• The Journal of Sustainable Design and Educational Environment Research
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• v.17 no.3
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• pp.26-34
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• 2018

This research is a pre-research to find out profit module of 20 students in a classroom. I researched the widths of passages in the 30 classrooms of 5 elementary schools in Nothern Kyeonggi-do. I found the conclusions as follows. 1st, the area of 1 student's unit is $650(W){\times}950(D)$ 2nd, most of classrooms' students table placements are one-way types(77%). U-types are 13%. group study-types are 7% 3rd, The width between blackboard and front student's table is 2.08m. The width of passage between back seat and backboard is 1.12m. The width of passage between side wall and near student's table is 0.89m. The width of passage between window and near student's table is 0.74m. The width of vertical passage(A) between student's tables is 0.68m. The width of vertical passage(B) between student's tables is 0.7m. 4th, The area of teachers' is $2.1m{\sim}2.25m{\times}2.1m=4.41{\sim}4.73m^2$

• Journal of Digital Convergence
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• v.19 no.5
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• pp.423-432
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• 2021

The purpose of this study is to investigate the effect of role recognition of students participating in middle school soccer club activities applying sports education model on responsibility and self-directed learning. In order to achieve this purpose, 410 samples were selected from male students based in Busan using the convenience sampling method. Among them, and 370 data were finally verified through frequency analysis, exploratory factor analysis, Cronbach's α coefficient calculation, and correlation analysis using the SPS statistics 25.0 program. Finally, a regression analysis was performed for hypothesis testing, and the results were as follows. First, the awareness of the role of the student participating in middle school soccer club activities, which applied the sports education model, was found to have a positive effect in part on the sense of responsibility. Second, the role recognition of students participating in middle school soccer club activities, which applied the sports education model, was found to have a partial positive influence on self-directed learning. Finally, the responsibility of students participating in middle school soccer club activities, which applied the sports education model, was found to have a positive effect on self-directed learning in part. Therefore, physical education teachers should ensure that students can choose the right roles for themselves through various role experiences in soccer classes so that more active learning can take place.

• The Mathematical Education
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• v.61 no.3
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• pp.419-439
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• 2022

This study is based on Freudenthal's mathmatising process and the didactical phenomenology of linear function concept, I have described and examined the process in which students represent the constant rate of change into tables, graphs and equations and, in this way, how they construct mental objects and essence of the linear function concept. The students used the proportionality as composite units, when they represented the phenomenon with constant rate of change into tables. When representing in graphs, all but one student represented it into a line. There were differences among the students in the level they were using the given conditions, co-variation perspective, and corresponding rules when formulating equations. The students compared the relationship between two variables in a multiplicative way, and under the guidance of teachers they reached to the understanding that its relationship becomes a constant. Moreover, they could construct mental objects of a constant rate of change, understanding the situation where the relationship between time difference and distance difference becomes one value, namely speed. The students had difficulties in connecting the rate of change with the inclination of a line. The students constructed the essence (concept) of linear functions, after building and organizing the image that the rate of change is constant, the graph is linear, and the equation is formulated as y=ax+b (a: inclination, b: intercept).

• Journal of Gifted/Talented Education
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• v.23 no.1
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• pp.109-128
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• 2013

The purpose of this study is to verify the validity of KEDI Leadership Inventory (Simplified) for elementary and secondary school student. The existing Leadership Inventory is outdated by excessive or insufficient items. To verify reliability and validity of this KEDI Leadership Inventory (Simplified), we analyze internal consistency of scale for reliability and construct validity, convergent and discriminative validity. criterion-related validity. The internal consistency of the scale is relatively high from .610 to .838 for elementary school student, and from .734 to .936 for secondary school student To verify construct validity, we analyze a confirmatory factor analysis using AMOS whether revealed that the structural equation model including 5 construct validity in KEDI Leadership Inventory(Simplified) showed fit index at a satisfactory level as follows. The major fit indexes are showed as follows; CFI (.954), TLI (.943), RMSEA (.068) in the scale for elementary school student, CFI (.935), TLI (.915), RMSEA (.070) in the scale for secondary school student. Futhermore, to secure criterion-related validity, this KEDI Leadership Inventory(Simplified) showed significant correlations with student's leader position in their classroom for r=.358 (p<.01), and gifted education students are significantly higher .50 than no gifted student. This KEDI Leadership Inventory (Sim'plified) is made up of parsimonious 20 items, so that teachers can be convenient to identify intra-inter personal leadership characteristics of a student and recommend the student for gifted education institution.

• Journal of the Korean earth science society
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• v.29 no.2
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• pp.163-174
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• 2008

In this study, we compared textbook knowledge organization with students' mental models to contribute to a more well-designed instruction scheme. The selected science content was the cause of moon phases. We investigated 9 textbooks and 25 third-year middle school students. Patterns and features in participants' mental models were identified through cross inter-rater data analysis by 9 researchers, including in service teachers and experts in science education. According to the results, observing and modeling are the main activities engaged in when dealing with moon phases. The activities consisted of such concepts as: lunar revolution, the sun's parallel rays, the illuminated half of moon, and the relative positions of the sun, moon, and earth. Each concept involved inquiry skills such as: creating and manipulating models, utilizing the relationship between time and space, and communicating. However, the most important skills which are required for authentic scientific inquiry, namely controlling variables and formulating hypotheses, were missing. We categorized students' mental models into three types: scientific models, mixed models, and alternative models. The knowledge structure of each of the models was also discussed in this paper. Consequently, it was found that, typically, students were not given enough opportunities to strengthen the connection among ideas.

• Journal of The Korean Association of Information Education
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• v.10 no.1
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• pp.107-115
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• 2006

As the use of computers and the Internet become more commonplace, many children are using the Internet. The Internet is rapidly permeating into the daily lives of elementary school students. There are some positive effects of using the Internet: it helps children's studies and communication skills and relives stress. However, some negative effects are arising, such as aggressive behavior caused by Internet games, sleeping disorders, and Internet addiction. The goal of this disquisition was to find out how an upper class of elementary school children are using the Internet and also the degree of their Internet addictions. The effects that Internet addiction had on various aspects, such as on the individual, family, and school were observed. In the individual aspect, self-respect, self-control, awareness of stress, depression, and personal taste were observed. In the aspect of family, communication with parents, the nursing behavior of parents, family functions, friendliness within the family, and the family's emotional support were observed. In the aspect of school, relationships with teachers, relationships with friends, study activities, compliance to rules and participation in events were observed. By analyzing each cause of Internet addiction, this disquisition hopes to help prevent Internet addiction and to support educational guiding about Internet addiction of elementary school children.

• Proceedings of the KAIS Fall Conference
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• 2010.05b
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• pp.1209-1212
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• 2010

본 연구는 제주지역 일부 초, 중학생들의 간접흡연 실태와 그로 인한 현재 흡연 여부 관계를 분석하여 초, 중학생들의 흡연 예방 교육 계획 및 수립에 기초 자료를 제공하고자 본 연구를 시도하였다. 자료 수집 기간은 2009년 6월 29일부터 7월 11일까지 제주특별자치도내 초등학교 5, 6학년 아동 464명과 중학생 475명을 대상으로 설문지를 이용하여 조사하였다. 연구 대상자들의 간접흡연 노출 관련성은 가정불화, 성적, 친구관계스트레스가 있는 대상자에게서 높게 조사되었고, 가족 및 주변인의 흡연유무에 따른 간접흡연 실태는 부모 및 친구의 흡연으로 간접흡연에 노출되었으며 통계적으로 유의한 차이를 보였다. 간접흡연의 주제공자는 아버지며, 주 간접흡연 피해 장소는 집으로 나타났다. 간접흡연 노출 유무를 종속변수로 한 로지스틱 회귀분석 결과는 흡연하는 아버지를 둔 대상자가 그렇지 않은 대상자에 비해 간접흡연 노출이 높았으며, 흡연하는 친구를 둔 대상자는 그렇지 않은 대상자에 비해 간접흡연 노출이 높게 나타났다. 현재흡연 여부를 종속변수로 한 로지스틱 회귀분석의 결과는 남학생이 여학생에 비해, 중학생이 초등학생에 비해 현재흡연율이 높았고, 엄한 가정 분위기 속에서 생활하고 있는 대상자와 흡연하는 친구를 둔 대상자는 그렇지 않은 대상자에 비해 현재흡연율이 높았으며, 간접흡연에 노출 되었던 대상자에게서 현재흡연율이 높게 나타났다. 이상의 결과를 종합하여 볼 때 초, 중학생의 간접흡연 실태는 심각한 사회문제이다. 또한 대상자들의 현재 흡연은 간접흡연 노출과 관련이 있는 것으로 볼 수 있었다. 이러한 간접흡연의 노출 및 그로 인한 흡연율을 줄이기 위해서는 가정 및 학교와 공공장소 등에서 간접흡연에 노출되지 않는 제도적 및 환경적인 조치들이 우선되어야 할 것이며, 학생들을 대상으로 간접흡연에 대한 간접흡연 예방 교육 및 대처방안 교육이 조기에 지속적으로 실시되어야 하겠다. 또한 유치원에서부터 고등학교에 이르기까지 모든 학생들에게 필수적으로 흡연예방 교육을 수강하게 하고, 교사들을 위한 연수교육 실시, 학교 흡연예방사업에 부모나 가족을 참여, 흡연예방 사업의 정기적인 평가 실시 등 국가적인 정책이 동반되어야 할 것이다.

• Journal of Korean Home Economics Education Association
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• v.25 no.2
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• pp.103-128
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• 2013

The purpose of this study was to develop a school violence prevention program featuring the Practical Action Teaching Model(hereafter, PATM) for middle school students to prevent school violence by Home Economics Education. To accomplish this purpose, the processes of analysis, design, development, and evaluation based on ADDIE were conducted. The validity of the program was evaluated twice by Home Economics education experts(36 experts for the first group and 10 experts for the second group) and the contents of the program were modified according to the comments from the evaluators. The school violence prevention program in Home Economics classes consisted of 5 topics such as changing perception on school violence, enhancing self-esteem, relating with others, practicing consideration and sharing, and strengthening the will of preventing school violence. Twenty-four units were developed with 7 practical problems(What should I do to make friends to help with each other?, What should I do to establish positive self-concept?, What should I do to communicate to build good relationship?, What should I do to solve the conflicts peacefully?, What should I do to practice consideration and sharing in food consumption?, and What should I do to practice consideration and sharing in clothing?) in 5 topic areas. Teaching-learning plans included four steps such as problem perception, practical reasoning, action, and evaluation that comprise PATM to solve the practical problems. Every step of the teaching-learning plan consisted of questions for practical reasoning and activity assignments. Materials for students and teachers were developed. Materials for students comprised 80 pieces in total including student activity, reading, movie, and clips to make students enhance understanding and interest. Materials for teachers comprised 35 pieces in total such as rationales, newspaper articles, and movies that make teachers that lesson teaching loads and were helpful for teachers. The PATM was incorporated into developing the program and a Likert-scale was used to assess usefulness, applicability, appropriateness, fidelity, substantiality, and validity of this program. This program gained more than 4.00 on a 1-5 Likert scale. This result indicated that program is expected to be effective and useful to school violence prevention.

• Journal of the Korean School Mathematics Society
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• v.15 no.3
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• pp.395-410
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• 2012

When planning lessons and developing materials about mathematical teaching and learning, we should condignly change and reconstruct contents and orders in light of ranks and connections between subject materials. Moreover teachers should teach mathematical concepts so that students might understand then not only independently and disjunctively but also relationally and reflectively. For this, teachers have to prepare thoroughly. By analyzing advanced research for mathematical connections, this study categorizes them according to two conditions: internal-external and content-formality. Through this, tactical aspect similarity and indistinguishability between mathematical external connections and mathematical internal connections have been identified. Based upon this fact, this study proposed the principles and the examples of tactical aspect on mathematical Internal Connetions.

• Proceedings of the KAIS Fall Conference
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• 2010.11b
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• pp.700-703
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• 2010

통합학문을 구성해야 한다는 시대적 요구가 점차 많아지고 있다. 이러한 요구는 둘 이상의 학문이 융합하여 시너지의 효과를 발생하거나 창의적인 문제해결 혹은 그 이상의 새로운 결과물을 창출하는 목적을 가지고 있다. 이는 궁극적으로 합침을 통하여 전혀 다른 새로운 것을 지향하는 통섭을 목적으로 하고 있다고 볼 수 있다. 교수 학습은 교수자와 학습자의 커뮤니케이션 과정이며 교사와 학생간의 원활한 커뮤니케이션이 이루어지지 않고는 교육의 본질적 목표를 달성하기 어렵다. 교수 학습의 연결은 커뮤니케이션이며, 이를 효율적으로 실행 가능하게 해 주는 것이 매체라 할 수 있다. 교수자와 학습자의 관계를 이어주는 커뮤니케이션, 매체와 인간이 하나로 통섭되는 매체의 인간화, 매체를 통한 커뮤니케이션의 확장을 통하여 사용자와 매체, 사용자와 사용자, 매체와 매체의 상호작용이 이루어지게 된다. 본 연구에서는 이러한 측면에서 인간 매체 간 통섭적 커뮤니케이션에 근거한 유러닝을 전망해 봄으로써 학습자 중심의 교육을 실현하는 관점을 제시하고자 한다.