• School Mathematics
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• v.18 no.4
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• pp.903-922
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• 2016

This paper examined vocabulary in elementary mathematics textbooks and workbooks for the grade band of 3~4. This study focused on the adequacy of vocabulary using 9-degree of semantic difficulty. The results of this study showed that about three to eight percent of vocabulary with difficulty for students in grades 3~4 was employed. Whereas some difficult vocabularies were used along with the picture that helps students understand their meanings, others were presented without any illustrative tools. The most frequent vocabularies in the main activities of the mathematics textbooks included 'investigate', 'represent', 'number', 'how many', and 'method'. Based on these results, this study provides textbook writers with implications on what to further consider in dealing with vocabulary in instructional materials.

• Proceedings of the KAIS Fall Conference
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• 2010.11b
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• pp.1000-1004
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• 2010

본 연구는 도시지역 1개 초등학교 5 6학년과 농촌지역 일개 군의 2개 초등학교 5 6학년을 대상으로 도시와 농촌 초등학교 5 6학년의 변비 유병률을 파악하고, 이와 관련된 배변행태, 식습관 및 운동 습관 요인, 스트레스 등을 분석하여, 학생들이 바람직하고 올바른 생활습관을 갖도록 하고 학생들의 변비 증상을 개선하고 예방하여 건강증진을 도모하는 기초자료로 활용하고자 시도된 단면조사연구이다. 연구대상자는 임의 추출방법에 의하여 선정된 3개 초등학교 5 6학년 재학생 총 585명을 대상으로 하였다. 연구방법은 2009년 10월에 임의로 선정된 3개 학교의 보건선생님을 통하여 연구대상자에게 설문지를 배포하여 대상자 스스로 기입하도록 하였다. 본 연구의 결과로 자가보고에 의한 변비의 유병률은 전체 22.1%로 남학생 16.9%, 여학생 27.0% 이었으며, 주중 3회 미만의 배변횟수를 변비로 정의하였을 경우 변비 유병률은 15.7%로 남학생 11.6%, 여학생 19.6%로 여학생의 변비 발생률이 높았다. 거주지역별로는 농촌 지역에 거주하는 대상자가 도시 지역에 거주하는 대상자보다 변비 발생이 높은 것으로 나타났으며 변비발생과 운동습관과의 관계에 있어서는 운동을 하지 않는 대상자가 변비 유병율이 높게 나타났다. 변비 분류에 의한 배변습관에서는 변비군에서 배변 시간이 10분 이상이 많았으며, 시험기간 중 변비경향 또는 변을 보지 못 한다가 정상군보다 높게 나타났다. 또한, 변비군의 치료관련 행태에서는 18.3%가 변비치료를 위해 변비약을 복용한 경험이 있는 것으로 조사되었으며, 배변 형태에 변화가 있을 경우 상담자로는 가족 또는 혼자 판단하는 경우가 대부분이었다. 변비 분류에 의한 배변 관련 증상의 분포는 변비군에서 항문통증 경험, 항문 출혈 경험 등이 정상군보다 높게 나타났다. 주중 3회 미만의 배변횟수를 변비로 정의 하였을 경우와 배변 관련 증상의 분포는 변비군에서 항문통증 경험, 배변 후 상쾌하지 못함 등이 정상군보다 높게 나타났다. 학교에서의 배변여부는 변비군에서 학교에서 배변을 하는 비율이 정상군보다 높았다. 변비여부를 종속변수로 하여 변비발생에 영향을 미치는 요인을 분석한 결과 성, 학년, 거주지역에서 변비발생의 위험요인으로 도출되었다. 주 3회 미만의 배변횟수를 변비라고 정의할 경우, 변비발생에 영향을 미치는 요인을 분석한 결과 성, 학년, 모직장 유무, 운동이 변비발생의 위험요인으로 도출되었다. 본 연구에서는 초등학교 5 6학년을 대상으로 배변 행태, 식습관, 스트레스, 학교에서의 배변습관 등을 조사해 본 결과 상당수 학생들의 배변 실태가 좋지 않은 것을 알 수 있었다. 바람직하지 않은 식습관, 운동 부족, 과다한 스트레스 등은 학생들의 변비 발생의 위험 요인이 될 수 있으므로 변비의 발생을 예방하기 위해서는 매일 적절한 운동을 하고 인스턴트음식과 패스트푸드섭취 등을 줄이고 올바른 생활습관 및 스트레스 관리 등이 필요하며 부모들의 자녀에 대한 관심이 더욱 필요하다. 이를 위해서 초등학교부터 변비 예방을 위한 체계적인 프로그램을 만들고, 실시하여야 하며 또한 보건교육을 통하여 건강한 생활습관을 습득하고 변비를 예방하는 노력이 필요하다 하겠다.

• The Journal of the Korea Contents Association
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• v.20 no.1
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• pp.99-106
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• 2020

The aims of this study were to analyze the cultural contents of 5th and 6th grade English textboooks written according to 2015 Revised National Curriculum, and to examine how much suggestions from preceding studies were reflected in the English textbooks. This study also aims to seek directions for desirable culture education in Elementary English textbooks. For this purpose, the culture content in 5th and 6th grade English textbooks were analyzed according to the types, materials, and background. The results show that the current English textbooks still has an imbalance by culture type, material, and background. Futhermore, the suggestions from previous studies were not fully reflected to new English textbooks. Therefore, cultural contents in textbooks should include more varied and balanced culture types, materials, and background in order for effective cultural education. Based on the findings, several suggestions are made for future research.

• The Mathematical Education
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• v.60 no.3
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• pp.265-279
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• 2021

In this study, by analyzing of types and functions of questions presented in Data and Chance area of the mathematics textbooks for grades 1-6 of the 2015 revised curriculum, the characteristics of the questions presented in the textbook were identified, and implications for teaching and learning related to the questions in this textbook were obtained. Types and functions of the presented questions showed different proportions of appearance according to the grade clusters, and this seems to be related to the learning contents for each grade clusters and the characteristics of grade clusters. In addition, it can be seen that the functions of questions are related to the types of questions. Teachers should have pedagogical content knowledge about Data and Chance area as well as developmental characteristics for each grade clusters. In addition, the teacher should present an suitable question for the level of grade clusters and the nature of the content to be taught so that effective learning can be achieved based on the understanding of the characteristics and functional characteristics of each type of questions. The results of this study can contribute to statistical teaching in a progressive direction by providing a foundation for textbook writing and teaching/learning.

• Journal of The Korean Association of Information Education
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• v.18 no.2
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• pp.203-212
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• 2014

With regard to recently emerged problems of smartphone addiction among adults and adolescents, this paper researched upper-grade elementary students depending on various demographic factors that have not been studied thoroughly so far. The survey was conducted on 1570 students in grades 4~6 of schools in Gyeonggi province. Results showed that, first, the average rate of smartphone ownership was about 66%. Second, about 1% of the students belonged to high-risk group, 5.7% to at-risk group, and normal user group was 93.3%. Third, based on the demographic factors, grade and academic achievements each was significantly correlated to the type of addiction group. For example, students with poor academic performance or in higher grade were more likely to be highly addictive. Fourth, both groups of at-risk and of normal-user pertaining to these factors - in urban areas, male students, sixth-grade, in dual income families - showed higher addictiveness score. But they were contrasted in the aspects of household economy and academic performance: at-risk group was more addictive in affluent families or excellent academic performance, whereas normal-user group had higher level of addictiveness in case of poor families or lower academic performance.

• Education of Primary School Mathematics
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• v.24 no.4
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• pp.189-202
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• 2021

The teacher's questions presented in the problem-solving situation stimulate students' mathematical thinking and lead them to find a solution to the given problem situation. In this research, the types and functions of questions presented in chapters of Pattern area of the 2015 revised elementary school mathematics textbooks were compared and analyzed by grade cluster. Through this, it was attempted to obtain implications for teaching and learning in identifying the characteristics of questions and effectively using the questions when teaching Pattern area. As a result of this research, as grade clsuter increased, the number of questions per lesson presented in Pattern area increased. Frequency of the types of questions in textbooks was found to be high in the order of reasoning questions, factual questions, and open questions in common by grade cluster. In chapters of Pattern area, relatively many questions were presented that serve as functions to help guess, invent, and solve problems or to help mathematical reasoning in the process of finding rules. It can be inferred that these types of questions and their functions are related to the learning content by grade cluster and characteristics of grade cluster. Therefore, the results of this research can contribute to providing a reference material for devising questions when teaching Pattern area and further to the development of teaching and learning in Pattern area.

• Journal of the Korean Data and Information Science Society
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• v.22 no.6
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• pp.1167-1173
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• 2011

The goal of this paper is to suggest an algorithm to get forecasting for the numbers of students in the city or county in local government by using the double exponential smoothing method. By 2044 year, the third year of high school students in the Chilgok, Gumi, Gyeongsan, Andong, Pohang and Gimchen are reduced about 40-70%, the those of in the remaining city or county are reduced about 70-95%. In conclusion, the forecasting numbers of students of the 23 counties in Kyungbuk Province are on the decrease to 40%-100% until 2044 year in comparison with the numbers of students on 2010 years.

• School Mathematics
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• v.15 no.4
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• pp.759-783
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• 2013

Both curriculum and textbooks play an important role in the process of didactical transposition from mathematics as a science to school mathematics. The 2009 revised national curriculum for mathematics introduced the system of grade-band, so its achievement criteria for mathematical contents tend to be addressed more and less generally in the curriculum. We need to investigate whether the achievement criteria were applied meaningfully in elementary textbooks for mathematics. This study aims to recognize the connection between the curriculum and the textbooks and make a suggestion for composing the following curriculum and its textbooks. To do this, we analyzed the mathematics textbooks for 1~2 grades in relation to the mathematical contents as per reconstructed one of curriculum achievement criteria, the mathematical terms and symbols, and the mathematical processes -mathematical problem solving, mathematical reasoning, mathematical communication. Based this analysis, futhermore, this study includes some didactical discussions and implications for development of mathematics textbooks in 3~4 and 5~6 grade-bands.

• Journal of dental hygiene science
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• v.11 no.6
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• pp.521-526
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• 2011

The purpose of this study was to evaluate the long term effect of school-based oral health program on decrease of dental caries among elementary school children. The subjects of this study were total 727 students of one elementary school in Deagu, Korea. They had received school-based oral health programs for more than one year since 2004. This school-based oral health program included regular oral examination, fluoride mouth-rinsing, pit-and-fissure sealing, APF gel application, tooth brushing instruction and take the xylitol tablet after lunch during school days. The subjects' oral health status were examined by two calibrated dentists every year from 2004 to 2009. The DMFS index of $1^{st}$ grade to $6^{th}$ grade experimental and control group was 0.07, 0.39, 0.55, 0.67, 0.81, 1.79 and 0.31, 0.86, 1.07, 1.04, 2.71, 3.08 respectively. It's significantly different in $5^{th}$ grade(p<0.001) and $6^{th}$ grade(p=0.018) when it compare with control group. This study partially showed effect of school-based oral health programs on decrements of dental caries. This program should be expanded widely among elementary school in Korea. Xylitol tablet also recommended to included in school-based oral health programs.

• Journal of Educational Research in Mathematics
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• v.26 no.1
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• pp.121-141
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• 2016

In Korea where there is the national curriculum and teachers depend highly on textbooks, the school mathematics is based on curriculum and textbooks. Especially considering responsibility that textbooks should reflect the curriculum properly, it is necessary to analyze the connection of mathematics curriculum and textbooks in order to review and improve the quality of our mathematics education. This research analyzes the connection of curriculum and textbooks for 5~6 grades and aims to have some implications for revision of the textbooks when application of elementary mathematics textbooks based on the 2009 revised national curriculum is completed to all grades. Following the preceding research for 1~2 and 3~4 grades, this research sets 5~6 grades as a subject of analysis and has four contents of analysis; analysis of textbooks based on restructured achievement criteria, analysis of connections between unit objectives of textbooks and the reconstructed achievement criteria, analysis of textbooks related to mathematical terms and symbols, and analysis of textbooks related to mathematical process. The result of analysis has some implications to develop textbooks based on the 2015 revised national curriculum.