• The Mathematical Education
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• v.55 no.4
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• pp.397-416
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• 2016

This study analyzed the quality of mathematics classes with observations using the instrument, MQI(Mathematical Quality of Instruction). Class recordings and interviews were conducted on 2 pre-service teachers and 4 in-service teachers. This study recorded and analyzed 3 or 4 classes for each mathematics teacher by using revised MQI. There were a total of 8 raters: 2 or 3 raters analyzed each class. MQI has four dimensions: Richness of the Mathematics, Working with Students and Mathematic, Errors and Imprecision, Student Participation in Meaning-Making and Reasoning. In the dimension of 'Richness of Mathematics', all teachers had good scores of 'explanations of teacher' but had lower scores of 'linking and connections', 'multiple procedures or solution methods' and 'developing mathematical generalizations.' In the dimension of 'Working with Students and Mathematics', two in-service teachers who have worked and having more experience had higher scores than others. In the dimension of 'Errors and Imprecision', all teachers had high scores. In the dimension of 'Student Participation in Meaning-Making and Reasoning', two pre-service teachers had contrast and also two in-service teachers who hadn't worked not long had contrast. Implications were deducted from finding to improving quality of mathematics classes.

• Korean Journal of Human Ecology
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• v.18 no.2
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• pp.353-362
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• 2009

The study aims to investigate the children's adaptability to early school circumstances and their relationships to teachers and to peers. The examination was done on 110 children aged 4 or 5 at a kindergarten and two child care centers in Seoul. Their 'adaptability to early school' and their 'relationships to teachers and to peers' were rated by their teachers. On the whole, the children subjects are on good terms with their teachers and peers, and they adapt well to early schools. But according to age groups, there were significant differences in the teacher-to-child relationships. Compared to boys, girls show more' adaptability to the early schools', more 'closeness to teachers' and more 'prosociality in peer group'. The 'closeness to teachers' has a positive relation to the 'sociability', 'prosocial behaviors' and 'leadership of peer group', but the 'conflict with teachers' has a negative relation to the peer group relationships. And the' children's relationships with teachers and with peers' were significantly related to their early school adaptability. The 'prosociality', the 'closeness' and the' dependency' were significantly related to the' adaptability to early school' in order.

• Steel and Composite Structures
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• v.37 no.5
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• pp.571-587
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• 2020

In this article the seismic demand and performance of two recent braced steel frames named steel moment frames with the elliptic bracing (ELBRFs) are assessed through a laboratory program and numerical analyses of FEM. Here, one of the specimens is without connecting bracket from the corner of the frame to the elliptic brace (ELBRF-E), while the other is with the connecting brackets (ELBRF-B). In both the elliptic braced moment resisting frames (ELBRFs), in addition to not having any opening space problem in the bracing systems when installed in the surrounding frames, they improve structure's behavior. The experimental test is run on ½ scale single-story single-bay ELBRF specimens under cyclic quasi-static loading and compared with X-bracing and SMRF systems in one story base model. This system is of appropriate stiffness and a high ductility, with an increased response modification factor. Moreover, its energy dissipation is high. In the ELBRF bracing systems, there exists a great interval between relative deformation at the yield point and maximum relative deformation after entering the plastic region. In other words, the distance from the first plastic hinge to the collapse of the structure is fairly large. The experimental outcomes here, are in good agreement with the theoretical predictions.

• Journal of the Korean Society of School Health
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• v.25 no.1
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• pp.14-21
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• 2012

Purpose: This study was to investigate the attitudes of elementary school students on health curriculum. Methods: Based on the literary considerations and advanced research, a survey was conducted on Osgood's semantic differential scales on 329 fifth and sixth grade students in 6 elementary schools located in U metropolitan city regarding the attitudes towards health curriculum. Data were analyzed using t-test and multiple regression with the SPSS/WIN 18.0 program. Results: The overall attitude average grade was 3.46 in 26 factors, slightly exceeding the standard (3 points) which showed that students had a positive attitude towards health curriculums and thought health curriculums were valuable, necessary, and important classes. For each grade, the fifth grade believed health curriculums were more interesting, new, easy, necessary and valuable classes than compared to the sixth grade, and there were no differences between gender. The variables which affected attitudes in health curriculums included good feelings for health teacher, subject health status, and satisfaction in using the school health room. Conclusion: Because the better they think of health teacher, the higher the positive attitude towards health curriculums, a strategy which can build trust between student meetings not only during class time but also through operating a school health room will be necessary.

• Journal of the Korean Institute of Navigation
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• v.22 no.3
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• pp.73-92
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• 1998

Today the number of high school drop-outs is increasing , and also it is serious social problems. But almost factor analyses on the drop-outs are projected by questionnaire. This paper find out by the real data form the concerned documents what factors of drop-outs are. In order to accomplish this study purpose, the methodology are used such as Fequency Analysis, Correlation Analysis, Crosstabulation Analysis. Through the this study this paper could siome suggestions as followings. The first , all education authority should analysis what factors of drop-outs and what drop-out situation is . The second, every teacher should counsel with all problem students sincerely regarding to their characters, future occupations, life course and etc. The third, the most and worst important factors of drop-out is runaway. Because it is very difficult for teacher to teach, lead and guide a runaway student, therefore thepreventino of runaway is efficient for reducing of drop-outs. The fouth, the students violating rules are retrained propoerly in view of guide for good path. The fifth, besides of the above factors. there are drop-out factors such as the health, disease, dafety accidents . All parents. teachers, and students should try their best to solve. To the end, education authority try to encourage teachers to do their role with maximum sense of duty.

• Hwankyungkyoyuk
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• v.17 no.2
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• pp.1-9
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• 2004

In Korea environmental education has been taught as a separate subject in school since 1995. Still it has not established its own individuality. The environment subject teaches many areas that are also taught by the other subjects. Its text focuses on the knowledge of ecology and pollution although it tries to help students acquire a desirable attitude for environmental conservation and participate in environmental activities. To achieve the goals of environmental education in school, the environment subject and the other subjects should take differentiated parts in environmental education. For example, the latter teach knowledge and skill related to ecology and pollution and the former encourages students to behave responsibly to environment. One of the ways for it to do so is to let students discuss current environmental issues based on knowledge and skill and make their own decisions. The teacher who is charged with the subject has to help students, with their own will, decide to do good to environment and sustainable society, but should not make them to decide according to their teacher's will. We need to deeply discuss, with open mind, what the environment subject will teach and how it will cooperate with the other subjects to effectively achieve the goals of environmental education in school. Without such partitioning it is difficult that the environment subject keeps its own individuality and justifies its existence.

• Journal of Korean Elementary Science Education
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• v.31 no.1
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• pp.57-70
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• 2012

We investigated the perception and preferred type of question and analyzed type of questions asked by teachers in elementary science class to identify how teachers' perception of questioning is reflected in teaching practices. We collected the data from questionnaires, deep-interview and audiotaped four classes from grade 3 and six classes from grade 6. The data form deep-interview were analyzed interpretively and Blosser' framework of question was used to analyze questions which teachers used in classes. By interpretation of data from questionnaires, the teachers agreed that questioning affects science class in elementary school. There were a little differences in perceptions of questioning among three teachers. They preferred various types of question rather than a specific type. They didn't have a good understanding of questioning. The result showed that the teachers used frequently cognitive-memory question and convergent thinking question, which belonged to closed questions in their science classes. This didn't accord with their preferred types of question. The causes came from objectives of science instruction, degree of understanding about questioning, preference and confidence for science class. From this findings, we suggested that teachers should be given opportunities to take training courses in questioning in order to use effective questioning in science class.

• The Korean Journal of Health Service Management
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• v.6 no.4
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• pp.231-243
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• 2012

This study is aimed to improve future-oriented curriculum by investigating the satisfaction of students from beauty art-related departments on their curriculum and major courses and proposing their basic direction and improvement plan. For this, a survey was conducted against students from beauty art-related departments in Busan (5 junior colleges and 1 four-year university). The following results were obtained: First, according to a correlation analysis on major questionnaire items on the curriculum in beauty art-related departments, statistical significance was observed in 'curriculum development', 'facility and administrative & financial supports', 'instructor/teacher activities', 'educational evaluation activities', 'academia-industry cooperation activities' and 'output evaluation'. In terms of educational satisfaction, statistical significance was observed in all positive relations. Second, according to regression analysis on the evaluation of curriculum output factors in beauty art-related departments, output factor levels were high as 'academia-industry cooperation activities', 'age', 'teacher/instructor activities', curriculum requirement analysis' and 'curriculum development' were high. In overall, relatively good results (69.0%) were observed. A further study needs to be performed for improvement of satisfaction of students majoring in beauty art on their curriculum in educating students from beauty art-related departments by applying their educational evaluation to optimum standards.

• Journal of the Korean Chemical Society
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• v.36 no.4
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• pp.558-564
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• 1992

Product yields were determined for the reaction of styrene with sodium hypochlorite (NaOCl) in CH$_2$Cl$_2$ with various substituted manganese porphyrin complexes as catalysts. In the presence of the electron withdrawing group and ortho-substituted manganese porphyrin complexes, reaction rate and epoxide selectivity are increased. Also reaction rate and epoxide selectivity are largely increased by the presence of imidazole which behaves as axial ligand of the manganese porphyrin complexes. By the kinetic study with Michealis-Menten equation, the factor significantly affected to catalytic ability is $K_m$ value. A large binding affinity consists with the low $K_m$. With theoretical analysis by EHMO calculation, the results are in good agreement with experimental data.

• Journal of Science Education
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• v.43 no.1
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• pp.173-193
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• 2019

An expert teachers' instruction can be helpful to other teachers because good teaching effectively guides students to develop meaningful learning. Feynman is an excellent physics lecturer as well as one of the greatest physicists of the 20th century who presented and explained physics with his unique teaching style based on his great store of knowledge. However, it is not easy to capture and visualize teaching because it is not only the complex phenomena interrelated to various factors with the content to be taught but also the tacit representation. In this study, the framework of knowledge & belief based on the integrated mental model theory was used as a tool to capture and visualize complex and tacit representation of Feynman's teaching of 'The theory of gravitation,' a chapter in The Feynman Lectures on Physics. Feynman's teaching was found to go beyond the transmission of physics concepts by showing that components of the framework of knowledge & belief were effectively intertwined and integrated in his teaching and the storyline was well-organized. On the basis of these discussions, the implications of Feynman's teaching analyzed within the framework of knowledge & belief for physics teacher education are derived. Finally, the characteristics of the framework of knowledge & belief as tools for the analysis of teaching are presented.