• School Mathematics
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• v.11 no.1
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• pp.71-91
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• 2009

The purpose of this study was to analyze operation sense in detail with regard to division of fraction. For this purpose, two sixth grade students who were good at calculation were clinically interviewed three times. The analysis was focused on (a) how the students would understand the multiple meanings and models of division of fraction, (b) how they would recognize the meaning of algorithm related to division of fraction, and (c) how they would employ the meanings and properties of operation in order to translate them into different modes of representation as well as to develop their own strategies. This paper includes several episodes which reveal students' qualitative difference in terms of various dimensions of operation sense. The need to develop operation sense is suggested specifically for upper grades of elementary school.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.11
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• pp.4310-4319
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• 2010

In 21th century moving rapidly up to the knowledge and information society, creative problem-solving abilities are preferentially required to engineers. Though there may be various approaches to develop such abilities, PBL instruction method can be an effective alternative to develop such abilities. Recognizing this, one 'JPBL' model was constructed and introduced in this study. The model was developed independently based general existing PBL models and applied to university students to analyze its effectiveness in the aspect of class satisfaction and organizational commitment. Based on results, the meaning and limitation of the model development were discussed.

• Korean Journal of Culture and Social Issue
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• v.22 no.3
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• pp.455-485
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• 2016

The purpose of this research is to investigate adult's perception of elderly parents care and differences of related variables between family structures. There were 1,258 participants(age 45; male=601, female=657; 1,111=nuclear, 147=extended). The measures yielded Cronbach α=.67~.95, inter-judger reliability= 95.1%, Kappa=.95. The results showed that, first, there were no significant differences between two family structures in terms of SES excepting academic career. Second, there were significant differences between two family structures in family relation, psychological characteristics. That is, adults in the extended family, versus those in the nuclear family, provide greater emotional support to children, sacrificed more towards children, and have greater expectations for children supporting them when they retire. Also, adults in the extended family displayed greater self-efficacy and happiness. Third, there were significant differences between two family structures in caring for elderly parents. Adults in the extended family apportioned a greater parent's allowance, and more number of meals with parents, and spent more time talking with parents, and displayed greater degree of filial piety and more caring behavior towards parents. Fourth, as for the perception of caring for elderly parents according to family structure, when adults were asked about "the best way to care for parents", the most frequent response was providing a peace-of-mind for parents. As for "the most difficult aspect of caring for parents", differences in opinions followed by financial difficulty were the most. As for "the best aspects of caring for parents", the most frequent responses were good for children's upbringing and family harmony. Based on the results, suggestions for further research have been discussed.

• Journal of the Korean Chemical Society
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• v.58 no.3
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• pp.303-312
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• 2014

In this study, we analyzed the characteristics of science academic achievement by multiple culture and North Korean migrant students types, percentage of correct answer and discrimination per items per groups, and contents domains using quantitative and qualitative method in the National Assessment of Educational Achievement (NAEA). As a results of analysis, the degree of science academic achievement of the students from multiple culture and North Korean is much lower than that of the general students. Also, the science academic achievement of the students from multiple culture and North Korean migrant is different from the general students. Especially, science academic achievement of the immigrated students and the North Korean migrant students was lowest. The analysis of items that the difference of the percentage of correct answer was large showed that the students from multiple culture and North Korean migrant were equally weak to it in all contents domains, but that the students from international marriage family born in country were weak in some areas. Therefore, the appropriate the teaching and learning method and the educational support is needed considering the group situation, so the educational implications are discussed.

• Journal of Engineering Education Research
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• v.9 no.4
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• pp.46-62
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• 2006

The purpose of this study is to identify characteristics which are related with design problem solving. For this, an effective problem solver and an ineffective problem solver have been compared and analyzed in terms of the process of design problem solving with a population of students who are enrolled in College of Engineering. This study can be concluded as follows. First, the process of design problem solving was performed in non-linear form and it was varied depending on individuals. Second, the results of problem solving could be varied according to the qualitative level of performance in each stage rather than according to the differences of consumption time by each stage. Third, the main activities in process of design problem solving were identifying a design brief, identifying requirements, exploring a problem solution, and idea modeling. Fourth, the making activities took place most frequently and the longest time in the entire process, meanwhile exploring a problem solution was related to the results of design problem solving.

• The Journal of the Korea Contents Association
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• v.10 no.7
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• pp.326-336
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• 2010

The purpose of this research is to analysis of difference about university curriculum of secretary from ethnographic research. The research participant 4 years is the university graduate. The participant who is selected is the practical career person of 3 or more years that Works at the Seoul individual enterprise. The specialist verified continuously about research truth and ethical from collection of data and analytical process. The research method and analysis results are as follows : First, Martial art and sports relation subject is more protocol secretary and secretary subject. But emphasized an importance about protocol secretary and secretary subject. Second, The male emphasized that Specialist training and segmentation in major field of study. The woman emphasized that women's studies and protocol secretary, culture of high-level class. Third, They have emphasized difference about private security in professionalism of curriculum.

• The Journal of the Korea Contents Association
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• v.10 no.10
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• pp.255-266
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• 2010

This study aims to discover the relations between physical activities of the elderly and their health-related quality of life. For the study, it targeted 720 of the 778 elderly persons whose ages were above 65 for a final analysis except 58 whose physical activities and health-related quality of life could not be evaluated from the data of the first year of the 4th Korea National Health and Nutrition Examination Survey(KNHANES IV-1), 2007. As a result, it was discovered that there were significant differences in the elderly's health-related quality of life according to age, education, sleeping hours, stress, the number of chronic diseases and subjective awareness of health. In particular, there were significant differences in their health-related quality of life between the group with high physical activity level and the group with low physical activity level. Based on the results above, it is suggested that the persons with higher performance ability of physical activities can have higher quality of living along with increase of energy and further studies dealing with more factors, ranges and periods are needed.

• Journal of the Korean School Mathematics Society
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• v.18 no.3
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• pp.281-309
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• 2015

The purpose of this study is provides an implication of further teaching learning process by analyze the common and difference and characteristic of mathematical self-efficiency between three peer tutoring groups discourse in the mathematical teaching leaning process that use peer tutoring. To achieve this goal, three groups formed that consist of one peer tutor who received a first grade of mathematic achievement and one peer student. Peer student of each group is divided into high grade, middle grade, low grade of mathematic achievement. Then analyze the discourse in the exponential function problem solving process. Based on the results of study, this paper provides a concrete example of merit of peer tutoring on the peer tutor. Result of study also provides a practical help to make a peer tutoring group by considering a difference of grades between peer tutor and peer student. Because there is a possibility of mutual discourse on the tutoring group that consist of similar grades.

• Korean Journal of Environment and Ecology
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• v.31 no.4
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• pp.365-380
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• 2017

Rapid changes in the flora of exotic species are ecological problems that cause the alteration of national and regional biota. The purpose of this study is to identify the reality of neophyte flora currently inhabiting in Korea. Having analyzed a total of 151 studies published up until 2016, we found the qualitative and quantitative gaps among the preceding studies due to the lack of rigorousness on the application of the spatial and temporal level of exotic species and academic terminology. In this study, the neophyte is defined as the flora introduced temporarily after the Enlightenment in Korea (late 19th century) and spatially in the Eastern Asiatic Province of the Takhtajan's floral region instead of a country boundary. A total of 326 taxa of 184 genera of 39 families were identified and analyzed for their distributional origin and habitat characteristics. Approximately 87% (285 taxa) was a component of the single-layered herb vegetation, and a total of 211 taxa originated from Europe and North America which are the same temperate biome as Korea. The wetland vegetation components were much fewer with 21 taxa, but they included a large number of invasive alien species that caused critical deterioration in the habitat structure and function of aquatic ecosystems. Ecological approaches to exotic species categories such as Ephemerophyten and Apophyten have emerged.

• Journal of Gifted/Talented Education
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• v.25 no.6
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• pp.799-815
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• 2015

The gifted Education has been grown up a lot although it has several problems in terms of the quality of the gifted education programs after legislated the Promotion of Education for the Gifted and Talented Law during the last ten-year period. So the purpose of this study was to investigate teachers' perceptions of the national standards gifted education program and the problems in managing of the gifted education program. The conclusions according to the analysis are as follows. First, it has analyzed that gifted teachers recognize the lack of teaching and learning materials, regional level difference of the gifted children, Redundancy of program in the grade and school levels in managing of the gifted education as the problems. Second, it was found that perception of most gifted teachers about necessity of the National Standards Gifted Education Program development was very positive. Also, it has shown that gifted teachers expect the education with the overlapped contents and teaching methods would be managed differently, the difficulty of the topic selection could be resolved, and the quality of the gifted education by the programs development of various aspects would be increased. Especially, gifted teachers expect that the problem from the lack of gifted education continuity of school levels could be resolved by development of the National Standards Gifted Education Program. Therefore, for the improving quality of gifted education with resolving the problem from the Contents Redundancy and the lack of gifted education continuity of school levels, the national standards gifted education program should be studied developed as soon as possible.