• Journal of the Korean School Mathematics Society
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• 제20권4호
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• pp.369-385
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• 2017

This study is to figure out the activity and disposition of gifted students with face plot in exploratory data analysis at middle school mathematics class. This study has begun on the basis of the doing mathematics at multivariate analysis beyond one variable and two variables. Gifted students were developed the good learning habits theirselves. According to this result, Many gifted students have an interesting experience at data analysis with Face Plot. And they felt the useful methods of creative thinking about graphics with doing mathematics at mathematical tasks. I think that teachers need to learn the visualization methods and to make and to develop the STEAM education tasks connected real life. It should be effective enough to change their attitudes toward teaching and learning at exploratory data analysis.

• The Korean Journal of Community Living Science
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• 제18권3호
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• pp.469-480
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• 2007

The purpose of this study is to find out the effect of nutrition education on dietaty behavior, nutrition knowledge and weight control of middle school students. The study is based on the assumption that students' dietary behavior, nutrition knowledge and weight-control are considerably influenced by whether they get nutrition education or not. A total of 495 students aged between $14{\sim}16$ (249 boys and 246 girls) were surveyed one middle school located Siheungsi, Gyeonggido. The survey reveals that 55.4% of the boy students and 63.0% of the girl students have been provided nutrition education in curriculum related to nutrition, for instance home economics, technology class, and/or some other classes. The results showed that the students who have been provided nutrition education don't skip breakfast and have three meals regularly(p<0.05). The score of dietary behavior is based on Mini-Dietary Assessment. The average score of the students who have been provided nutrition education is higher than the students who have never been provided nutrition education(p<0.01), meaning the nutrition education are affected positively on dietary behavior. The average score of students' knowledge of nutrition is as follows. The average score of the students who have been provided nutrition education is 5.0/10, while the average score of the students who have never been provided nutrition education is 3.9/10. The gap of the average score does come up to an inevitable conclusion that the students who have been provided nutrition education are supposed to get higher score than those who have never been provided nutrition education(p<0.0001). And the students who have been provided nutrition education are more satisfied with their body shape than those who have never been provided nutrition education(p<0.05).

• Korean Journal of Social Welfare
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• 제68권1호
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• pp.23-52
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• 2016

This study aims to reveal the meaning and essence of male immigrant workers' life who underwent industrial accidents through specific experiences. This study is based on the Van Manen(1990)'s lived experience phenomenological method, which actively describes the experiences about the industrial accidents in the perspective of male immigrant worker. The in-depth interviews were carried out with the thirteen male immigrant workers participants who underwent the industrial accidents. Through the interview, 121 meaning units and 38 disclosed themes were constructed. The following is the summarized results as 9 essential themes: < the oppression of the Industrial accident compensation insurance's hospitals to the aliens >, < being treated like the surplus man who lost the labor force >, < the class rank below despite undergoing the industrial accidents >, < survival having resistance sentiments >, < living at the anonymous lands as the Homo sacer >, < the stratified strategies between the immigrant workers >, < the origins as the bodiless shadow >, < struggling to escape the present conditions >, < present circumstances tied by the past experiences without hope >, researcher sought the essential meaning structure about the four Life-world Existentials (Body, The other, Space and Time) of constructing human's live-world. Based on the study results, some suggestions were made to restore the male immigrant workers' damaged quality of their lives who experienced industrial accidents and to contribute the social integration in view of the social welfare.

• Journal of The Korean Association For Science Education
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• 제38권4호
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• pp.467-480
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• 2018

This study aims to investigate how flipped learning-based socioscientific issue instruction (FL-SSI instruction) affected middle school students' key competencies and character development. Traditional classrooms are constrained in terms of time and resources for exploring the issues and making decision on SSI. To address these concerns, we designed and implemented an SSI instruction adopting flipped learning. Seventy-three 8th graders participated in an SSI program on four topics for over 12 class periods. Two questionnaires were used as a main data source to measure students' key competencies and character development before and after the SSI instruction. In addition, student responses and shared experience from focus group interviews after the instruction were collected and analyzed. The results indicate that the students significantly improved their key competencies and experienced character development after the SSI instruction. The students presented statistically significant improvement in the key competencies (i.e., collaboration, information and technology, critical thinking and problem-solving, and communication skills) and in two out of three factors in character and values as global citizens (social and moral compassion, and socio-scientific accountability). Interview data supports the quantitative results indicating that SSI instruction with a flipped learning strategy provided students in-depth and rich learning opportunities. The students responded that watching web-based videos prior to class enabled them to deeply understand the issue and actively engage in discussion and debate once class began. Furthermore, the resulting gains in available class time deriving from a flipped learning approach allowed the students to examine the issue from diverse perspectives.

• Journal of Chest Surgery
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• 제18권4호
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• pp.679-691
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• 1985

Ninety patients underwent mitral valvular heart surgery associated with or without aortic valve surgery and subjected to a clinical study in relation to their control of postoperative atrial fibrillation. There were 26 males and 64 females ranged in age from 16 to 56 years with a mean of 35.2 years. Systemic arterial embolizations were observed in 11 patients [12.2%]. Four patients of them were in normal sinus rhythm and 7 in atrial fibrillation. Out of these, left atrial thrombi were found only in 2 at the operation. Intraoperatively confirmed left atrial thrombi were in 16 patients [17.7%] of all 90 patients: Eleven patients occurred at the age of more than 40 years, 14 were in atrial fibrillation and 2 only had previous episodes of systemic arterial embolization. Sixty three patients underwent isolated mitral valve surgery [OMC 28, MVR 35] and 27 patients associated with aortic valve surgery along with mitral valve [OMC+AVR 13, MVR+AVR 14]. Preoperatively, 44 patients [48.9%] were in normal sinus rhythm. Of them, 35 patients [79.5%] revealed normal sinus rhythm thoroughly after operation without any aid of digitalis or quinidine and 5 patients [11.4%] restored normal sinus rhythm with digitalization alone. Other 3 patients converted to normal sinus rhythm with the addition of quinidine, however, in 1 patient who was resistant to quinidine therapy, electrocardioversion was carried out on the postoperative third week showing normal sinus rhythm. Thus, the most atrial fibrillations that occurred for the first time in the postoperative period, were able to reverted to normal sinus rhythm responding well to antiarrhythmic therapy. Preoperatively, 46 patients [51.1%] were in atrial fibrillation. Of them, only 5 patients returned to sinus rhythm after operation without any aid of digitalis or quinidine and other 5 restored normal sinus rhythm with digitalization: namely 2 restored within early postoperative period and 3 after more than 3 months. Eight patients well responded to quinidine therapy showing normal Sinus rhythm. So far, 25 patients have remained in persistent atrial fibrillation on 6 to 36 months follow-up. In view of these, 17 patients [68%] were over 40 years of age, 22[80%] had long duration of symptom over 5 years and 10[40%] have had atrial thrombi before operation. Left atrial dimension were still more than 40mm in 21 patients on follow up M-mode echocardiogram. One month after operation, 87 hospital survivors were improved by at least one functional NYHA class. There were 3 operative deaths [3.3%, bleeding 1, LCOS 2] and 4 late deaths [LCOS 1, valve thrombosis 1, late bleeding 1, fulminant hepatitis 1] during follow-up period. According to our limited experience, we may conclude that better results will be expected with the addition of quinidine therapy judiciously in the cases of postoperative persistent atrial fibrillation who were aged or had longer history of symptom and left atrial thrombi.

• Journal of the Korean earth science society
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• 제36권3호
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• pp.246-257
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• 2015

The purpose of this study was to develop and apply three types SMART instructional modules about the mineral resources and investigate its effect. One hundred students in the experimental group and 111 students in the control group from 6 classes in the $1^{st}$ year of a girl's high school participated in this study. One unit of tablet PC was provided to every two students in the experimental group and three types of SMART classes were implemented in class. Teacher-centered traditional classes were carried out for the control group. The instrument designed to assess the level of students' interest in mineral resources consisted of 10 items using 5-point Likert scale. To investigate the level of students' understanding, 15 items were developed on the mineral, mineral deposits, and the development of mineral resources. In addition, the participants were asked to describe advantages and disadvantages of the classes using the SMART modules. Results are as follows. First, participants in the experimental group showed a significantly higher level of interest on the mineral and the mineral learning than those in the control group. However, there was no significant difference between the two groups in terms of the desire to observe minerals and rocks. Second, students in the experimental group showed a higher level of understanding than the control group. The students with higher learning ability showed a significantly higher level of understanding than the lower group students. Third, the participants pointed out that the advantage of the SMART instructional modules was their experience in searching the relevant information and producing diverse outputs about mineral resource. On the contrary, the difficulties in coordinating opinions and decision making due to the excessive quantity of information were perceived as the disadvantage.

• Journal of The Korean Association For Science Education
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• 제37권3호
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• pp.453-464
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• 2017

The purposes of the study are to investigate the experiences of major stakeholders (i.e. science teachers, program instructors, local experts, etc.) who participated in implementing Community-Based Socioscientific Issues Programs (SSI-COMM) and to provide educational implications for further implementation. SSI-COMM dealt with three issues (i.e. abandoned pets, fine dust, and recycling) that students often encountered in their local community. Each program, lasting over 16 class periods in a free semester, included in-school and out-of-school activities in order to promote their interest and participation in community. Four teachers, four program instructors, and six local experts joined the interviews to explain their experience of participating in the programs. As a result, school teachers, program instructors, and local experts positively appreciated their experiences of the program implementation and perceived educational potentials of SSI-COMM. All the stakeholders mentioned that they became more interested in local socioscientific issues and strongly perceived the need for the implementation of such programs linked to their own community. The science teachers appreciated the opportunities to identify students' potentials through SSI-COMM and believed that SSI-COMM would contribute to reducing the gap between learning and practice. The program instructors, observed that out-of-school activities contributed to enhancing students' self-confidence and fulfillment in learning. Finally, the local experts obtained a sense of belonging to their community and were very satisfied with their contribution. The SSI-COMM programs are expected to be one of the educational models that will help to encourage the participation of students and stakeholders in facilitating educational activities in relation to the community.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제13권11호
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• pp.5091-5097
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• 2012

The purpose of this study is to figure out the effects of nature-friendly environmental education program on environmental pollution prevention and practice attitude of children. To achieve this, a survey was experimentally carried out on total 43 five-year old class children in Chungcheong Province-based preschools. They were classified into the experimental group made up of 12 male children and 10 female children, and the control group made up of 12 male children and 9 female children. The results of this study are as follows. First, there was no statistically significant difference in environmental pollution prevention and practice attitude between the control group. And there was an increase of general environmental pollution prevention and practice attitude in the experimental group, showing a statistically significant difference. Second, there was a decrease and an increase of the 'concern about nature', 'aesthetical experience' and 'emotional stability' by each sub-factor of environmental pollution prevention and practice attitude in the control group and the experimental group, respectively, showing a significant effect. And there was an increase of 'activities to prevent environmental pollution' and 'practice attitude' in both control group and the experimental group, showing a significant effect. As stated above, the nature-friendly environmental education program for children had positive effects on the environmental pollution prevention and practical attitude improvement. Consequently, it is proven that this program is useful for improving the environmental pollution prevention and practice attitude of children through education for repetitive life attitude of natural preciousness from early childhood.

• Journal of Korean Home Economics Education Association
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• 제22권3호
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• pp.147-162
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• 2010

The purpose of this study is to seek out efficient multicultural education plans by investigating Home Economics teachers' perception of multicultural families and multicultural education. Thus, a survey was carried out to collect data mainly from home economics teachers who is working for middle schools. The results of this study can be summarized as follows. Firstly, there were more teachers who had some experience of contacting with multicultural families than those who didn't have, but it was not a big difference. Also, it was found that there were not many teachers who took multicultural education-related classes for their studying at college or had multicultural education-related teachers' training for their working as a teacher. Secondly, it was found that their respect for multi-races, recognition of multi-cultures, belief in multi-cultures and acceptance attitude toward multicultural knowledge were very positive. Thirdly, it was found that most teachers had consideration -centered viewpoints most of all. On the other hand, assimilation-based viewpoints were the least among teachers. Fourthly, teachers believe that multicultural society centered contents, which is a society where people get along with each other, should be dealt in class while executing education for multicultural families. Lastly, in regard to methods of executing education for multicultural families, it was found that they showed the strongest opinion that it should be executed all over the domain of every school subject as integrated education.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제18권7호
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• pp.618-626
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• 2017

This study was conducted to investigate the factors affecting depression in elementary school teachers. The research design was a descriptive study. Methods:Data were collected by questionnaires from 283 elementary school teachers. Data were analyzed using a t-test, ANOVA, a $Scheff{\acute{e}}$ test, correlation analysis, and multiple regression analysis. Results: The mean scores were 2.44, 3.07 and 3.68 out of 5 on Likert scales for burnout, job stress and ego-resiliency, respectively. The mean scores were 1.47 and 2.95 out of 4 on Likert scales for items of depression and job satisfaction, respectively. Teaching experience and class size affected depression significantly. There was a positive correlation between depression and burnout(r=0.465, p<.001), and between depression and job stress(r =.220, p<.001),while a negative correlation was observed between depression and job satisfaction(r=-.249, p<.001), and depression and ego-resiliency(r=-.643, p<.001). Multiple regression analysis showed that ego-resiliency(${\beta}=0.639$), job satisfaction(${\beta}=.141$), burnout(${\beta}=.094$), and job stress(${\beta}=.067$) affected depression in order and the four research variables led to a 42.7% prediction for depression among elementary school teachers. Conclusion: Based on the results of this study, a systematic plan for decreasing job stress and increasing eco-resilience is needed to improve depression among elementary school teachers.