Learning residential electrical wiring through computer simulation: The impact of computer‐based learning environments on student achievement and cognitive load

Multimedia learning environments such as computer simulations are widely accepted as tools for supporting science learning. Although the design of multimedia learning environments can be domain specific, few studies have focused on the use of computer simulations for learning residential electrical wiring. This study aimed to determine whether students using computer simulations learned better than traditional classroom learners in the domain of residential wiring. A quasi‐experiment was implemented with 169 high school students. The simulation group participated in a series of computer simulations, whereas the control group received lectures and demonstrations from an instructor. Students' cognitive load as elevated by multimedia leaning tasks was compared with that of students learning using traditional methods. The simulation group learned significantly better and reported higher cognitive load than did the control group. Moreover, the simulation group managed cognitive resources more efficiently on transfer of learning than did the control group. Having more opportunities to interact with a simulation‐based learning environment could result in higher cognitive load. The higher cognitive load seemed to result in better performance on the achievement test and, therefore, the learners' mental effort was possibly invested mainly in meaning making in the virtual learning environments. Discussion of the results, instruments and research design, as well as suggestions for future studies are provided.     

Change and Continuity in the Singapore Literature-in-English Curriculum

This paper examines contestations over the value of Literature in the secondary school curriculum in the former British colony of Singapore and the way the Literature curriculum has been framed to understand the various issues surrounding the role of Literature education. Using Raymond Williams’ framework of dominant, residual and emergent ideologies, I show how the dominant perception of Literature study in Singapore as a decontextualised humanistic and aesthetic subject is influenced by its residual British colonial legacy. Significant official changes, fundamentally conservative, have been driven by the governing ideology of instrumental pragmatism and are tied to twin aims of economic well-being and national belonging. The conservative view of Literature education prevents the adoption of emergent views of Literature education as hybrid, multimodal and critical. A pragmatic re-evaluation of the aims of Literature education in the twenty-first century is required to regain renewed significance for the subject.     

Gender differences in factors associated with how parents communicate with school in Korea

The authors explored different factors that were associated with mothers' and fathers' choice between two forms of parent–school communication: school briefing sessions and parent–teacher conferences. A total of 585 parents—295 mothers and 290 fathers from different households—who had at least one child enrolled in middle school in Korea were surveyed. Analytic results indicated that there were gender differences in how mothers and fathers were motivated to communicate with school. More educated and affluent mothers who positively assessed their child's academic achievement but were less confident in the child's ability and dissatisfied with the school-provided information were more likely to communicate with the school, whereas fathers were influenced by the employment status of their wives and communication with the child. Perception of positive child–teacher relationship predicted both mothers' and fathers' engagement in communication. Based on the findings, the authors discuss ways to promote parental involvement in communication with school.     

Sense through the wall system development and design considerations

This paper presents system design challenges and issues with sensing through walls at different standoff distances and wall types. Efforts for developing sense through the wall (STTW) systems, such as those undertaken by the US Army Technology Objective (ATO) program, aim at providing the soldier with situational awareness information before breaching a building in a military operations in urban terrain (MOUT) environment. STTW capabilities also support law enforcement and search and rescue applications. Since 2002, extensive evaluations of STTW technologies, most notably those performed by the Communications Electronics, Research, Development and Engineering Center (CERDEC) Intelligence and Information Warfare Directorate (I2WD), have been made to determine which technology could be the most viable solution. After conducting comprehensive studies, I2WD initiated several Phase I efforts and Phase II efforts. The purpose behind both efforts was to develop various STTW technology demonstrators under a 5 year ATO. Many lessons learned during the development of Phase I systems were incorporated into the considerations for Phase II developments. This paper discusses design challenges and issues with sensing through walls at different standoff distances and wall types through lessons learned and results from modeling and simulations performed by the Army Research Laboratory.     

How to Help Teachers Develop Inquiry Teaching: Perspectives from Experienced Science Teachers

This study has two purposes: the first is to explore experienced science teachers’ perspectives on inquiry teaching, and the second is to categorize these perspectives into patterns. Fifteen junior high school science teachers experienced at inquiry teaching were selected, and a semi-structured interview was conducted to collect the teachers’ perspectives on inquiry and inquiry teaching. The findings indicate that these experienced science teachers hold multiple perspectives on inquiry and inquiry teaching. The two patterns generated from these teachers’ perspectives of inquiry and inquiry teaching were systematic-based inquiry instruction and learning-based inquiry instructions. Suggestions for science teacher educators are discussed in this paper.     

中国薯蓣属细胞分类的研究——染色体数与该属起源和演化

本文继续报道了薯蓣属(Dioscorea L.)块茎类5个组(sect．  Combilium Pr．et Burk.，Sect. Lasiophyton  Pr．  et  Burk.，  Sect.  Opsophyton  Uline，  Sect． Shannicorea  Pr.  et  Burk.，  Sect. Enantiophyllum Uline)23个种和变种的染色体数，并对一些分类群进行了讨论。它们都是基数为10的多倍体，是本属进化的类型。  根据染色体数的演化和二倍体种类的地理分布，我们推论我国横断山脉地区可能是薯蓣属的起源中心。     

对大学健康教育体系的研究

通过调查研究 ,分析了我国高校实施健康教育的现状及存在的认识不足、内容和方式方法简单、组织实施不规范等问题 ,进而构建了大学健康教育的目标、内容、途径和方法体系 ,以及管理机制。为强化高校健康教育工作 ,提出了新的发展思路和基本框架。     

Communicating Values,Valuing Community through Health-Care Websites: Midwifery's Online Ethos and Public Communication in Ontario

Drawing on the rhetorical concept of ethos, this study explores the professional identities, health-care relationships, and forms of community constructed by two midwifery websites in Ontario. Rather than facilitating communal and dialogic modes of communication with the public, these websites enact primarily a unidirectional consumption model. This design structure both reflects and reinforces the complexities of midwifery's recent shift from being an explicitly alternative form of health care, to becoming part of the dominant health-care framework.     

Television news is government news in Taiwan patterns of television news sources selection and presentation

Based on a content analysis of evening newscasts by the three television stations in Taiwan, this study examines the patterns of news sources selection and presentation in television news. The results of this study show that television news relies heavily on government officials who are primarily middle‐aged men in executive positions located in the capital city of Taipei. These findings suggest that the central government officials in Taipei appear to be the primary definers of social reality. TV news portrays only a very limited view of the society. In conclusion, this study suggests that with the management and content tightly controlled by the state, Taiwan's television news consists primarily of official rituals.     

Developing a Framework for Analyzing Definitions: A study of The Feynman Lectures

One important purpose of a definition is to explain the meaning of a word. Any problems associated with a definition may impede students' learning. However, research studies on the definitional problems from the perspective of physics education are limited. Physics educators may not be aware of the nature and extent of definitional problems. As an example, The Feynman Lectures of Physics suggest that there are at least four problems of definition: precision, circularity, context and completeness in knowledge. Feynman had the tendency of mentioning the words ‘define’ and ‘definition’ and discussing the problems of definition: they can be insightful, or challenge the conventional, preconceived notions of many physical concepts. One benefit of this study is that a framework can be developed to improve statements of definitions. This framework may guide educators or students to analyze the knowledge that is embedded in a definition. In the future, the learning of definition need not be content-oriented, but problem-based instead, with the help of definitional problems. Therefore, the use of these problems of definition in lessons can be an interesting area for future physics education research. Furthermore, we should be cognizant of inadequacies or inaccuracies in definition that may result in alternative conceptions.