudinal perspective     

Wing Kai Fung  Kevin Kien Hoa Chung  Chun Bun Lam 《Journal of Research in Reading》2020,43(3):382-393

This study examined the bidirectionality between kindergarten children's executive functioning (EF) and word reading across two time points. Participants were 523 Hong Kong Chinese-speaking children (mean age at Time 2 = 64.59 months; 52.9% male) and their parents. At Time 1, children were administered the measures of EF skills: inhibitory control, attention shifting, working memory and Chinese word reading. They were reassessed with these measures at Time 2 one year later. Results from the cross-lagged panel model revealed that, controlling for child age, gender and parental education levels, children's word reading at Time 1 was significantly predictive of their working memory at Time 2, but that the three EF skills at Time 1 were not predictive of word reading at Time 2. These findings underscored the role of early word reading in promoting children's working memory.  相似文献