• East Asian mathematical journal
• /
• v.31 no.2
• /
• pp.275-299
• /
• 2015

The purpose of this study is to provide an opportunity for better understanding and application of 2009 revised elementary school mathematics textbooks through survey data and focus group interview on structures of textbooks. First, We collect online survey results which 2333 elementary school teachers participated. Next, We interview focus group(8 teachers) about shapes of textbooks, quantity of learning contents, activities and problems for evaluation in the mathematics lessons. Storytelling is especially issued in the 2009 revised mathematics curriculum. We intensively discuss learning and teaching methods with application of storytelling textbooks; interests of students, role of storytelling textbooks etc. As results of analysis, the positive rate to use the 2009 revised textbooks is relatively high about shapes and activities of textbooks. But there is more considered about storytelling method. Storytelling may be positive on improvement of learning interests and participation of students. In order to develop these advantages, studies in relation of storytelling are more proceeded and teaching materials for teachers are required effectively in order to applicate to the elementary school.

• The Mathematical Education
• /
• v.46 no.3
• /
• pp.273-292
• /
• 2007

The purpose of this study was to find out how second, fourth and sixth graders understood the main contents related to spatial sense in the Seventh National Mathematics Curriculum. For this purpose, this study examined students' understanding of the main contents of congruence transformation (slide, flip, turn), mirror symmetry, cubes, congruence and symmetry. An investigation was conducted and the subjects included 483 students. The main results are as follows. First, with regards to congruence transformation, whereas students had high percentages of correct answers on questions concerning slide, they had lower percentages on questions concerning turn. Percentages of correct answers on flip questions had significant differences among the three grades. In addition, most students experienced difficulties in describing the changes of shapes. Second, students understood the fact that the right and the left of an image in a mirror are exchanged, but they had poor overall understanding of mirror symmetry. The more complicated the cubes, the lower percentages of correct answers. Third, students had a good understanding of congruences, but they had difficulties in finding out congruent figures. Lastly, they had a poor understanding of symmetry and, in particular, didn't distinguish a symmetric figure of a line from a symmetric figure of a point.

• Journal of Fisheries and Marine Sciences Education
• /
• v.21 no.4
• /
• pp.471-488
• /
• 2009

This study aims to analyze the illustrations of social studies textbooks in order to find both sex-stereotypes and changing trends of sex-stereotypes last 60 years. For the study, 56 textbooks of elementary social studies of grades 3 to 6 are collected from the first to seventh national curriculum. The illustrations of social studies textbooks are analyzed from two different perspectives. First, it analyzes the numbers of male and female appearances in the work place of the textbook illustrations. Second, it analyzes sex-stereotypes in the work place. Through the analysis, this study tried to find changing trends of sex-stereotypes last 60 years in the illustrations of social studies textbooks. The findings and suggestions are as follows. First, we need to make more female appearances in the illustrations in order to make female and male appearances balanced in the textbooks. Second, we need to make more female appearances in the work place, especially providing more female appearances in the illustrations of high-ranking jobs. Third, we need to present male and female characters more balanced in a variety of life situations, thereby contributing to the equal and just society to come in the near future.

• Journal of Korean Biological Nursing Science
• /
• v.12 no.3
• /
• pp.148-156
• /
• 2010

Purpose: Oral mucositis (OM) is a serious consequence of chemotherapy that cancer patients must undergo. The objectives of this study were to find out reliability and validity of patients self-reported daily questionnaires on OM, and the impact OM makes on daily functions. Method: To test the reliability of oral mucositis daily questionnaire (OMDQ), internal consistency of the instrument (Cronbach's ${\alpha}$ and correlation between items) and test-retest reliability were analyzed. Criterion validity and discriminative validity were evaluated using WHO, oral assessment guide, and Nicolatou assessment tool. Forty-eight acute leukemic patients under chemotherapy were enrolled in this study. Result: The Cronbach's ${\alpha}$ coefficient indicated sufficient internal consistency. Correlations of Mouth and throat soreness (MTS) and MTSActivity Limitations (MTS-AL) were statistically significant. MTS and MTS-AL scores on consecutive days were highly correlated (days13,14=.84-.96; test-retest reliability). OMDQ scale had high criterion validity and discriminative validity. Patients with more severe WHO OM grades had higher MTS mean scores. Conclusion: Oral mucositis in acute leukemic patients under going chemotherapy can be easily quantified by patient self-administered OMDQ with reliability and validity.

• Child Health Nursing Research
• /
• v.10 no.3
• /
• pp.332-339
• /
• 2004

Purpose: To develop a tool to evaluate middle school sex education programs. Method: An evaluation tool was developed in 4 stages: first, preliminary items were developed based on the sex education guidebook for teachers published by the Korean Ministry of Education and Human Resources Development; second, a panel of specialists reduced the number of preliminary items by 3 validity tests on the contents; third, final items were selected from the results of pre-test. Finally, reliability and validity were tested by a sample of 601 middle school students of both genders attending all three grades. Result: The developed evaluation tool contained 31 items on the sexual knowledge and 22 items on the sexual attitude. The results of reliability tests were as follows: Cronbachs alpha for sexual knowledge was .84; and for sexual attitude was .88. Conclusion: This study suggested the developed evaluation tool for sex education programs for middle school students had a high degree of reliability and validity. Therefore, it can be utilized to effectively evaluate Korean middle school sex education programs.

• Journal of Families and Better Life
• /
• v.19 no.6
• /
• pp.173-183
• /
• 2001

This study examined adolescents'behavioral attitude and perception toward the elderly relating to the experiences with their grandparents. In addition, the study explored the relations between perception and behavioral attitude toward the elderly The numbers of sample are 1,477 adolescents who were 5th grade of elementary, 2nd grade of both middle and high school. They answered three different questionnaires relating to perception and behavioral attitude toward the elderly including positive perception, image and perspectives toward the elderly; behavioral attitude toward the elderly; and biases toward the elderly. Adolescents'relationship with their grandparents was assessed by questioning about present and past experiences of co-living with grandparents, living distance to grandparents, frequencies of visits and phone calls between grandparents and adolescents, and others. The results of the study are summarized as follows: ( 1 ) Adolescents'behavioral attitude and perception toward the elderly tends to be positive, (2) Adolescents'sex and grades significantly affect the perception and behavioral attitude toward the elderly, (3) The closer to the grandparents adolescents are, the more positive attitude and perception to the elderly; (4) Adolescents'perception better explains their behavioral attitude toward the elderly.

• Journal of the Korean School Mathematics Society
• /
• v.17 no.2
• /
• pp.291-319
• /
• 2014

The purpose of this study is to investigate students' thinking and understanding through working on Worked-out Examples on numbers and operations, specifically, radical and real numbers and operations in the middle grades. For this purpose, we developed a set of Worked-out Examples; middle school students independently worked on them. Then two students were interviewed. These data were analyzed by using the framework of mathematical proficiency. The data analysis suggested that the students seemed to go through the processes involving a combination of understanding and computation, computation and reasoning, and understanding, computation and reasoning. Also, it appeared that most of the students have difficult solving problems involving with radical and real numbers in related to strategic competence.

• Journal of the Korea Society of Computer and Information
• /
• v.15 no.6
• /
• pp.101-110
• /
• 2010

This study investigated the relation between the liberal arts education service and students' satisfaction. The results of the study show that students are satisfied with all of five service quality factors, students' intention of studying, full time instructors' teaching and high GPA in taking liberal arts classes. However, educational factors such as the quantity of home work, frequency of test and the size of class, which can influence the quality and contents of classes, do not impact the students' satisfaction of liberal arts education. The college students of Korea may tend to be more satisfied with the liberal arts classes which they feel easier to study and to get better grades.

• Journal of Agricultural Extension & Community Development
• /
• v.23 no.2
• /
• pp.157-167
• /
• 2016

Nowadays a sense of community based on our community further weakens due to globalization, industrialization, the development of transportation and communication, etc and the community as cultural and psychological units is focused on. In other words, the concept that emphasizes the aspect of 'we' sharing the unique value and goal of community is used. In this current situation, school as an important community organization has been in the spotlight. In particular, college compared with other communities has a special influence on the community. Therefore it is regarded as an important community organization and its importance as part of our efforts to decrease the college students wastage rates continues to grow. The study about school as an important community organization has been conducted actively. However the people in most studies are elementary, middle, and high school students, so there are limitations to what these study findings apply to college. Therefore, this study conducted factor analysis of college sense of community for local college students, categorized it, analyzed the factors having influence on each factor and then looked for suggestions of ways to strengthen college sense of community. According to study, sense of community is categorized into three factors such as 'sense of belonging', 'sense of solidarity', and 'sense of emotional closeness'. After analyzing the factors influencing types of sense of community, factors relevant to them are grades, intimate friends, subjective well-being, community volunteer work, college service satisfaction, and so on.

• Journal of the Korean Crystal Growth and Crystal Technology
• /
• v.25 no.5
• /
• pp.188-192
• /
• 2015

Gemological and spectroscopic properties of HPHT synthetic diamonds from New Diamond Technology (NDT) company in St. Petersburg (Russia) were examined. Their color (colorless, near-colorless with some boron and Fancy blue with high boron content) and clarity ($VVS-SI_1$) grades were comparable to those of top natural diamonds. NDT synthetic diamonds fluoresced and phosphoresced blue or orange under SWUV light. Photoluminescence spectra revealed H3 center with very small intensity and NV centers. The intensity of H3 in NDT synthetic diamond has very weak in comparison with natural one. Using a combination of gemological and spectroscopic tests, gem-quality synthetic diamonds from NDT can be distinguished from natural diamonds of similar quality.