• Journal of The Korean Association For Science Education
• /
• v.7 no.2
• /
• pp.21-35
• /
• 1987

Polyurethane foam was utilized to collect protists from the 2 ponds in Seoul National University and another pond in vicinity of Paldang Dam. The identified protists were 4 species in Cyanophyta, 2 species in Euglenophyta, 19 species in Chrysophyta, 9 species in Chlorophyta, 2 species in Ciliophora, and 3 species in Sarcodian. To test the adoptability of the sampling method for classes in junior and senior high school, frequency of the 25 protists in each observation and in each preparation were calculated. The families which were present at high frequencies were Naviculaceae. Fragilariaceae, Cymbellaceae and Coelastraceae. In an experimental application of the 40 pictures taken from the samples, students in junior classes recognized the protists by their outer morphology, internal structure. color, and colonial types, in decreasing order. Use of the collecting method and the applicability of protists for teaching biology were discussed.

• Journal of Educational Research in Mathematics
• /
• v.13 no.1
• /
• pp.77-94
• /
• 2003

This study attempts to compare the topic "approximate value" in mathematics text-books of the 2nd year of South Korean junior high schools and that of the 3rd year of North Korean high schools. In addition, a survey questionnaire was distributed to junior and senior high school students as well as to mathematics teachers in South Korea. Based on the results of the survey, this study attempts to uncover the issues within the current teaching methods of "approximate value" and proposes the directions in which the teaching of approximate value should go in order to enhance mathematical thinking power and creativity of the students. First, it Is necessary to teach students how an error applies to the real world. To accomplish this end, it may be worthwhile to consider introducing the relative errors with more seriousness. Second, it is more important to teach the way of thinking which is concealed in the background of the calculation methods of approximate values than to simply teach mere calculation methods. Third, it is necessary to teach the calculation of approximate value with more realistic examples. Fourth, It is needed to teach students what the differences are when the terminology of "approximately" and "about" is used in real life and in mathematics.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
• /
• v.28 no.1
• /
• pp.37-46
• /
• 1998

The purpose of this study was to evaluate the diagnostic performance of the senior dental students for the proximal dental caries on intraoral radiographs and to compare it with the dental hospital residents, the reference group. It was also investigated the diagnostic performance according to the carious lesion depth. Thirty-five intraoral periapical and bitewing radiographs with 213 proximal surfaces included in this study were selected from the dental patients at Chonnam National University Hospital. The observers were 181 senior dental students from 5 dental schools and 40 dentists who were second year resident from 5 dental hospitals. They were asked to evaluate the presence or the absence of the proximal dental caries. The results were as follows: 1. The mean of the hitting rate for the overall observers was 184.51 surfaces and the diagnostic accuracy was 86.62％. 2. The diagnostic performance of the sound proximal tooth surfaces was very high, i.e., 91.5％ true negative rate and 8.5％ false positive rate. 3. The diagnostic performance of the dentist group was higher than the student group(P<0.05). 4. The proximal dental caries perceptibility increased as the lesion depth increased significantly(P<0.001) except no difference between the carious lesion depth III and IV (P>0.001).

• Journal of The Korean Association For Science Education
• /
• v.13 no.2
• /
• pp.219-229
• /
• 1993

The purpose of this study is to investigate college science students' and science teachers' understanding of chromosomal behavior in the context of cell division. The research problems were as follows: 1. What is the level of college science students' understandings of chromosomal behaviors? 2. What is the level of science teachers' understandings of chromosomal behaviors? 3. What is the level of understanding by grade and major area? The sample consisted of 28 sophomore, 17 junior and 23 senior biology students; and 23 middle school science teachers and 14 high school biology teachers. The instrument of the study was a short answer required paper and pencil test. The results of the study were as follows: 1) About 15 percent of the sample could not count the number of chromosome in a cell in appropriate. 2) Seventy percent of the students, and 80 percent of the teachers identified homologous chromosomes as ones with the similar shape and size, and 30 percent of the whole sample could not pair two homologous chromosomes. 3) About 70 percent of the students and 30 percent of the teachers could not mark corresponding allele on chromosome. 4) Biology major students showed higher understanding of overall chromosomal behaviors than non Biology students. Based upon the results, some implications were made. The major one was a development of a teaching model in which students can improve the ability to connect chromosome theory to mendelian genetics.

• Research in Mathematical Education
• /
• v.23 no.4
• /
• pp.235-254
• /
• 2020

Through this study, we aimed to capture the nature of a mathematics method course, called "the Curriculum Development and Teaching Methods in Mathematics Education" which is a pedagogy course for teaching for secondary school mathematics taught at a university located in a south eastern part of South Korea. The research participants include three junior students who took the methods course and a local high school math teacher with two professors. The research has three parts. First, we designed a method course to prepare the junior or senior students for a teaching practicum. The individual students gave a mini lecture about a secondary mathematical topic as a course requirement. Second, the three students watched a classroom video-clip of the high school teacher and analyzed his instruction before the actual classroom visits. Furthermore, by "Let's Learn" program for students, the course was associated with a local community through the students and so that they could visit the teacher's classroom three times to observe his math classroom teaching. The students discussed the difference between their own mini lectures and the actual math classroom teaching to develop an understanding of what it entails to teach an actual math class. Third, the first author supervised the students' activities in the program including their report for it to bring out their findings to the class of the method course. We found out this method course provided the students with the experience of various aspects of actual math lesson as well as learning theories about the pedagogy for teaching for secondary school mathematics. We conclude that this course gives a model for the method course in mathematics education for secondary school mathematics.

• Journal of Korean Home Economics Education Association
• /
• v.7 no.1
• /
• pp.107-120
• /
• 1995

This study aims at seeking how to activate and operate vocational home economics curriculum efficiently. We collected data from school district offices in the nation and questionaries to 37 high school teachers in charge of vocational home economics, 30 teachers in charge of vocational course, 305 students of vocational school, and 135 students on vocational course for the recognition of and request for vocational home economics curriculum. Collected data were analysed by frequency, percentage, and X(sup)2, and SPSS/PC(sup)+ program are used for the statistical analysis. Followings are the outcomes of this study. 1. The number of classes in which vocational home economics is operated has been on the rise since 1986. As for curriculum of vocational high school, 79 classes for clothing, tourism, and childhood education are being operated in 8 schools. 2. Teachers acknowledge vocational training should keep complete and sustaining education and that it should aim ar conduction education which enables students to acquire technical knowledge and to seek a gob. Both teachers and students admit vocational home economics should be carried out so that vocational training can be combined with general education. 3. Teachers put more emphasis on its major field than that general field. As for laboratory classes, teachers complained about the financial lack, while students need for field practice for the purpose of opening the way for combing theory with practice and proposing for scientific study of industrial sites. As for the contents, students considered the technical course size appropriate and they though it is desirable that the ratio of practical class should be increased by more than 60% of that of the current class ratio.

• Korean Journal of Human Ecology
• /
• v.20 no.4
• /
• pp.759-775
• /
• 2011

The purpose of this research is to study university students' romantic experiences for this research, 1000 students participated by cyber lectures "marrige & families" and "sex & love". The results of this study are as follows: (1)Their first romantic experiences started in middle school(18.5%), high school(32.7%), or university(39.4%). Their first romantic experiences disappeared after one year. University students' first romantic experiences were universal and were made into a proximity principle. (2) University students' one-sided romantic experiences were 78%, but they loved someone senior to them or friends. They fell in love by attraction to character or appearance. University students' one-sided loving processes were made into friendship and the higher eye-level liking. (3) University students dated every day. They experienced the following sexual behaviors: kissing(90.2%), embracing(94.7%), or intercourse(34.7%.) Their dating life was made into a proximity principle. (4)University students experienced an emotional change from break-ups: solitude, longing, or regret, but their coping strategies were immersion in study or leisure, or meeting friends. They(70%) got over it and dated some body else.

• Korean Parent-Child Health Journal
• /
• v.6 no.2
• /
• pp.127-146
• /
• 2003

The purpose of this study is to investigate the seven-hour sexuality education program for senior high school girl students and apply it to them to find out how this program affects their sex-related knowledge, sexual attitudes, and the self-efficacy of sexual behavior practice. The ultimate goal of this study is that high school girl students are to prevent unwanted pregnancy, STD and AIDS, after attending this sexuality education program. A non-equivalent control group pretest-post test design was used for this study. The number of experimental group consisted of 80 girl students and the control group was composed of 80 girls, too. A total of 160 freshmen from two commercial girls' high schools were selected by a convenience sampling method. This study was carried out in commercial high schools located in Daejeon, Korea from July 15th to October 31st, 2002. To discover the need for sexuality education, the researcher surveyed with a pre-designed questionnaire to 160 girls from the two different commercial high schools. The sex education curriculum was developed on the basis of the need of high school girl students for sex education survey results and literature review and a teaching-learning planning model and health belief model. The experimental group was taught the sexuality education program for seven hours from October 19th to 23rd, 2002 and each period continued for 50 minutes. The SPSS(10.0) Windows statistics software was used to analyze the data, along with frequency, percentage, $X^2$-test, t-test, and paired t-test. The instruments' internal consistencies were tested by Cronbach's alpha coefficient. The results of this study were as follows: 1. The increment of sex-related knowledge score after seven hour sexuality education was significantly higher in experimental group (t=-10.88, p=.000). 2. The increment of sex-related attitude score after seven hour sexuality education was significantly higher in experimental group (t=-2.67, p=.009). 3. The increment of the practice of self-efficacy of sexual behavior score after seven hour sexuality education was significantly higher in experimental group(t=-4.95, p=.000). In conclusion, sexuality education programs based on high girl students' educational desire, characteristics of development, a teaching learning planning model, a health belief model were effective to improve sex-related knowledge, sexual attitudes and the self-efficacy of sexual behavior practice of commercial high school girl students. This result can contribute to expand the school nurse's role in the sex education area and to develop theory-based school health nursing.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.7 no.2
• /
• pp.53-59
• /
• 1983

The purpose of this study was to investigate the relationship between five aspects of clothing behavior and needs for exhibition and autonomy among high schoolgirls. Five aspects of clothing behavior were studied: fashion interest, clothing exhibition, attitudes toward the abolition of the school uniform and control of school dress. A questionnaire of 20 items prepared by Kahng, Lee, and Creekmore was used to assess fashion interest and clothing exhibition. Assessment of attitudes toward the abolition of school uniform and control of school dress was made with questions devised for this study and included several modified items from Kim's questionnaire. Preferences for fashion style were determined by line drawings representing current fashion and outdated fashion. The questionnaires were administered to 341 second year senior high school girls from three types of schools. Statistical analysis was performed using the correlation coefficient, chi-square test, ANOVA, The results were: 1) The need for exhibition was positively related to clothing exhibition and fashion interest, that is, students who had a higher need for exhibition were more interested in clothing exhibition and fashion. 2) The need for autonomy was positively related to attitudes toward the abolition of school uniform and control of school dress that is, students who had a higher need for autonomy wanted the abolition of school uniform and less control of school dress. 3) Fashion interest was positively related to preference for fashion style, that is, students who a higher fashion interest prefered fashinable styles in the selection of new clothes. 4) Scores of clothing exhibition and attitudes toward loosening of control of school dress were significantly different among three types of school. The orders from highest to lowest are following: single-sex preparatory, coeducational preparatory, vocational high school.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.15 no.1
• /
• pp.48-60
• /
• 1991

The purpose of this study is to analyze the pattern of human developmental growth with empirical anthropometric data for clothing construction. The sample was drawn randomly out of senior high school boys and girls in seoul urban area. The sample size was 424 boys and 301 girls between age 16 and 18. Dependent variables of this study were modified after extraction of common variables from raw data. 42 dependent variables were analyzed by the method of Duncan Test as Multiple Range Test among three age groups and T-Test between male and female of same age groups. The analysis of these data was carried with spss-x package by the computer installed in INHA University. The major findings can be summarized as follows. 1. In Duncan Test, female students between age 16 and 18 were not significantly different in the majority of dependent variables, but girth measurements and weight of 17 and 18 age groups were significantly different from that of 16 age groups. 2. In Duncan Test, male students were significantly different in the majority of the dependent variables, especially 33 variabls from 42 variables, among three age groups. 3. In T-Test, hip girth was only not significantly different between male and female and neck girth of the female students was only significantly larger than that of the male students.