• Journal of Korean Elementary Science Education
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• v.34 no.4
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• pp.372-381
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• 2015

Mathematics and science are very closely related. Among the science areas, physic is strongly linked with mathematics. As the related mathematics skills were alloted later than the science contents in the national curriculum, students often suffer from science classes. Accordingly, an opinion have been claimed to teach the related mathematics skills prior to the science classes. However, it would be hard to arrange all science and mathematics contents in order. Instead of that, in this research, we taught students mathematics contents that are crucial for learning speed through science classes. We called that teaching strategy an integrated science and mathematics class. Then, we examined students' achievement in science as well as skills of mathematics to know the effectiveness of the strategy. We found that the average mathematics score of the whole class went up meaningfully. We also found that their science achievement was above than basic level. Moreover, the homeroom teacher of the students observed 3 aspects which showed the students were better than previous students. Finally, we divided the students into 4 groups by their science and mathematics achievement score and interviewed each group. As a result, we knew that interesting and confidence in science and mathematics quite exerted influence on their achievement.

• Journal of The Korean Association of Information Education
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• v.17 no.4
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• pp.487-496
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• 2013

This study examined the effects of STEAM program using authoring tool on elementary school students' creative personality and science-related attitude. For this study, after analyzing curriculum from the first term of 6th grade and extracting the learning elements and topic, I developed lesson plans and App contents. As a result of applying STEAM program using Storyline to 6th grade elementary school class. dividing two groups-experimental group, comparison group-for this study, tested t-test, the test result of experimental group got a meaningful result statistically. There was positive effect on improving elementary school students' creative personality and science-related attitude.

• Journal of Korean Elementary Science Education
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• v.40 no.2
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• pp.239-252
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• 2021

The purpose of this study is to develop an evolutionary STEAM education program based on the brain and to analyze its effects on scientific interest and scientific creativity of elementary school students. Four different topics based on four scientific fields (Physics, Chemistry, Biology and Earth Science) were derived from the science textbook under the 2015 revised curriculum to build a brain-based evolutionary STEAM education program. The research subjects were 90 fourth graders of S-elementary school located in Gyeonggi Province, Korea and they were divided into an experimental group of 45 students and a comparative group of 45 students. The main findings of this study are as follows. First, according to the independent samples t-test of scientific interest, no statistically significant difference were found between the two groups, but the brain-based evolutionary STEAM education had meaningful effect on improving 'interest in scientific learning' and 'anxiety about scientific learning'. Second, according to the paired samples t-test of scientific interest, the experimental group had significantly improved 'interest in science' but on the other hand, there was no effect on the comparative group. Third, scientific creativity and originality of the experimental group were significantly higher after the class than that of the comparative group. Fourth, although there were some significant differences between the two groups in scientific creativity after the class, both groups had improved scientific creativity between the results of pre and post test. Based on these results, we discuss implications for science education and STEAM education research.

• Journal of The Korean Association For Science Education
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• v.34 no.1
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• pp.10-20
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• 2014

This study compares the perceptions of elementary gifted child and science teacher in a science class for the gifted. In order to explore the research problem, students and teachers answered a written semi-structured questionnaire and participated in interviews regarding the gifted science class. The data was collected and analyzed. Science teachers recognized the characteristics of a good science class, especially in terms of educational content and teaching methodology. First, they suggested promoting inquiry skills, presenting a challenging task in atypical topic selection, student-centered curriculum, and controlling the pace of learning to recognize individual differences. Second, in terms of the science class skills and attitudes category, teachers recommended raising mutual satisfaction through vigorous interaction within a permissible atmosphere. Finally, science teachers need to strive for continued professional growth. Gifted children, meanwhile, want to investigate a wide range of topics without time constraints. Additionally, they may have to explore challenging topics further. They prefer to act like scientists in that they enjoy group activities, communication and cooperation. In particular, they want to be evaluated by others in a totally embedded assessment. Gifted children also expect teachers to understand the life circumstances and needs of the students. In addition, they asked for teachers to respect individual experiments and to show them how to safely use new equipment or research methods. As a result, gifted children and science teachers have to recognize the differences of opinion concerning a good science class for the gifted. This study can help formulate strategies to establish quality management of materials in gifted science classes.

• Journal of Korean Elementary Science Education
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• v.41 no.3
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• pp.521-537
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• 2022

State curiosity and state anxiety in the science learning have a great influence on academic performance and achievement. Since the levels of state curiosity and anxiety can change at any moment, it is essential to identify the levels of student's state curiosity and state anxiety throughout the course of science learning. Accordingly, we assessed the changes in state curiosity and anxiety levels sensed by 5th- and 6th-grade elementary school students depending on their exposure to the violation of expectation. To this end, we classified science learning into three situations: confronting a scientific task, checking the result, and learning science concepts. As a result, there was no significant difference in state curiosity level of the nVOE group who confronting the result consistent with their expectations in checking the result after confronting a scientific task, but the state curiosity level of the VOE group who facing violation of their expectation increased. In the VOE groups, there was no significant change in the state curiosity level of the VOE-R group who correctly inferred the reason for the result, but that of the VOE-FR group who could not correctly inferred increased. The state anxiety levels of the VOE and nVOE groups decreased after checking the result of the task. The state anxiety level also declined in the VOE-R group. In contrast, there was no significant change in state anxiety level of the VOE-FR group. In learning science concepts of the result after checking the result, the state curiosity of the VOE, nVOE, and VOE-FR group all faded. No significant change was observed in the state anxiety level of the nVOE group, whereas the VOE, VOE-R, and VOE-FR group presented a decreased state anxiety. This study discusses the educational implication of these findings and its outcomes are expected to broaden the understanding of emotional states of students in science learning.

• Journal of Science Education
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• v.34 no.1
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• pp.84-92
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• 2010

We analyzed learning materials from web sites of the Ministry of Environments, the Ministry of Land, Transport and Maritime Affairs and Korea Energy Management Corporation to help people to develop and utilize web-based multimedia teaching materials. The contents of web-based multimedia teaching materials for environmental educations were generally concentrated in 304 cases of natural environments (22.1%), 250 cases of environmental contaminations (16.5%) and 187 cases of environmental preservation plans (12.4%). It did not significantly deviate from traditional teaching-learning contents being conducted focusing on environmental pollutions of the past. The types of web-based multimedia teaching materials for environmental educations were 934 cases of teaching plans (61.8%), 156 cases of documentaries (10.3%) and 128 cases of e-text information (8.5%). The web-based multimedia teaching materials by school-levels showed that there were 796 for primary schools (35.3%), 588 for middle schools (26.1%) and 320 for high schools (14.2%). It also showed that environmental education with similar contents were provided even in advanced schools. Therefore, it is believed that there needs development of various types of teaching materials while the fields of environmental education contents are covered with connectivity according to school-levels.

• Journal of Science Education
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• v.40 no.2
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• pp.116-130
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• 2016

The purpose of this study was to investigate the difficulties of science classes experienced by newly appointed elementary school teachers in terms of science content knowledge and teaching method, and to suggest some implications for their effective adaptation. We recorded science lessons conducted by 3 beginning elementary school teachers with less than 5 years experience and also analyzed their classes and interview materials. The results were as follows. First, difficulties that they experienced in science content knowledge was the possession of scientific errors or misconceptions, the lack of awareness and confidence in scientific concepts and principles, and the possession of negative concept about learning materials. Second, difficulties that they experienced in teaching method was the absence of reorganization of the textbook contents, using closed questions, one-sided instructions and explanations by teacher, the application of incomplete analogy, and the lack of understanding about experiment activities. The implication from this study is that beginning teachers need to be provided with curriculum oriented in experiment at teachers college and to participate in various types of educational opportunities.

• 한국지구과학회:학술대회논문집
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• 2005.09a
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• pp.269-275
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• 2005

중등 교육의 질을 확보하기 위한 가장 핵심적인 변인은 교사이며 교사의 자질 향상과 전문성 개발은 교육에 있어 중요한 화두이다. 교사의 전문성은 무엇보다도 교사의 가르치는 능력에서 확보되어야 하며 교과 내용 지식의 확보가 이를 위한 첫걸음이라고 할 수 있다. 본 연구에서는 수업과 심층면담에서 드러나는 초임 교사의 내용 지식(knowledge), 실천 행위(practice), 의미 이해 전략(sense-making strategy)을 분석하여 교사의 과학 내용에 대한 전문성을 파악하는 것을 목적으로 한다. 이를 위해 수도권의 중등학교에서 근무하는 여섯 명의 중등 초임 과학교사를 대상으로 각각 두 차례의 수업 관찰과 구조화된 면담, 한 차례의 우선순위 면담을 실시하였으며, 미시건 주립대학의 Knowles팀에서 개발한 분석틀을 사용하여 질적으로 분석하였다. 본 연구의 결과는 다음과 같다. 첫째, 초임 교사들은 그들이 지향하는 교사상에 따라 과학 교수 활동에 대해 다양한 의도를 가지고 있었으며 비전공 교과의 과학 내용 지식에 대해서는 다소 어려움을 표현하고 있었다. 둘째, 연구에 참여한 교사들은 대체로 교과서에 의존하여 교육과정에서 제시한 내용과 교과서에 제시된 지도 방법에 크게 의존하여 수업을 진행하고 있었으며 교과서 수준의 개념을 중심으로 나열하는 방식을 주로 사용하였다. 다만, 교사가 스스로 재구성한 내용을 바탕으로 자신의 내러티브로 이끌어가려는 시도가 드러나기도 하였다. 셋째, 학생들의 내용 이해를 돕기 위하여 중요한 과학적 개념을 강조하고 그러한 개념을 반복하는 전략을 주로 사용하였다. 그러나 일부 초임 교사의 사례에서는 적절한 비유와 예시를 도입하려는 시도가 발견되기도 하였다. 한편, 연구에 참여한 초임 교사들은 모두 전문성 개발을 위한 노력이 필요하다고 인식하였으며 교사 양성 과정에서 교직과 관련하여 실제적인 도움을 줄 수 있는 프로그램 개발의 필요성을 주장하였다.주로 나타났으며 우리나라 교육과정수업에서는 DC-DP DP-AD맥락의 반성적 탐구가 나타났다. 정리활동에서 우리나라 교육과정은 반성적 교육과정보다 자료 맥락의 영역개념을 더 자주 이용하고 다양한 맥락의 반성적 탐구가 나오고 있으며, 이는 우리나라 교육과정의 학습지의 활동이나 문제는 학생들에게 익숙하고, 자료 패턴을 가지고 행동결정으로 연결짓는 활동이 명확히 제시되었기 때문이라고 판단된다. 두 그룹의 상호작용 특징에 따른 반성적 탐구의 성향의 차이는 도입단계에서 그룹의 특징과 상관없이 A-AD, AD-SR맥락의 반성적 탐구가 나왔으며 전개와 정리단계에서는 N그룹에서는 DP와 관련된 의미 있는 반성적 탐구가 나오는 반면 M그룹에서는 이러한 맥락의 반성적 탐구는 아주 드물게 나타나며, GN과 관련된 행동결정이 자주 보이고 있었다. 정리활동시 주로 하는 기록 활동에서 N그룹에서는 다양한 맥락에서 반성적 탐구를 하고 있는 것에 비해 비교 그룹에서는 서로 견제하고 확인하는 상호작용의 특징에서 나타나는 AD-SR맥락의 반성적 탐구가 자주 나타났다. 반성적 탐구 척도 두 그룹을 비교 했을 때 CON 상호작용의 특징이 낮게 나타나는 N그룹이 양적으로 그리고 내용적으로 더 의미 있는 반성적 탐구를 했다용을 지원하는 홈페이지를 만들어 자료 제공 사이트에 대한 메타 자료를 데이터베이스화했으며 이를 통해 학생들이 원하는 실시간 자료를 검색하여 찾을 수 있고 홈페이지를 방분했을 때 이해하기 어려운 그래프나 각 홈페이지가 제공하는 자료들에 대한 처리 방법을 도움말로 제공받을 수 있게 했다. 실시간 자료들을 이용한 학습은 학생들의 학습 의욕과 탐구 능력을 향상시켰으며 컴퓨터 활용 능력과 외국어 자료 활용 능력을 향상 시키는데도 도움을 주었다.지역산업 발전을 위한 기술역량이 강화될 것이다.정 ${\rightarrow}$ 분배 ${\rightarrow}$ 최대다수의 최

• Journal of Science Education
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• v.38 no.2
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• pp.376-400
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• 2014

This study aims to examine the current status of Korean and overseas science and arts convergence programs in and out of schools to apply them in school education settings and to learn about the characteristics of overseas programs through case studies. In addition, it explores implications of the current domestic and overseas for implementation in schools. For this study, we selected 193 domestic in-school science and arts convergence programs and 106 domestic out-of-school programs. For the overseas programs, we selected those conducted by the government, research institutes, science halls, and art galleries. We also analyzed the domestic in-school programs by type of students, operation hours, areas of convergence, and the function and role of arts activities. We analyzed domestic out-of-school programs by operation time, operation method, areas of convergence, and type of activities. Moreover, we examined the overseas programs in terms of their program developers, goals, and characteristics. These findings suggest that in order for science and arts convergence education to become well established in Korean schools, it is necessary to develop programs that can be incorporated into the present science education curriculum, rather than individual content or a single class on science and arts convergence, and to diversify the range of programs. In addition, out-of-school programs should be actively considered, and intense discussions on the use of program activities and teaching materials are needed. Finally, research institutes and educational institutions should be closely linked to achieve a common goal.

• Science of Emotion and Sensibility
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• v.13 no.1
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• pp.47-60
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• 2010

Most of the researches about classification usually have used kNN(k-Nearest Neighbor), SVM(Support Vector Machine), which are known as learn-based model, and Bayesian classifier, NNA(Neural Network Algorithm), which are known as statistics-based methods. However, there are some limitations of space and time when classifying so many web pages in recent internet. Moreover, most studies of classification are using uni-gram feature representation which is not good to represent real meaning of words. In case of Korean web page classification, there are some problems because of korean words property that the words have multiple meanings(polysemy). For these reasons, LSA(Latent Semantic Analysis) is proposed to classify well in these environment(large data set and words' polysemy). LSA uses SVD(Singular Value Decomposition) which decomposes the original term-document matrix to three different matrices and reduces their dimension. From this SVD's work, it is possible to create new low-level semantic space for representing vectors, which can make classification efficient and analyze latent meaning of words or document(or web pages). Although LSA is good at classification, it has some drawbacks in classification. As SVD reduces dimensions of matrix and creates new semantic space, it doesn't consider which dimensions discriminate vectors well but it does consider which dimensions represent vectors well. It is a reason why LSA doesn't improve performance of classification as expectation. In this paper, we propose new LSA which selects optimal dimensions to discriminate and represent vectors well as minimizing drawbacks and improving performance. This method that we propose shows better and more stable performance than other LSAs' in low-dimension space. In addition, we derive more improvement in classification as creating and selecting features by reducing stopwords and weighting specific values to them statistically.