• The Mathematical Education
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• v.44 no.4 s.111
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• pp.627-651
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• 2005

This study was conducted to attain an in-depth understanding of students' mathematical representations and to present the educational implications for teaching them. Twelve mathematical tasks were developed according to the six types of problems. A task performance was executed to 151 third graders from four classes in DaeJeon and GyeongGi. We analyzed the types and forms of representations generated by them. Then, qualitative case studies were conducted on two small-groups of five from two classes in GyeongGi. We analyzed how individuals' representations became elaborated into group representation and what patterns emerged during the collaborative small-group learning. From the results, most students used more than one representation in solving a problem, but they were not fluent enough to link them to successful problem solving or to transfer correctly among them. Students refined their representations into more meaningful group representation through peer interaction, self-reflection, etc.. Teachers need to give students opportunities to think through, and choose from, various representations in problem solving. We also need the in-depth understanding and great insights into students' representations for teaching.

• The Mathematical Education
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• v.52 no.4
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• pp.531-547
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• 2013

The purpose of the study is to examine how effects of activities using Google SketchUp on students' spatial ability and 3D geometric thinking in measuring the volume of solid figures. By comparing the results from pre- and post-tests between the experimental group and control group, we found that activities using Google SketchUp help students improve their spatial ability in the spatial orientation and visualization. In addition, more than half students in the experimental group moved from level 4 up to level 7 in thinking process of measuring the volume in terms of Battista(2004)'s levels. This study suggests that the instruction with Google SketchUp can help to improve students' spatial ability and 3D geometric thinking in the regular class in middle school. In addition, SketchUp can be an advanced technological tool to support students' self-directed learning, which create an efficient educational environment and a great opportunity to learn geometry in an effective manner.

• Journal of Welding and Joining
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• v.14 no.1
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• pp.99-106
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• 1996

Development of an automatic TIG welding system incorporating a vision sensor and torch control mechanism leads to an improved welding quality and greater production efficiency. The automatic welding system should be greatly restricted in its size and weight for the LNG(Liquefied Natural Gas) storage tank and also provide a unique torch rotating mechanism which keeps the torch tip in the constant position while the angle is changed continuously to maintain the welding torch substantially perpendicular to the weld line. The developed system is driven by two translation axes X, Z and one rotational axis. A moving line window method is adopted to the image recognition of the corrugated membranes with specular reflection. This method decides original laser stripe patterns in image which is affected by multi-reflection. A self-teaching algorithm, which guides the automatic welding machine with the information provided by the CCD camera without any previous learning of a reference trajectory, was developed for tracking the corrugated membrane of the LNG tank along the weld line.

• Journal of Elementary Mathematics Education in Korea
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• v.14 no.2
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• pp.197-215
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• 2010

Intuition plays an important role in the mathematical education as well as the process of invention in mathematics. And many mathematics educators became interested in intuition in mathematics education. So we need to analyze the effect of the characters of intuition of elementary students. In this study, the questionnaire and the interview were used. The subjects were 6 grade-103 students in the questionnaire. They were asked to solve the problems in the questionnaire which was designed by the researcher and to describe the reasons why they answered like that. Students are effected directly by the characters of intuition, ie self-evidence, intrinsic certainty, implicitness, etc. And the effect come from intuitive and ordinary experiences and the results of previous learning. In conclusion, we have to be interested in teaching via intuition and to control the effect of the characters of intuition.

• Research in Community and Public Health Nursing
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• v.25 no.4
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• pp.270-281
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• 2014

Purpose: The purpose of the study was to understand low-income elders' experiences of community-based u-Health services. Methods: Qualitative data were collected from 11 participants. All interviews were recorded and transcribed verbatim. The transcribed data were analyzed using qualitative content analysis. Results: Three themes and eight sub-themes emerged as a result of analysis. The three main themes were 'recovered confidence and health condition,' 'trial and error in change,' and 'hope.'The eight sub-themes were 'the burden and efforts to overcome it in using bio-signal device,' 'ambivalence due to changing lifestyle,' 'increase of care time, decrease of pressure', 'conflict under environmental constraints,' 'difficulty in prioritizing health management,' 'discouragement in handling new devices,' 'desire not to be a burden to their children-gradual fulfillment of learning needs,' and 'long for broadening coverage range of services.' Conclusion: The findings of this study demonstrate that low-income elders among the participants have different needs in using u-Health services. Therefore, health professionals need to give personalized education to deal with their conflicts and requirements, especially emotional and environmental support in order for them to successfully accept the u-Health services for self-care.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.5
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• pp.687-693
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• 2013

This study is the design and implementation of digital textbooks for elementary school computer education based on smart phone. It suggests how to cultivate self-directed learning ability depending on the level and selection of individuals by maximizing on interaction as advantage of digital textbooks. As the content of the digital textbooks, this study used Excel's charting capabilities. As a result of the evaluation of elementary learners having a implemented digital textbook, execution time of creating a chart is reduced in comparison with paper-based textbook user group.

• Journal of Korean Elementary Science Education
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• v.21 no.1
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• pp.25-41
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• 2002

The Korean National curriculum is divided into the curriculum, discretion, and extra curriculum activity. Extra curriculum among them consists of fie grounds, that is, a self-governing, adjusting, developing, service and exercise activity. The content of developing activity among them includes academic literary arts, in that the developing activity related to science. The developing activity connected with science can be a good chance which students can have deepened learning besides a regular course. In addition, effective management in science class can play an important role to cultivate scientific sense and to raise scientific talent. The study finds out how the management connected with science-related extra-curricula activity in science is actually going on. The study carries out a questionnaire with 40 teachers and interviews 5 teachers as well who are in charge of science-related extra-curricula activity connected with science. As a result, on the side of students, ① systematic introduction course in science is not given to them, ② the course is operating without considering students interests and levels, so it causes the problems of developing their potential ability and extension. On the side of teachers, ① they organize the science department based on school's situation and policy. ② they disregard teachers' roles and interests. ③ the science department's program is operating improvisedly rather than systematically, ④ the evaluation is done formally is found out. I have come to know that to manage a desirable science-related extra-curricula activity connected with science needs to have sufficient, detailed materials and experts from outside.

• Korean Institute of Interior Design Journal
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• v.15 no.5 s.58
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• pp.230-237
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• 2006

The purpose of this study was to propose a plan of Information Resource Center(IRC) with various multimedia and Internet materials applicable in class for 'K' Elementary School in Daejeon. As for research methods, this study reviewed the basic directions and characteristics of Information Resource Center(IRC) defined by the Ministry of Education and Human Development, and literature from various sources. Standards for the Information Resource Center(IRC) were suggested, a plan was proposed according to them. Ultimately, a plan with stable and flexible layout and flow lines, facilities and spaces within the Information Resource Center(IRC) was established and executed. The basic functions of Information Resource Center(IRC) were information, reading, consultation, graphic production. The spaces suggested in this study for the Information Resource Center(IRC) for elementary school were space for the literature information, information search, A/V information, studying, browsing, reading. This results will support teacher's teaching with various multimedia and Internet materials applicable in class, help student's self directed learning activity, and play its role as a cultural center of the local community.

• Korean Institute of Interior Design Journal
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• v.27 no.3
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• pp.62-70
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• 2018

The rapid development of information technology makes people's lifestyles constantly changing, bringing great changes to the library building. As a product of the development of public libraries, community libraries have an important impact on community cohesion and revitalization through providing targeted learning and leisure services to residents. Under the trend of social and community development, the community library's user-centered space must adapt to the diverse needs of community users and make the self-improvement. First of all, this study summarizes the concept of community and community libraries through literature review, and then make a theoretical investigation on the composition of user-centered space. Finally this study bases on the cases of community library buildings in the United States and Britain, and initially explores the composition of user-centered space in these libraries, and then analyzes and summarizes the architectural characteristics of it. Exploring how community can be activated and cohesive through community libraries user-centered space. Hope that this study can provide some reference to the contemporary community library design.

• Journal of Nutrition and Health
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• v.35 no.7
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• pp.791-799
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• 2002

The performance of educational program for preventive nutrition is more beneficial for children than for the adults based on the cost reduction and the effect of this education. Also children's education helps them to grow and to live as a healthy adult. The purpose of this study is to solve the nutritional problem in children by developing nutrition education program for children and correct their nutritional problems. The characteristics of this program (www.food79.net) are the customized program for grade level based on the level of learning ability, the various education method such as game, cooking practice, and quiz, animation, and the self educated method by managing children's meal management as the result. The contents of this site are constructed not only for children but also for parents, the teachers and the school dietitians to increasing educational effect. The children room consists of food tower, nutrition kingdom, calculation of obesity index, food information, nutrient exploration, cooking world, and evaluation of dietary life. In the room for dietitian and teachers include the contents of the easy gymnastics, nutrition counseling methods, the teaching plans for nutrition education, and the information interchange corner. The third room for parents is constructed of nutrition evaluation, food 114, correction of living habits, and free discussion. Through this site, we are expecting to contribute to national health promotion by correcting the food habits of children.