• Title/Summary/Keyword: four classes

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The Effects of Portfolio Teaching on the Organization and the Quantity of Elementary Student' Science Concepts (포트폴리오를 적용한 과학 수업이 학생의 과학 개념의 조직과 양에 미치는 효과)

  • Lee, Su-Jung;Kim, Chan-Jong
    • Journal of the Korean earth science society
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    • v.23 no.8
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    • pp.659-665
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    • 2002
  • The purpose of the study is to investigate the effects of portfolio on the organization and the quantity of the students’ science concepts. Two fourth grade classes were selected from an elementary school in Pyungtaek-shi, Kyunggi-do, and one class is assigned to experimental group, the other control group. Experimental group received portfolio teaching, and control group received conventional instruction. The effects of portfolio teaching were investigated with students’ mind maps. Students participated had training to develop mind maps, and developed mind maps four times during learning two units, strata and fossils, and change by heat. Mind maps developed by students were scored and analyzed with SPSS. The class with portfolio instruction showed higher scores than control group. In conclusion, the portfolio teaching enhances the organization and the quantity of students’ science concepts.

A Study on the Fashion Item of the Symbolic Fashion Icons in the 20th Century (20세기 상징적 패션 아이콘에 따른 아이템 연구)

  • Lee, Eun-Sook
    • Journal of the Korea Fashion and Costume Design Association
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    • v.12 no.1
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    • pp.89-101
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    • 2010
  • The purpose of this study was to investigate the fashion item of the symbolic fashion icons in the 20th century. The symbolism of fashion icons was grouped into four classes according to the influence of a social-cultural change. 1. Icons between dream and reality: A dreary emotion that was caused by material richness has a longing for an ideal image. A typical style was Art Nouveau style, which pressed into a grotesque S-bend. While as the world placed on a economic reconstruction after World War I, rational fashion icon which pursued more function and simplify than cumbersome style and complexity came out. 2. Icons between solid and liquid: A solid icons was connected with a mode of female body during World War 1. This extremely stylized female figure. Flowing fabrics enveloped the stylized female figure and they brought a liquid icons into relief. 3. Icons between uniformity and variety: At a time when uniformity was appeared strongly within 20th century is during World War II and about 1940-1950. The uniformal icon was classified into uniformity by uniform and by mass production. A repugnance for the uniformity and imitation of fashion was tried a new fashion style. It could be called with the various of fashion icon. 4. Icons between social secession and rediscovery: In 1950-1960, 1970-1990, and the end of 20th century, the advent of the young culture was born a consumer who newly breaks in fashion. It could be included within the domain of social secession icon. While the rediscovery of fashion icon was associated with experimental new fibers, leotard, suitable replacement for wool or acrylic knit, silk that could stretch in any direction, new fabrics that were transparent, took color beautifully, and could be painted, tie-dyed, or embroidered.

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Instructional Effects of a Problem Solving Model on Students' Achievement, Science Process Skills, and Perceptions of Science Activities (문제 해결식 교수 방법이 학생의 성취도, 과학 과정 기술, 과학 활동 인식에 미치는 효과)

  • Noh, Tae-Hee;Kim, Dong-Youn;Kim, Hye-Kyung;Hong, Eun-Kyung;Kang, Suk-Jin;Chae, Woo-Ki;Noh, Suk-Goo
    • Journal of The Korean Association For Science Education
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    • v.17 no.1
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    • pp.45-53
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    • 1997
  • The purpose of this study was to investigate the instructional effects of a problem solving model on students' achievement, science process skills, and perceptions of science activities. The problem solving model was developed on the basis of the SSCS (Search, Solve, Create, Share) problem solving model while considering Korean educational situations under a national curriculum. The model developed is composed of 4 stages; identify, solve, create, and share. In this research, the treatment and control groups (6 classes) were selected from a middle school in Seoul and taught about the separation of mixture for four weeks. Prior to instruction, the Group Assessment of Logical Thinking and the Learning Approach Questionnaire were administered, and their scores were used as covariate and blocking variable, respectively. During instruction, classroom observations for each group were conducted with a researcher-made checklist. Immediately following the instructions, students' achievement, science process skills, and perceptions of science activities were measured by a researcher-made achievement test, the Middle Grades Integrated Science Process Skills Test(MIPT), and the Perceptions of Science Activities Questionnaire, respectively. The results indicated that students in the treatment group achieved significantly better than those in the control group. Although students in the treatment group were found to use more science process skills correctly during their science activities, the MIPT scores of the treatment group were not significantly higher than those of the control group. No interaction with students' learning approach was found for both students' achievement and science process skills. On the questionnaire of students' perceptions of science activities, the treatment group showed more positive perceptions and interest than the control group. Educational implications are discussed.

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Inductive Influence of Algorithmic and Conceptual Problems (수리 문제와 개념 문제 사이의 유도 효과)

  • Noh, Tae-Hee;Kang, Hun-Sik;Jeon, Kyung-Moon
    • Journal of The Korean Association For Science Education
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    • v.24 no.2
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    • pp.320-326
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    • 2004
  • This study investigated whether algorithmic problem solving and conceptual problem solving influenced each other or not. Four classes of 12th grade (N= 112) that are equal in prior achievement were randomly assigned to group AC (Algorithmic-Conceptual problem) and group CA (Conceptual-Algorithmic problem). Students of group AC solved the conceptual problems after learning the related algorithmic problems, and those of group CA solved the same problems in reverse order. The results revealed that learning the algorithmic problems improved students' ability to solve the related conceptual problems, but learning the conceptual problems did not help students solve the related algorithmic problems. Regarding the confidence on problem solving, learning the algorithmic problems had little effect on the related conceptual problems. Learning the conceptual problems also had little effect on students' confidence on solving of the related algorithmic problems.

The Influences of Role-Playing Analogy in Chemistry concept Learning (화학 개념 학습에서 역할놀이 비유 활동의 효과)

  • Noh, Tae-Hee;Byun, Soon-Hwa;Jeon, Kyung-Moon;Kwon, Hyeok-Soon
    • Journal of The Korean Association For Science Education
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    • v.23 no.3
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    • pp.246-253
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    • 2003
  • This study investigated the influences of role-playing analogy upon students' scientific conceptual understandings, application abilities, retentions of conception and application, and learning motivation. Four classes of 7th grade at a middle school in Seoul were assigned to control and treatment groups, and taught about 'motion of molecules' for 4 class hours. For the Treatment group, role-playing analogy instruction was used. The traditional instruction was used for the control group. Data analysis indicated that the scores of the treatment group were significantly higher than those of the control group in the tests on the conception, the retention of application, and the confidence. In the tests of the application, attention, and relevance, there were significant interactions between instruction and student' gender. Both female and male students in the treatment group scored significantly higher than those in the control group in the application test. In the case of attention and relevance tests, male students in the treatment group scored significantly higher than those in the control group. Educational implications are discussed.

The Differences in Foot Type According to Major in Left and Right Foot for Female College Students (전공과 좌우 양 발에 따른 여대생의 발 유형 분석)

  • Yi, Kyung-Ock;Kim, Nam-Hee;Kim, You-Ryun
    • Korean Journal of Applied Biomechanics
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    • v.22 no.2
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    • pp.229-236
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    • 2012
  • The purpose of this study is to analyze the differences in foot type of female college students according to academic major in both feet. The subjects for this study were 216 female students who took liberal arts classes in Seoul. Dependent variables were students' field of study -specifically whether or not they majored in physical education. Analysis of students' foot type and Malalignment Syndrome were measured using Resting Calcaneous Stance Position (RCSP). There were five categories for RCSP angle: Severe Pes Planus (< $-5^{\circ}$), Pes Planus ($-3^{\circ}{\sim}-4^{\circ}$), Pes Rectus (${\pm}2^{\circ}$), Pes Cavus ($+3^{\circ}{\sim}+4^{\circ}$), Severe Pes Cavus (> $+5^{\circ}$). ${\chi}^2$ analysis was used for statistical analysis. RCSP for all subjects (432 feet) occurred at the following frequency: Pes Planus(43.9%), Pes Rectus(43.8%), and Pes Cavus(12.3%). These levels were different for physical education majors, with Pes Planus at 42.6%, Pes Rectus at 49.4%, and Pes Cavusat 8.0%. Non-physical education majors exhibited Pes Planus at 45.0%, Pes Rectus at 39.9%, and Pes Cavus at 15.1%. 15.3% (33 subjects) of all students had Malalignment Syndrome. In conclusion, 56.2% of female college students had a foot deformity. There was nearly four times more Pes Planus than Pes Cavus. According to these results, exercise can be prescribed to alleviate foot deformities, especially supination. Severe pronation and supination problems appeared less amongst students not majoring in physical education. Thus, although exercise might be one cause of foot deformity, it can also help resolve problems with over-supination. Further study will be needed to understand and resolve the specific mechanism of over-supination.

Analysis of the Factors Related to Smoking and Drinking in Health Science Majors (보건학 전공 대학생의 흡연 및 음주와 관련된 요인 분석)

  • Nam, Young-Hee
    • The Journal of Korean Society for School & Community Health Education
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    • v.17 no.1
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    • pp.75-87
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    • 2016
  • Objectives: The purpose of this study was to examine the relationships of the drinking and smoking behaviors of health science majors to their knowledge of and attitude toward drinking and smoking in an effort to determine the influential factors for their drinking and smoking. Methods: The subjects in this study were 380 selected health science majors in two four-year universities and a three-year college that were respectively located in Seoul and Chungcheong Province. A survey was conducted with structured questionnaires from September 1 to 15, 2015. As for statistical data analysis, a statistical package SPSS 18.0 was utilized. Results: There were significant differences between the male and female students in smoking(p=0.000), and no gender differences were found in drinking(p=0.754). The male students who both drank and smoked outnumbered the female students who did, and the female students who only drank outnumbered the male students who did. And the differences were statistically significant(p=0.000). There were statistically significant differences according to smoking and drinking in relationship with professors(p=0.020), peer relationship(p=0.035), drinking attitude(p=0.033, smoking knowledge(p=0.008) and smoking attitude (p=0.006). The factors that affected drinking were religion and the drinking of fathers, and the factors that exerted an influence on smoking were gender, academic year, form of residence, religion and the smoking of family. Conclusions: A lot of temperance and antismoking education programs should be provided for college students in their early school years in the form of peer teaching and in association with their major classes. Besides, they should be encouraged to join clubs related to temperance and antismoking, and professors should try to facilitate their relationship building.

Drug research and development tend to hyperlipidemia (이상지질혈증과 치료제 연구개발 경향)

  • Seol, In-Chan
    • Journal of Haehwa Medicine
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    • v.18 no.2
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    • pp.1-12
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    • 2009
  • Most of the cholesterol is synthesized by liver in the body while about one of third is taken via dietary. The main functions of cholesterol is to protect membranes in cell surface, avoid the arterial bleeding by hypertension, and prolong the life of erythrocytes, and so on. However, overload of cholesterol leads to arteriosclerosis associated with leading death cause. Lack of physical activity, emotional and environmental stress, and low intake of protein or vitamin E induce the unbalance between HDL- and LDL-cholesterol so become a basis of ischemic disorders in heart, brain and elsewhere in the body. So far, four major classes of medications for hyperlipidemia are HMG-CoA reductase inhibitors (statins), bile acid sequestrants, nicotinic acid, and fibric acids. The statins can lower LDL and levels triglyceride, but may induce myopathy and an elevation of liver enzyme levels. The bile acid sequestrants lower LDL levels and raise HDL levels with no effect on triglyceride levels but side effects of gastrointestinal (GI) distress, constipation, and a decrease in the absorption of other drugs. Nicotinic acid and fibric acids lower LDL and triglyceride levels with showing flushing, hyperglycemia, hyperuricemia, GI distress, and hepatotoxicity dyspepsia, gallstones, myopathy, and unexplained noncardiac death as adverse effects. Above western drugs lower cholesterol by 15 to 30% while all have notable adverse effects. In traditional medicine, hyperlipidemia is regarded as retention of phlegm and fluid disease. Etiology and pathogenesis of hyperlipidemia is basically based on Spleen-Deficiency and Phlegm-Stagnation, accumulation and stasis of -heat, and Qi & blood stagnation induced by Phlegm-damp, water-dampness, and blood stasis. Thereby, strengthening Spleen and dissolving Phlegm, clearing away heat and diuresis, and supplementing Qi and activating blood circulation are commonly used therapeutic methods for hyperlipidemia. The traditional herbal medicine, have been used for patients with CVA, hypertension or hyperlipidemia in Oriental hospital or Oriental clinic. The lock and key theory is used to develop most of western medicine, however many diseases are caused by mixed factors in body-complex system. We expect that Oriental pharmacological theory could be newborn as a novel drug showing high advantage of blood levels of lipidsand QOL of performance without side effects.

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A Study on Analysis of the Effectiveness of e-Learning in an Industrial Technology Practical Retraining (산업기술 실무 재교육에서 이러닝 적용 효과 분석)

  • Choi, Mi-Na;Roh, Hye-Lan
    • Journal of Engineering Education Research
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    • v.14 no.1
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    • pp.3-10
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    • 2011
  • The purpose of this study is to analyze the effectiveness of applying e-learning in industrial technology practical retraining. We have conducted a questionnaire survey for 177 subjects in 23 courses of four types of industry. Also, we have performed focus group interviews to analyze the problem and the reason for taking e-learning classes. A satisfaction measurements of the contents area(average 3.78 out of 5.0) and system area(average 3.70) were relatively high. However, the satisfaction measurement of the management area(average 3.0) was relatively low. The satisfaction measurement of learning area(average 3.68) was relatively high, but that of the behavior area(average 3.51) was on a normal level. In conclusion, an application of e-learning showed the effect on extending educational chances and spreading the technology in highly technological fields. We suggest that e-learning should be consistently and specifically expanded.

Environmental Factors and Population Density of Brackish Water Clam, Corbicula japonica on Narndae Stream in Yangyang, Gangwon (양양 남대천 기수재첩, Corbicuza Japonica의 서식환경과 밀도)

  • 김완기;이채성;이정용;백국기;허성범
    • Journal of Aquaculture
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    • v.15 no.1
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    • pp.1-6
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    • 2002
  • Hydrological factors prevailing in the Namdae stream were as follows : temperature = -0.2~$26.8^{\circ}C$, salinity = 0.50~3.21$\textperthousand$, DO = 5.21~8.13 ppm, $PO_{4}-P$ = ND~1.37 ppm, $NO_{2-}$ = 0.10~0.81 ppm, COD = 1.53~2.82 ppm, $H_2 S$ = ND~0.0012 ppm and IL = 0.85~1.36 %. Sediment was typical, gravelly sand or sand with very good sorting value ranging from 0.53 to 1.77$\varphi$. Population density of the clam C. japonica ranged from 2 to 464/$m^2$. The clams were divided into four size classes, based on shell length of small (0~10 mm), medium (10~20 mm), large (20~30 mm) and largest (>30 mm), and were encountered at the frequency of 3.2, 50.4, 43.3 and 3.1 %, respectively.