• Journal of The Korean Association For Science Education
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• v.32 no.10
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• pp.1551-1566
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• 2012

In this study, the effects of grouping by students' collectivism in cooperative learning strategy applied to middle school science classes on their academic achievement, science learning motivation, and perceptions of science learning environment were investigated. Students' perceptions of cooperative learning were also studied through survey and interview. The students were assigned to the control, heterogeneous, and homogeneous groups, and taught for 12 class hours. The analyses of results revealed that interactive effects between the instruction and the level of collectivism were found in the test scores of achievement, science learning motivation, and relevance, and that there were main effects in the test scores of confidence, perceptions of science learning environment, affiliation, and rule clarity. The achievement test scores of the students with low collectivism in the homogeneous group were significantly higher than those in the heterogeneous group. The test scores on science learning motivation and relevance of the students with high collectivism in the homogeneous and heterogeneous groups were significantly higher than those in the control group. In addition, the test scores of confidence and affiliation in the treatment groups were significantly higher than those in the control group. The test scores on perceptions of science learning environment and rule clarity in the homogeneous groups were significantly higher than those in the control group. There were also differences in the perceptions of science cooperative learning by students' collectivism.

• Journal of Korean society of Dental Hygiene
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• v.6 no.4
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• pp.387-402
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• 2006

This research carried out a survey for 569 students in a junior college of jeollanamdo to provide a needful basic data in developing suitable health promotion program and creating a direction of the oral hygiene education process to intial adult population after holding the oral cavity health action and a affecting factors to it. A collected data obtained the following conclusion. According to school grade, a difference of action factor is Chi-square and Pearson's correlation coeficient in actionfactor and acknowledgement-perception factor and a step-by-step recurrence analysis processed a related factor of the oral health action. 1. A related action factor of the oral health appeared meaningful difference of the oral cavity medical examination, the oral cavity clean device use or not, dental surgery prevention cure or not among the third grade who had the most experience of the oral hygiene education within one year recently. 2. A significant of the oral cavity health acknowledged and perceived and a concern of the oral cavity health, acknowledged the oral cavity health state distribution are the highest in the third grade. 3. According to monthly income, a large income is higher than a small income about self-effects in a relation between the oral cavity health action and acknowledgement-perception factor. the average of a large income is 30.59(${\pm}5.79$). The obstacle of the oral cavity health action is 12.51(${\pm}3.19$). a large income is highest. according to school career, under middle school layer obtained the highest average 16.33(${\pm}3.53$). according to a school year, acknowledge-perception factor of the oral cavity health control of the third grade is the highest(38.81(${\pm}6.25$). 4. In mutual relation between acknowledge-perception factor and the oral cavity health action, a variable constants of meaningful mutual relation are the oral cavity health perception, self-effects, the oral cavity health action obstacle, the oral cavity health action benefit, the oral health action control, aggressive. and they are self-effects, the oral cavity health action in the oral cavity health perception. A significant of the oral cavity health and the oral cavity health action obstacle are the oral cavity health action benefit and the oral cavity health action control. 5. The affecting factors to the oral health action are self-effects, action factor, acknowledged the oral health control.

• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.6
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• pp.796-806
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• 2012

This study was conducted to investigate dietary attitude, and nutritional knowledge of middle school students in Gwangju and examine their perception and utilization of food labeling systems. The total and mean dietary attitude scores were 75 and 49.47, respectively. The total and mean nutrition knowledge scores were 15 and 10.88, respectively. Girls showed significantly higher nutrition knowledge than boys (p<0.01). Overall, 62.9% of respondents checked food labeling, and there were significant differences in dietary attitudes among groups that did and did not checking labeling (p<0.001), with higher dietary attitude being associated with checking the label. Moreover, higher nutritional knowledge was associated with checking the food label. Individuals who checked the food label considered the expiration date (54.9%), product name (14.4%) and price (10.2%). The main reasons for checking food labeling were (in descending order) to confirm the expiration date (61.6%), determine the ingredients and nutritional information, learn how to store the product, and compare the price and weight with other products. The overall satisfaction with the food labeling system was 16.20 out of 30, and significant differences (p<0.001) were observed among individuals with high, moderate and low dietary attitudes, as indicated by satisfaction scores of 17.54, 16.32 and 14.86, respectively. Individuals with high, moderate and low dietary attitudes had nutritional knowledge scores of 15.79, 16.08, and 17.08 respectively. The overall score for understanding nutrition labeling was 4.71 out of 7, and the understanding differed significantly among groups (p<0.01), with those with moderate food attitudes having the highest score.

• Korean Journal of Child Studies
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• v.34 no.5
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• pp.127-144
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• 2013

The purpose of this study was (1) to examine the impact of chronic diseases on adolescent's peer relationships, and (2) to investigate the mediating effect of self-perceived health status and resilience on the relationship between their physical health states and peer relationships. The authors used the first-wave panel data from 'the Korean Children-Youth Panel Survey'. The sample included 2,351 first-grade of middle school students(boys 50.1%, girls 49.9%). Among the subjects examined 48.11% had chronic diseases. Using maximum likelihood estimation with Amos18(Arbuckle, 2009), SEM software, structural equation modeling was tested. The major findings were as follows : 1. Adolescents' chronic diseases had a negative impact on peer relationships. 2. Self-perceived health status and resilience had a mediating effect. This suggests that self-perceived health status and resilience could be protective factors when it comes to perceive peer relationships more positively for adolescents with chronic diseases. 3. Resilience was directly affected by self-perceived health status. This indicates that positive self-perception about their health status encourages adolescents with chronic diseases to be more resilient and to more positively affect their perception of their relationships with peers.

• Journal of Families and Better Life
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• v.28 no.5
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• pp.39-51
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• 2010

The purpose of this study was to investigate the moderating effect of adolescent's perception of interparental conflict and parental acceptance on psychological adjustments(self-esteem, depressive mood). Data were collected using self-administered questionnaire method with 554 middle and high school students. The major results of this research were as follows. First, there were significant differences in interparental conflicts, parental acceptance and psychological adjustments according to adolescents' sex and perceived level of living standard. Second, interparental conflict was negatively correlated with parental acceptance and self-esteem, and were positively related to depressive mood. Parental acceptance was positively related to self-esteem, and was negatively associated with depressive mood. Third, results of multiple regression analyis showed that both indices of psychological adjustments(self-esteem and depressive mood) were influenced by sex, perceived level of living standard, and parental acceptance. Specifically, the most powerful variable affecting psychological adjustments was parental acceptance. Finally, the parental acceptance moderated the influence of interparental.

• Journal of Korean Elementary Science Education
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• v.35 no.4
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• pp.426-441
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• 2016

The purpose of this study was getting the information for successful application to the national curriculum and students' core competencies enhancement, through investigation about competencies discussed in 2015 revised national curriculum development process and analysis about perception of 150 elementary school teachers in study. The results were as follows : Communication skill is considered to be the most important. Thinking ability what has been important traditionally is the middle of the rankings. Elementary school teachers think that a competency is specific to a subject. From this point of view, Creative/Scientific Problem-Solving Ability is the most important in science. They think that the enhancing of the ability of inquiry performance is highlighted in current science class. On elementary school teachers' awareness, inquiry model is the most effective in enhancing of scientific thinking and the ability of inquiry performance. And STS instruction model is in the other. PBL learning model and experimental inquiry model is the most effective in enhancing a competency has the highest feasibility like scientific thinking or the ability of inquiry performance.

• Journal of Families and Better Life
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• v.20 no.2
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• pp.161-174
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• 2002

The purpose of this study was to investigate institutionalized adolescents'perception of meaningful persons and to analyze the features of their interpersonal relationships. 9 middle school students of 3 child welfare facilities were observed and participated in depth-interviews. Results indicate that there is a difference in adolescents'family image according to their experience before institutionalization. They want care-givers of institution to offer more emotional support to them. And they perceive much social support from other adolescents who're living with them. But, the findings suggest that their peer relationships have some limitations because of institutionalization itself and various restriction on their behaviors. Lastly, they want more intimate relationship with supporters in addition to financial sponsorship. In conclusion, institutionalized adolescents'interpersonal relationships are related closely to the environmental properties. Therefore, concerns should be directed toward improving the quality of social and psychological environment of institutions. And various programs should be provided to support institutionalized adolescents'social development.

• Journal of the Korean Home Economics Association
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• v.39 no.12
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• pp.129-140
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• 2001

The effects of material monitoring and information sources of maternal knowledge on externalizing and internalizing behaviors of adolescents were examined with a sample of 323 ninth-grade middle school students(163 boys and 160 girls) and their mothers. Data were collected using questionnaires regarding maternal monitoring, information sources of maternal knowledge, and externalizing and internalizing behaviors of adolescents. The major findings were that 1) unemployed mothers showed more monitoring than employed mothers; 2) mothers perceived that girls showed more self-disclosure and were more controlled by them than boys; 3) girls showed more internalizing behavior than boys; 4) the more adolescents were monitored by their mothers, the less internalizing behavior they showed; 5) the more maternal solicitation was used, the more externalizing behavior girls showed; 6) adolescents showed the least externalizing behavior when maternal monitoring was highly perceived by both mothers and adolescents. And perception of maternal monitoring by adolescents themselves plays an important role in showing less externalizing behavior.

• Journal of The Korean Association For Science Education
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• v.21 no.3
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• pp.487-496
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• 2001

In a 7th graders' cooperative science class, verbal behaviors were categorized and their relationships with the improvement of learning strategies used. motivation, and attitudes were investigated. Students' perceptions of cooperative learning were also studied by the achievement level. Verbal behaviors in cooperative learning were positively related with the improvement of monitoring and organization strategies used, self-efficacy, and attitude toward science class. In the analyses of students' perceptions of cooperative learning, medium- and low-achieving students had positive perceptions but some high-achieving students had negative ones. In the aspect of effectiveness of cooperative learning, especially, medium- and low-achieving students perceived that they could learn more and better due to verbal interactions with peers. To be contrary, high-achieving students perceived that they learned less and superficially.

• Journal of Korean Library and Information Science Society
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• v.47 no.3
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• pp.187-211
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• 2016

The present study investigates the seventh and the eighth graders' perception of Free Learning Semester Programs offered by libraries by developing a survey questionnaire on students' needs for Free Learning Semester Programs of Libraries. The skills that middle school students want to improve in Free Learning Semesters are career exploration skills, and the type of Free Learning Semester that is most intensively implemented is career exploration activities. Programs are often offered in the form of experiential classes. Regarding the activities that the students want to participate during Free Learning Semester, the most preferred activities included field experience activity in the career exploration domain, cooking class in the student choice program, smartphone app development in club activities, design activity in the art domain, the badminton in the physical education domain, and using iPad in the information use skills. In addition, among the library programs in coordination with Free Learning Semester, the students liked the occupational experience program most. Future studies need to include the development and implementation of Free Learning Semester Programs based on students' opinions, and investigate their satisfaction with the Free Learning Semester Programs offered by libraries.