• East Asian mathematical journal
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• 제33권2호
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• pp.217-233
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• 2017

This study expects that Team Based Project Learning can act positive role to improve pre-service elementary teachers' teaching competence from previous studies. So designing and executing Team Based Project Learning program, I can provide some suggestions to the teaching method for teacher training education. In this study, Team Based Project Learning focuses on the use of history of mathematics in school mathematics. Also from organizing the team to evaluation, I conduct team activity systematically both inside and outside the classroom. The result of this study shows that pre-service elementary teachers' teaching competence has improved and I could identify the positive response about the value of using the history of mathematics and effect of Team Based Project Learning in mathematics learning.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제15권3호
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• pp.229-250
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• 2011

The Mathematics Teaching Efficacy Beliefs Instrument is one of the most popular instruments used to measure elementary preservice teachers' efficacy beliefs in mathematics teaching. The instrument was, however, developed in the United States and is perhaps not appropriate for other cultures. In this study, the instrument was translated into Korean and carefully reviewed by Korean mathematics teacher education professors. Analysis of the review indicated that eight out of the 21 items were appropriate while the others needed to be revised. Items were identified as inappropriate due to awkwardness, multiple meanings, tense disagreements, and vagueness. These items were modified to better fit the Korean context. The instrument was revised with two versions: one for elementary and the other for secondary pre service teachers.

• 대한가정학회지
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• 제39권1호
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• pp.221-232
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• 2001

The purpose of this study was to develop a scale for evaluation of preschool children's peer competence and to examine its validity and reliability. The 15 items of the preliminary scale were completed by teachers, and peer rating scale for assessment of peer acceptance was administered to 365 children 5 to 6 years of age. The methods for data analysis included item analysis, factor analysis for construct validity, Pearson correlations between teacher's ratings of peer competence and children's ratings of peer acceptance for concurrent validity, and Cronbach's u for reliability. The 15 items of the scathe were found be satisfactory in terms of item response distribution and item discrimination. Factor analysis revealed that a 3-factor solution was the best fit: sociability, prosocial behavior, leadership in peer relations. Correlations between teacher's ratings and children's ratings were as significant. Cronbach'so ranged from .88 to .93 for three subscales and .93 for the total scale. It was concluded that the psychometric properties of the peer competence scale in general were acceptable for use.

• 아동학회지
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• 제23권4호
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• pp.137-152
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• 2002

In response to a growing trend toward downward escalation of public school curriculum, the present study surveyed so-called extracurricular activities in kindergartens and analyzed teacher's perception of these activities. Questionnaires were mailed to 1300 private kindergartens and 1116 responses were received. Major findings were that over 89% of the respondents reported doing extracurricular activities in their kindergartens, mostly using 3-4 different kinds of special activities. The 3 most highly ranked lessons in order of frequency were English, art and physical activity. Whole group time was most often used for extracurricular activities. Kindergarten teachers were concerned with the qualifications of teachers for these activities. Teachers of these extra activities usually have no specialized training or supervised experience working with 3-through 5-year-old children.

• 과학교육연구지
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• 제39권1호
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• pp.113-131
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• 2015

이 논문은 중학교 지구과학 수업에서의 교사-학생 간 교실 상호작용 유형을 분석하여 지구과학 전공 교사와 비전공 교사의 담화 유형 차이를 확인하고, 교사의 질문 유형과 담화 양상 사이의 관계를 알아보는 것을 목적으로 하였다. 이를 위해 서울의 3개 중학교에 근무하는 4명의 과학 교사 수업을 연구 대상으로 하였으며, 두 단계로 자료를 분석하였다. 첫 번째 단계로 교사와 학생의 상호작용을 Mortimer & Scott(2003)의 틀을 사용하여 담화 유형을 범주화 하였다. 두 번째 단계에서는 교사의 질문 유형과 담화 양상 사이의 관계를 알아보기 위해 McNeill & Pimentel(2009)의 분석틀을 이용하여 교사의 질문을 4가지 유형의 질문으로 분류하여 분석하였다. 연구 결과, 중학교 지구과학 수업에서 모든 교사가 상호작용적이며 권위적인 담화를 가장 많이 사용하였다. 그리고 담화 양상은 교사의 질문 유형 보다는 학생의 반응에 대한 피드백과 더 관계있는 것으로 나타났다. 즉, 교사가 학생의 반응에 긍정적인 수용의 태도로 지연 피드백을 사용할 때 대화적 담화가 더 잘 나타났다.

• 한국과학교육학회지
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• 제26권2호
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• pp.212-221
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• 2006

이 연구의 목적은 Thinking Science의 모둠 활동에서 나타나는 교사들의 도움 특성과 교사들의 도움 특성에 따른 학생들의 반응 특성을 알아보는 것이었다. 연구를 위해 초등학교 5학년 24명과 중학교 1학년 24명을 선정하여 TS 활동을 처치하였으며, 그 중 학생들의 논의가 비교적 활발했던 활동 4와 6에 대해 초 중학교 각각 2모둠의 언어적 상호작용을 분석하였다. 활동 처치 전에 과학적 사고력 검사를 통해 학생들의 인지수준을 확인하였으며, 이에 따라 이질집단으로 모둠을 구성 하였다. 각 모둠마다 도움 교사를 두었으며 TS 활동의 적용과정에서는 모둠 내 상호작용을 강조하였다. 교사들의 도움은 단순 확인 질문의 활용이 높았으며 메타질문의 활용은 부족하였다. 또한 교사의 개인적인 성향이나 교직 경험, 활동에 대한 숙지 정도에 따라 교사들의 도움 특성이 다르게 나타났다. 단순 확인 질문이 많고 교사의 개입이 많으면 학생들의 논의는 자발적이지 못하고, 메타질문의 활용과 피드백이 고르게 활용된 교사의 경우 학생들의 논의과정 요소의 활용 또한 다양하게 나타났다. 그러므로 과학적 사고력을 향상시키기 위한 TS 활동을 처치할 때 처치의 효과를 높이기 위해서는 TS 프로그램의 내용과 TS에서 요구되는 전략뿐만 아니라, 교사들이 학생들과 상호작용하는데 있어서 열린 교수-학습 분위기 속에서 학생들의 사고를 자극시켜 그들 자신의 아이디어를 제안하게 하고 또한 그들의 의견을 정당화 할 수 있는 기회를 제공할 수 있는 교수 기술을 배울 수 있는 교사 연수를 실시할 필요성이 있음을 시사한다.

• 한국게임학회 논문지
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• 제17권3호
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• pp.71-82
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• 2017

이 연구는 학교 장면에서 교사들의 게임 인식 유형과 학생 게임 이용 수용도의 관계를 이해하기 위해 수행되었다. 전국 초 중 고등학교 교사와 상담교사 및 전문 상담사 250명을 대상으로 설문조사한 결과 네가지 게임 인식 유형은 성별, 연령, 게임 경험 유무, 게임에 대한 태도, 게임에 대한 대응, 게임이 학생의 학업에 미치는 영향 인식에서 차이가 있었다. 교사의 게임 인식 유형에 따라 학생 게임 이용 수용도를 비교한 결과 '관리/감독의 필요성', '적극 활용의사', '관심과 확인', '부적응 대체활동으로 인정' 에서 유형간 차이가 있었다. 그러나 '수용 효능감'에서는 모든 유형이 낮은 수준을 보였다. 끝으로 학교 현장에서 학생 게임 이용에 대한 교사의 수용도를 높이기 위해 어떠한 지원을 제공하는 것이 효과적일지 논의하였다.

• 대한영양사협회학술지
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• 제24권1호
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• pp.92-107
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• 2018

The purpose of this study was to investigate the status of school nutrition education and changes in perception of nutrition teacher's job in order to determine the need for redesign to achieve their ideal job. The questionnaire was distributed to 1,550 nutrition teachers, and a total of 1,487 usable data were collected with a 96% response rate from August to December 2015. Statistical data analysis was completed by using SPSS/Win 21.0 for descriptive analysis. The results were as follows: 45.5% of nutrition teachers periodically implemented nutrition education classes, and 32.7% of responses used creative activity times for nutrition and dietary life education. Various topics were taught such as strategies to improve dietary habits, choice of healthy foods and nutrition labeling, nutrition information, food safety, and environmental problems, etc. Current performance ratios of nutrition teacher's duties and tasks were as follows: nutrition operation 31.3%, foodservice hygiene and safety 28.0%, nutrition management 22.7%, nutrition and dietary life education and counselling 11.6%, and professional development 6.4%. Opinions about ideal job performance of nutrition teachers were investigated to determine needs for job redesign. Two in nutrition management duty tasks and four foodservice management duties duty tasks were reduced. On the other hand, another two nutrition management duty tasks and three nutrition and dietary life education and counselling tasks were increased compared to current job performance.

• Advances in nano research
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• 제15권6호
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• pp.495-511
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• 2023

In this research, the impact of micro-silica, nano-silica, and polypropylene fibers on the fracture energy of self-compacting concrete was thoroughly examined. Enhancing the fracture energy is very important to increase the crack propagation resistance. The study focused on evaluating the self-compacting properties of the concrete through various tests, including J-ring, V-funnel, slump flow, and T50 tests. Additionally, the mechanical properties of the concrete, such as compressive and tensile strengths, modulus of elasticity, and fracture parameters were investigated on hardened specimens after 28 days. The results demonstrated that the incorporation of micro-silica and nano-silica not only decreased the rheological aspects of self-compacting concrete but also significantly enhanced its mechanical properties, particularly the compressive strength. On the other hand, the inclusion of polypropylene fibers had a positive impact on fracture parameters, tensile strength, and flexural strength of the specimens. Utilizing the response surface method, the relationship between micro-silica, nano-silica, and fibers was established. The optimal combination for achieving the highest compressive strength was found to be 5% micro-silica, 0.75% nano-silica, and 0.1% fibers. Furthermore, for obtaining the best mixture with superior tensile strength, flexural strength, modulus of elasticity, and fracture energy, the ideal proportion was determined as 5% micro-silica, 0.75% nano-silica, and 0.15% fibers. Compared to the control mixture, the aforementioned parameters showed significant improvements of 26.3%, 30.3%, 34.3%, and 34.3%, respectively. In order to accurately model the tensile cracking of concrete, the authors used softening curves derived from an inverse algorithm proposed by them. This method allowed for a precise and detailed analysis of the concrete under tensile stress. This study explores the effects of micro-silica, nano-silica, and polypropylene fibers on self-compacting concrete and shows their influences on the fracture energy and various mechanical properties of the concrete. The results offer valuable insights for optimizing the concrete mix to achieve desired strength and performance characteristics.

• 한국학교보건학회지
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• 제23권1호
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• pp.63-70
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• 2010

Purpose: To identify the need to reform in the crisis response of Health Teacher, School Nurse, in elementary school during epidemic outbreak of influenza H1N1. Methods: 139 elementary health teachers, school nurse, in seoul elementary school responded in the questionnaire, and we analysed by using frequency and percent, t-test, and paired t-test. Results: The Job status became 121% more 'during influenza H1N1 (flu) outbreak' than Job status of 'before outbreak'. The proportion of the flu-related duty among their daily workload was up to 77.5%. The administration-related workload of the flu-related duty was 30.8%. and students' health assessment including temperature measurement 18.7%. Furthermore, an impediment of usual daily work due to an increaed flu-related workload was 95.7%, and no alternative plan such as disposition of assistant labor force was 86.1%. Especially, an impediment of health education was 61.0%, so the major concern was the loss of health education. We compared average scores (a five-point Likert scale) of health teachers' work motivation, exhaustion, work relationship and Job management of 'during' with 'before' flu-outbreak. The difference range of 'during' minus 'before' work motivation score was from -0.4 points to -0.9; work exhaustion range from 1.8 to 1.9; the difficulty of relationship between students, school personnel, parents of students, and health teachers from 1.4 points to 1.3 points; and the consideration of changing Job, taking time off from the Job and retirement from 1.4 to 1.6 points. Conclusion: The health teachers had a heavy workload due to flu-outbreak. They also experienced the impediment of usual work implementation. However, there was a shortage of alternative plan such as disposition of an assistant labor force. Under their Job status like this, the health teachers' motivation score was decreased and work exhaustion was increased. Furthermore, they had a lot of relation difficulty with students and school personnel. Therefore, we suggested that in contrast to the usual Job status, there is a need to have a prepared response during school crisis like flu-outbreak such as improved response system in seoul metropolitan education office, simplification or dispersion of administrative work, and temporary call-center for simple inquiries or advices.