• School Mathematics
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• v.18 no.4
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• pp.839-856
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• 2016

In 2009 revision and 2015 revision mathematics national curriculum, 'proof' was moved to high school from middle school in consideration of the cognitive development level of students, and 'proof by contradiction' was stated in the "success criteria of learning contents" of the first year high school subject while it had been not officially introduced in $7^{th}$ and 2007 revision national curriculum. Proof by contradiction is known that it induces a cognitive conflict due to the unique nature of rather assuming the opposite of the statement for proving it. In this article, based on the logical, mathematical and historical analysis of Proof by contradiction, we looked about the introductions and the applications of the current textbooks which had been revised recently, and searched for improvement measures from the viewpoint of discovery, explanation, and consilience. We suggested introducing Proof by contradiction after describing the discovery process earlier, separately but organically describing parts necessary to assume the opposite and parts not necessary, disclosing the relationships with proof by contrapositive, and using the viewpoint of consilience.

• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.1
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• pp.1-11
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• 2004

Cultural value is widely accepted as the crucial concept in understanding consumer behavior: cultural values influence consumption values, which determine choices of consuming everyday products and services. The objectives of this study were to (a) identify the difference between cultural and consumption values in the Korean fashion industry and (b) to explain the difference using the existing theories introducing fashion system, which are Solomon(2002)'s cultural production model in marketing area and Hamilton(1997)'s fashion system arbiter in clothing area. The qualitative data used to identify cultural values were 160 apparel advertisements listed in a fashion magazine issued in 2002. Utilizing the convenient sampling method, the quantitative data used to identify consumption values were gathered by surveying female university students aged over 20 living in the Seoul metropolitan area. Of 369 returned questionnaires, 255 were used in factor analysis and paired t-test. Cultural value ignored functional aspect of apparel while it was one of the most salient factors for consumption value. With respect to success and fashion orientation factors, cultural value highly appreciated them while they were the least considered factors for consumption value. These implicate that the Korean fashion industry can be explained by Hamilton's macro-level cultural and fashion system arbiters and cultural production model as well. Introducing macro-level perspectives about fashion system, this study encourages researchers to expand their research spectrum from micro-level consumers to macro-level fashion industry, which has long been neglected by the fashion marketing researchers in Korea.

• Korean Journal of Social Welfare
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• v.35
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• pp.205-229
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• 1998

Although experts have called for increased collaboration between families and school systems, the actual programs for such efforts were not introduced. Thus, this study attemps to develop school-based parent education program for home-school collabration. PEP was developed through the circular process, which consist of planning, design, enactment, and evaluation. The group process of PEP was analyzed qualitatively and the effectiveness of outcomes was examined by nonparametric statistical analysis. Two factors contributed to success of PEP were as follows: 1) Increased homogenities, such as children's developmental stage, same school enrollment, and sense of community belongingness. 2) Consistency and continuity between PEP and Mental Health Prevention Program for students. Through the PEP based on these factors, parents' strong commitment was established and tangible results such as increased knowlege and fluent coping skills regarding children's problematic behaviors were found. Implications for home-school collaboration were explored, as are recommendations for how PEP can be prepared to link between families and schools.

• Journal of Digital Convergence
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• v.16 no.1
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• pp.317-325
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• 2018

A satisfactory ending of the project is crucial for the students to achieve success experience. In this study, we analyze the teams' dismantling before the project deadline. We propose a team dissolution model based on the assumption that the disharmony caused by the members' personality traits is the main reason for the team break up. The Dark Triad and the Communion are introduced to build the model. We simulated the proposed model using an agent-based simulation and analyzed the results. We found that the ratio of owning DT impacts the maximum allowable size of the team and the team's rate of dissolution, but the team has been able to reduce the team's dissolution rate by increasing the team's harmony. We expect that we efficiently used the developed model with the agent-based simulation for the studies related to the dismantling of teams.

• Journal of The Korean Association of Information Education
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• v.21 no.3
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• pp.277-284
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• 2017

Software Education will be implemented at elementary, middle and high schools starting in 2018. The goal of software education is to help students develop Computational thinking skills. Especially, using robots in software education increases student interest and helps to increase creativity. In order for software education using robots to be effective, education for teachers should be effective. The development of effective education contents for preliminary teachers can be said to be the success of software education. By the way, effective education can be said to begin with an accurate analysis of the subjects. In order to develop an effective curriculum for preliminary teachers, it is necessary to grasp the level of preliminary teachers who will carry out the software education using robots. Therefore, in this paper, we surveyed the experiences, levels and perceptions of preliminary teachers to help develop software education curriculum using robots.

• Journal of Digital Convergence
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• v.16 no.7
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• pp.55-62
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• 2018

American charter schools are independent public schools of choice, freed from rules but accountable for results. Charter schools have celebrated the 25th anniversary of its creation in 2017 and become part of landscape of public education in America. However, little research has been conducted on an individual charter school. This study aimed to examine the major factors of a successful charter school. A qualitative approach was employed. Seven one-hour in-depth interviews were conducted with semi-structured interview questions. And four teachers were participated. The conclusions are as follows: First, there is the combination of system and cultural factors as major successful factors of the Dayton Early College Academy. Second, system factors are the gateways and the advisory that is a twin at the charter school. The findings are considered to be applied for Korean educational settings and the implications can be used for policy development in Korea.

• Journal of Korea Society of Industrial Information Systems
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• v.12 no.5
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• pp.173-182
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• 2007

e-Learning can be seen as not only one of Internet based information systems which can provide education services, but also one of teaching-learning methods which can implement self-directed learning. This paper tests factors affecting the e-Learning performance based on information systems success model and self-efficacy theory using a field study. Questionnaires are collected from 216 students who are enrolling a e-learning class using online survey. The results are following: first, the service quality and self-efficacy are significant predictors of use intention, but system quality and information quality are not. second, the system quality, information quality, service quality and self-efficacy are significant predictors of user satisfaction. Third, use intention and user satisfaction are found to be a strong predictor of the learning performance.

• Journal of Korean Home Economics Education Association
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• v.20 no.1
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• pp.21-44
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• 2008

The purpose of this study was to analyse the possibilities and legitimacies for using integrated essay on Home Economics Education, and to suggest the instructional design. Integrated Essay consisted with three composers, subject(students), object(texts), and strategy(thinking abilities). The results of theoretical analysis, socio-constructionalism by Vygotsky, the deconstructional literacy criticism by Derrida, and cognitive psychological approach by Beyer, Wood et al, Hayes were supported the integrated essay in instruction for Home Economics Education. Also, essay tests types of university entrance exams in Korea, previous researches of thinking ability in Home Economics Education, and essay questions in textbook were analysed. As results, theoretical framework, instruction process, and instruction design for integrated essay in Home Economics Education were developed. The possibility of integrated essay is high but it's real estimate will success when Home Economics Education realize it's nature.

• Journal of the Korean Institute of Educational Facilities
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• v.21 no.5
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• pp.3-12
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• 2014

The purpose of this study is to propose a framework to analyse the educational effects and outcome of the boarding middle school established following the merger and abolition of small schools in rural area. According to the decrease in birth rate and reduction of population in rural area, primary schools have brought about many problems for decrease of number of student, and environment of education have became deteriorated. Accordingly, primary schools be required improvement, and it should be altered placement of schools because it change number of student, distance and time of attending school, and formation of school zone are changed by alternating of human and physical environment. Merger and abolition of primary school is inevitable for change of placement standard to primary school and qualitative improvement of environment of education in rural area. This study suggests 1)educational effects and outcome, 2)changes and benefits of student's living conditions, 3)social effects to local community, and 4)economical efficiency analysis as a new framework to evaluate the validity of establishing a school. It sets up a hypothesis that the students, parents and community satisfy the boarding school in rural area, a school record be improved and the abolition of schools have little effect on community. Finally, it emphasizes that in order to success the policy of the merger of small schools and the boarding middle school, it be attributed to the social-cultural environment based on local residents and community and required provision of a variety of utilization plans reflecting local specifics and guarantee of local residents' participation and selection.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.6
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• pp.1830-1837
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• 2008

The growth of an information and knowledge based society has changed the base of education from institution-based to a learner-based system. This indicates that the educational purpose and individual characters of the learners are the primary factors for the educational success. In the information and knowledge based society, the Cyber University is a representative example of the new educational paradigm with its online communities, multi-media based education and communication among the learners. The sample of study was 1620 students of a leading cyber university in Seoul, Korea. One of the results in this study showed that satisfaction levels of learning and education do not have significant relationship with age or employment. Rather the lowering level of satisfaction after sufficient adaptation period of cyber education was raised as rising problem.