• Journal of the Korean Chemical Society
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• v.57 no.4
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• pp.507-514
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• 2013

In this study, the characteristics of visually impaired elementary students' conceptions on dissolution were investigated. The semi-structured interviews about phenomenon of dissolution, uniformity of solution, conservation of mass on dissolving and volume change during dissolving were conducted with 4 fifth-grade elementary students with visual impairments (three were blind, and one had low-vision). Interviews were recorded and the data were analyzed after transcription. As a result, students with visual impairments knew well about the phenomenon of dissolution, uniformity of solution, and conservation of mass on dissolving, while they couldn't explain volume change during dissolving. Although students with visual impairments were found to have similar level of understanding with students without visual impairments, they had sounder understanding about uniformity of solution. However, students with visual impairments had superficial understanding based on phenomenal experiences. Some of students with visual impairments tried to give micro-level explanation. Based on these results, educational implications were discussed.

• Journal of the Korean School Mathematics Society
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• v.8 no.2
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• pp.183-201
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• 2005

Illustrations and letters are two components of school textbooks. In the case of low grades of elementary school, textbook's illustrations play an important role in learning because many parts of curriculums(lessons) are represented by the visual forms through illustrations. So elementary mathematics textbook's illustrations have to make clear mathematical concepts and principles by visual simplification and bring out of the interest and motivation of elementary school students' learning. In this paper, we analysed the external and content aspects of textbook's illustrations, focusing on the textbook of the second grade. We investigated number, kindness, size, ratio, and clearness of illustrations in regard to external aspects. On the aspects of content, we analysed the role of illustrations and the degree of agreement with contents. Also we classified types of error in the textbook's illustrations and presented examples of errors which was found.

• Journal of the East Asian Society of Dietary Life
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• v.18 no.5
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• pp.675-683
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• 2008

본 연구는 초등 고학년 아동의 과일과 채소 섭취 수준 측정을 위한 간단한 식품 섭취 빈도 조사지를 개발 및 평가하고자 실시되었다. 2001년도 국민건강영양조사에 참가한 만 $9{\sim}11$세 아동의 24-시간 회상 자료에 기초하여 식품섭취빈도 조사지의 항목 선정을 위한 기초 조사를 하였다. 각 과일과 채소 식품의 일일 평균 섭취량을 전체 아동 및 섭취량의 4분위 집단 별로 산출한 후, 이 자료를 바탕으로 전체 인구 집단의 섭취량을 대변할 수 있을 뿐만 아내라 고 섭취군과 저 섭취군 간의 차이도 나타낼 수 있는 항목을 선정하였다. 총 9개의 과일 항목과 11개의 채소 항목이 식품 섭취 빈도지에 포함되도록 선정되었으며, 섭취 빈도에 대한 응답 항목은 지난 7일 간의 섭취에 대하여 1개의 선택 범주가 제시되었다. 개발된 조사지의 신뢰도와 상대적 타당도에 대한 평가는 서울에 위치한 한 공립 초등학교에 재학 중인 153명의 $4{\sim}6$학년 학생들을 대상으로 실시하였다. 한 달간의 간격을 두고 2회에 걸쳐 조사를 실시한 자료를 이용하여 검사-재검사 신뢰도를 평가하였으며, 두 번째 방문 시에 28개의 과일 및 채소 항목을 추가로 포함하고 있는 식품섭취빈도 조사지를 더불어 실시한 자료를 바탕으로 상대적 타당도를 평가하였다. 상관 분석과 항목 별 빈도 응답 및 섭취 수준에 따른 집단내 순위 분류의 일관성에 대한 분석을 실시한 결과, 본 연구에서 개발된 20개 항목의 과일 채소 식품 섭취빈도 조사지의 신뢰도와 상대적 타당도가 적정 수준 이상으로 나타났다. 신뢰도를 살펴보기 위한 개별 항목 및 과일, 채소, 과일+채소 섭취 빈도에 대한 상관계수는 $0.22{\sim}0.64$(p<0.001)이었으며, 항목별 빈도 응답의 일관도는 평균 69.3%(<=1 빈도 응답차이)와 81.3%(<=2 빈도 응답 차이)로 나타났다. 상대적 타당도를 살펴보기 위한 과일, 채소, 과일+채소 섭취 빈도에 대한 상관계수는 $0.91{\sim}0.93$(p<0.0001)로 높게 나타났다. 따라서 본 연구를 통하여 개발된 식품섭취빈도 조사지는 초등고학년 아동의 과일채소 섭취 수준을 간단히 심사하거나 평가하는 도구로서 유용하리라 사료된다.

• Journal of the Korean Society for Library and Information Science
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• v.55 no.2
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• pp.131-146
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• 2021

In this study, overlapping recommended books in different schools were positively analyzed and the extent to which the recommended books leading to actual loan was statistically analyzed. The purpose of the study is to confirm the effects of recommended books by analyzing the data and extracting the proofs. For the method of research, eighteen elementary schools' recommended book lists and thirteen elementary schools' loan data were collected and compared by schools, by grades in a basic statistical analysis method. The result shows that recommended books similarity was low and recommended books affected the total volume of lend books. Loan frequency by grades showed the difference and in every school, lower grades had high loan frequency. The result of this study will be applied as basic data for applying recommended books in school libraries.

• Child Health Nursing Research
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• v.17 no.3
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• pp.198-205
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• 2011

Purpose: This study was done to identify sexual knowledge and perception and current status of sex education among parents of first and second grade elementary school age children. Methods: Participants in the study were recruited from parents with a child in the lower grades and who resided in Seoul. From January 1 to February 28, 2011, data were collected using a self-report questionnaire. Data were analyzed using McNemer test, paired t-test, ANONA, and Scheffe test. Results: Mean sexual knowledge scores for fathers and mothers were $27.74{\pm}4.94$, and $28.62{\pm}4.70$ respectively. Parent's sexual knowledge correlated with their occupation, education level, and family's monthly income. Conclusion: Study results showed that both parents are aware of the need for sex education. However, at home, mothers have a more active attitude towards sex education and conduct the education more often than fathers.

• The Journal of the Korea institute of electronic communication sciences
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• v.7 no.5
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• pp.1165-1171
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• 2012

Latest, it is dealt with seriously problems that an intruder kidnapping students in elementary school. Especially young students is more vulnerable in these risks. Elementary School has many limitations in controlling the intrusion of trespassers. A problem occurs that requires a lot of manpower through the deployment and management of security systems such as CCTV and control systems. In this paper, we is designed and implemented the outsider access management system using a sensor network and PZT camera called the USN's core technology to monitoring the access control for controlling the mobility of the trespassers.

• The Korean Journal of Applied Statistics
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• v.26 no.3
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• pp.421-429
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• 2013

Modern statistics is used in many fields; however many users face difficulties in understanding statistical concepts. On the other hand, elementary school curriculum covers stem and leaf plot, pie chart, charts for proportional data as well as descriptive statistics including the mean. We find that an "intuitive" statistical package focused on 5-8 graders for statistical education will help future statistics users understand statistical concepts at earlier stages of their lives.

• Korean Journal of Social Welfare Studies
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• v.40 no.1
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• pp.197-234
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• 2009

Typological theories of offending postulate that childhood-onset delinquents have a high likelihood of being serious and chronic offenders and that there are a distinct set of risk factors predicting early-onset antisocial behaviors. It is useful to empirically classify children into subgroups based on their deviant behaviors because it helps us to identify unique factors associated with each subgroup. Using the first two waves of the Korean Youth Panel Survey, Elementary School Data, this study aimed(a) to empirically classify 5th graders into latent delinquent subgroups, and (b) to examine the impact of individual, familiar, school, and peer factors on the latent delinquent classes. Latent class analysis yielded three latent classes based on 15 indicators of deviant behaviors - delinquent class, low-level delinquent class, & normative class. The results from multivariate multinomial logistic regression analyses revealed that being male, reporting low self-control, coming from poor family, high association with deviant peers, and being bullied increased the risk of being in the delinquent class. Moreover, low self-control, aggression, domestic violence, low level of attachment to teachers, and deviant peers independently increased the risk of being in the low-level delinquent class compared to the normative class. Based on the study findings, implications for practice as well as future studies were discussed.

• Proceedings of the KSCN Conference
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• 2004.05a
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• pp.407-408
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• 2004

비만은 신체에 지방조직이 과다하게 축척된 상태로 정의한다. 세계보건기구에서는 비만을 인류의 심각한 보건문제로 규정하고 이를 치료가 필요한 만성질병으로 분류하였다. 우리나라의 경우에서도 비만 인구가 점점 증가하고 있으며, 비만이 발생하는 연령이 낮아져 학동기 아동의 비만이 현저히 증가되고 있는 추세여서 중요한 보건문제로 부각되고 있다. 이에 본 연구는 강남지역에 거주하는 초등학교 4,5,6학년 아동 303명을 대상으로 비만도에 따라 비만군(PIBW $\geq$ 120, N = 61), 정상군(90 $\leq$ PIBW＜110, N = 146), 저체중군(PIBW ＜ 90, N = 96)으로 분류하여 신체계측뿐 아니라 영양소섭취량, 패스트푸드섭취빈도, 생활습관등을 조사하여 비만과 관련된 요인을 분석하였다.(중략)

• Proceedings of the Korea Multimedia Society Conference
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• 2003.11b
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• pp.893-896
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• 2003

기존의 멀티 프로그램이나 환경에 관한 인터넷 사이트의 환경교육 자료들이 초등학교의 또래 문화에 부합하지 않는 내용이 상당히 많이 수반되어 일선 학교에서 적용하는데 나름대로의 고충이 있었다. 이런 점을 고려하여 학습자 중심의 흥미와 놀이, 가상 실습 중심의 멀티미디어 프로그램을 설계하기로 하였다. 본 연구에서 지향할 멀티미디어 프로그램의 특징은 환경교육 영역 중 초등학교 저학년의 교육과정을 감안하여 그 수준에 맞도록 내용을 함축하여 구성주의 이론에 따른 상호작용을 강화하고 상호작용 기법을 활용하여 문제해결학습 형태로 프로그램이 전개된다는 점이다. 또한 학습자 스스로 자기 주도적 학습을 할 수 있게 될 것이고, 컴퓨터를 통하여 가상의 문제 상황을 제시하고 이를 해결하는 방식으로 설계 및 구현됨으로써 컴퓨터를 통한 문제 해결 학습의 방향을 제시하고자 한다.