• Journal of Environmental Health Sciences
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• v.41 no.4
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• pp.231-240
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• 2015

Objectives: Blood mercury levels among adults living in certain areas of the Gyeongsang Provinces have been shown to be very high (Kunwee County $29.6{\mu}g/L$, Yeongcheon-city $26.7{\mu}g/L$). The purpose of this project was to determine mercury exposure levels in schoolchildren and factors related with their mercury levels in high mercury exposure areas identifyed by the 2007 Korea National Environmental Health Survey. Methods: From June to September 2010, 1,097 students from grades 3 to 6 at 19 elementary schools participated in this study, including 294 students from 10 elementary schools in Kunwee County, 529 students from Yeongcheon City, 122 students from two elementary schools in Pohang City, North Gyeongsang Province, and 152 students from two elementary schools in Ulsan Metropolitan City. Biological samples from schoolchildren, including whole blood, urine and hair, were collected to measure total mercury at the time of a health check up. Information about children was collected by questionnaire. Total mercury concentrations in blood were measured using the Direct Mercury Analyzer 80 with the gold-amalgam collection method. Results: The mean mercury levels were $2.70{\mu}g/L$ in 1,091 blood samples, $2.25{\mu}g/g-creat.$ in 820 urine samples and $1.03{\mu}g/g$ in 1,064 hair samples. Blood mercury levels in the schoolchildren was slightly higher than the result of $2.4{\mu}g/L$ from a 2006 survey of elementary school children on exposure and health effects of mercury by the National Institute of Environmental Research. However, 0.3% and 4.5% of participants exceeded the reference level of blood mercury by CHBMII ($15{\mu}g/L$) and the US EPA ($5.8{\mu}g/L$), respectively. The reference level of urine by CHBMII ($20{\mu}g/L$) was exceeded by 0.4% of participants. As factors, residence period in the study areas, residence type, father's education level and income all showed significant associations with mercury level in the biological samples. The number of dental amalgam sides showed an association with urine mercury. Fish intake preference and fish intake frequency were important factors in mercury levels. In particular, intake of shark meat and recent intake of shark meat were associated with higher mercury levels. In this regard, participation in the performance of an ancestral rite showed a relation with higher mercury levels. Conclusion: The intake of shark meat was very important factor to high mercury exposure level. It is recommended to monitor and manage students with high mercury exposures who exceeded CHBM II and EPA guidelines, and include blood mercury testing in the Children's Health check up for this province.

• Journal of The Korean Association of Information Education
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• v.14 no.3
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• pp.449-459
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• 2010

Using a geometric computer program achieve learning effects as handling various function and has advantage to overcome the environment of classroom through providing an inquiring surroundings in the figure learning at an elementary school. There are many software for drawing the geometric. But currently most is focus on how to use the softwares without contents. So, It is necessary to develope a geometric software adapted cognitive development of primary schoolchildren. This study is aim to analyze elementary mathematic curriculum based on Van Heiles theory, to develope the software(Geometry for Kids : GeoKids) considering cognitive level of the primary schoolchildren. This software is developed to substitute a ruler and a compass considering cognitive level of the primary schoolchildren. Using mouse, GeoKids software help a child to draw easily lines and circles and this software notice another lines and circle automatically for a more accurate drawing figures. Children can use practically this software in connection with subjects of elementary mathematic curriculum.

• Journal of the Korean Dietetic Association
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• v.11 no.2
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• pp.205-215
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• 2005

Health is easily overlooked because it doesn’t be changed good or bad due to sudden effort or indifference unexpectedly but kept in daily life. Especially, schoolchildren period, an important lifetime to develop both physically and mentally needs to be helpful to promote the growth of the body and keep well-balanced mind through balanced and nourishing diet. The purpose of this study was to develop nutrition education contents for discretional activities in elementary school. The present educational contents about food and nutrition was analysed in the curriculum of elementary school. The results showed the Korean language(20.8%) included an highest ratio in educational contents about food and nutrition, the next was the courses of physical education and wise life(18.1%, each). As the educational contents about food and nutrition in the textbook were dealt with food information (20.8%), Health․Disease(15.3%), and correct dietary habits by order. We could found more contents in the text for the higher classes than for the lower classes. But the most of the contents appeared lack of structure, profundity and continuity for the systematic nutrition education in its entirety. The developed nutrition education contents for discretional activities in this study consist of korean dinning cultures and foreign dinning cultures, correct dinning etiquette, how to choose healthy food, personal sanitary and health, nutrients and food tower, and problem for children’s nutrition as main subject. This six main subjects were composed of 23 subtitles. The teaching manual consisted of the educational goal, background, teaching plan and effect-evaluation plan, and the notice point for the effective lesson. The teaching plan was made for 30 hours and consisted of cooking course, singing/making lyrics, games in nutrition, debate on dietary habit, and role play etc which are oriented to practical learning. We intended to develop this program that attempts to improve in dietary habit of schoolchildren. It is because once formed an adults dietary habit is difficult to change. Schoolchildren’s period is the best adjustable stage. Therefore, nutrition education in elementary stage can change to dietary habit and build the awareness of health.

• The Korean Journal of Food And Nutrition
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• v.27 no.6
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• pp.1119-1131
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• 2014

The purpose of this study was to evaluate the effect of dietary education on improving preferences to Korean traditional foods in upper grades schoolchildren. The education group consisted of 184 children ($4^{th}$=65, $5^{th}$=50, $6^{th}$=69), while the control group consisted of 135 children ($4^{th}$=40, $5^{th}$=55, $6^{th}$=40). Each group was selected from a different school in Changwon. In the education group, 12 lessons were implemented using educational materials based on sensory education. For the evaluation, pre- and post-surveys were performed in each group using self-administered questionnaire surveys. Variables in the questionnaire consisted of self-efficacy, subjective norms, cognitive attitude, food neophobia scale, eating frequency, preference, intake experience, and nutrition knowledge. After education, the knowledge score improved significantly in both groups. However, self-efficacy (p<0.01), subjective norms (p<0.01), cognitive attitude (p<0.001) and food neophobia scale (p<0.001) changed significantly in only the education group. The intake frequency of Korean traditional foods did not significantly increase in either group. However, the preferences and intake experience of the foods, which were offered in class and school meals, changed significant in only the education group. In conclusion, dietary education based on sensory education may be useful for developing a positive eating attitude for Korean traditional foods in children.

• Journal of The Korea Institute of Healthcare Architecture
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• v.12 no.1
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• pp.27-39
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• 2006

This study was intended to present the proper operational scheme and present the criterion for establishment of proper convenient facilities and its planning method and the proper method of laying all sorts of teaching aids out. For this purpose, it attempted to investigate the type of crippled disorder and the behavioral characteristics of schoolchildren with crippled disorder with a focus on the descriptive study on disabled schoolchildren receiving complete integrated education. And it sought to analyze the present situation of complete integrated education and the case of integrated education and dissect the realities of its operation and the realities of the establishment of convenient facilities for disabled schoolchildren with a focus on the survey research.

• Journal of Family Resource Management and Policy Review
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• v.20 no.3
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• pp.45-65
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• 2016

The purpose of this study is to investigate the participation in social activities by full-time housewives with infants and preschool children. The data in this study comes from a 1 percent free sample of the 2010 Population and Housing Census collected by Statistics Korea. The statistical methods for this study were percentage, chi-square test, and logistic regression analysis. The findings are as follows. First, there are differences in participation in social activities according to number of infants, number of preschool children, and number of elementary schoolchildren. Second, there was the difference in participation in social activities between full-time housewives and full-time wives' husbands. Third, factors like full-time housewives' age, educational level, number of preschool children and elementary schoolchildren, number of rooms, and occupancy status affected participation in social activities by full-time housewives. These results show that full-time housewives were under pressure in relation to participation in social activities because of their caregiving labor but participated in religious and educational activities actively.

• The Journal of Korea Robotics Society
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• v.10 no.2
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• pp.53-60
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• 2015

Robots have been widely used for the education in kindergarten and elementary school. In this study, the cognition of parents on robots in education is investigated. The study is conducted by analyzing responses of 105 parents with kindergarten students and elementary schoolchildren. The survey results show that most students who have been taking the robotics education start it from five or seven years old. The students were mainly educated in the private institution. Therefore, the parents worry about the lack of professionalism about educational institute and teachers. In conclusion, the systematic curriculums and policy of robotic education are needed for kindergarten students and elementary students.

• The Journal of the Korea Contents Association
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• v.8 no.4
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• pp.285-293
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• 2008

Internet addiction is currently regarded as a problem for its negative function in the information-oriented society. Particularly in cases of elementary schoolchildren in their growth period, it is very important to grasp the schoolchildren's conditions in advance and guide them on a systematic basis before they get into the habit of addiction to the Internet. For this purpose, several research papers have already discussed the seriousness of Internet addiction. This research is aimed at conducting a positive research work on to what extent such academic research results had affected educational fields, and also at what level the seriousness of Internet addiction is staying at the present moment. For this, this research conducted a survey of the Internet addiction level for fourth, fifth, and sixth graders totalling in 448 from one elementary school located within the jurisdiction of Gyeongsangbuk-do through the on-line system and questionnaires from March 31 to April 3, 2008. And also looked into the level of perception on Internet addiction for 29 teachers within the surveyed school. The results of this study show that 90.1 percent(408 children) of the surveyed children were a member of a general user group. Such aspects are thought to have resulted from some factors that functioned in a positive way, such as teachers' proper perception on Internet addiction and their proper guidance against this, and plenty of conversation at the children's homes, and the children's smooth relationship between their friends and teachers.

• Nutritional Sciences
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• v.8 no.4
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• pp.250-255
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• 2005

The purpose of this study was to investigate the relationship among plasma leptin, lipid profiles, insulin levels, and percentage of body fat of 72 schoolchildren from Obese Clinic Center in Seoul. The subjects divided into two groups: 39 obesity children [obesity index greater than $20\%$] who did not have a discernable medical cause of their obesity and 33 children with a obesity index less than $20\%$. The mean age, height, and obesity index of the subjects were 10.4 years, 144.0 cm, and $21.3\%$, respectively. The mean glucose and insulin levels of the obese children were 80.5 mg/dl and $13.3\;{\mu}IU/mL$ and those of the non obese children were 82.0 mg/dl and $4.2\;{\mu}IU/mL$, respectively. Obese children had significantly (p<0.05) higher level of total cholesterol, triglyceride, VLDL-cholesterol, LDL-cholesterol, and insulin concentration than non-obese children. However obese children had a lower level of HDL-cholesterol than non-obese children. Plasma leptin level were also positively correlated with BMI (p<0.000l), body fat (p<0.0001), tricep skinfold thickness (p<0.0001), mid arm circumference (p<0.0001), and waist hip ratio (p<0.0001). Plasma leptin showed a significantly positive correlation with insulin (p<0.0001), total cholesterol (p<0.0001), LDL-cholesterol (p<0.0001), and triglyceride (p<0.0001) levels, however, it was negatively correlated with HDL-cholesterol (p<0.0001) levels. In conclusion, the concentration of leptin in the blood is significantly correlated with the amount of body fat, BMI, plasma insulin, and plasma lipid profiles.

• The Korean Journal of Food And Nutrition
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• v.27 no.3
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• pp.383-392
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• 2014

This study was implemented to understand the motivation factors for $2^{nd}$ grade schoolchildren that effect on their preference for the sweet taste. The subjects included were 118 children (59 boys and 59 girls) and 118 children's guardians, from one elementary school. Children participated in sweet preference test and questionnaire survey with researcher's guidance provided in the school. Children's guardians were asked to fill out the questionnaire via home-letters. The results were as follows: 59% of the children preferred the cocoa beverage with the highest concentration of sugar among five cocoa beverages (0%, 2.5%, 5%, 7.5%, and 10% of sucrose/milk volume). The variables consisted of affective attitude, cognitive attitude, self-efficacy, parenting style, and sweets frequency. According to the analysis, sweet preferences were correlated with children's affective attitude (r=-0.207, p<0.01), self-efficacy (r=-0.288, p<0.01), frequency of drinking carbonated beverage (r=0.272, p<0.01), preference for yogurt (r=0.184, p<0.05), and preference for sweet bread (r=0.226, p<0.05). These results indicated that children can be more affected by affective attitude than cognitive attitude, and self-efficacy can be an important motivation factor to control the eating behavior related to sweets. Therefore, nutrition educators need to focus on developing various methods related to increasing self-efficacy for encouraging and motivating healthy eating behavior in children.