• 한국초등과학교육학회지:초등과학교육
• /
• 제42권3호
• /
• pp.455-466
• /
• 2023

이 연구에서는 초등 과학영재 학생의 과학 학업 열정 및 과학 긍정 경험과 과학적 창의성의 관계를 탐색하였다. 이를 위해 초등 3~6학년 과학영재 학생 108명을 선정하여 과학 학업 열정 검사, 과학 긍정경험 검사, 과학적 창의성 검사를 실시한 뒤, 기술통계분석과 상관분석 및 다중회귀분석을 실시하였다. 연구 결과, 연구 대상 초등 과학영재 학생의 과학 학업 열정과 과학 긍정 경험은 비교적 높은 수준이었지만, 과학적 창의성은 비교적 높지 않은 수준이었다. 과학 학업 열정 전체는 과학적 창의성과 통계적으로 유의미한 상관이 없었지만, 5가지 하위 영역(중요함, 좋아함, 시간/에너지 투자, 조화열정, 강박열정) 중 '강박열정'에서는 과학적 창의성과 통계적으로 유의미한 부적 상관이 있었다. 또한 과학 학업 열정의 5가지 하위 영역, 특히 '좋아함', '조화열정', '강박열정'은 과학적 창의성에 통계적으로 유의미한 영향을 미치는 것으로 나타났다. 하지만 과학 긍정 경험의 5가지 하위 영역(과학 학습 정서, 과학 관련 자아개념, 과학 학습 동기, 과학 관련 진로 포부, 과학 관련 태도)은 과학적 창의성과 통계적으로 유의미한 상관이 없었을 뿐만 아니라, 과학적 창의성에 통계적으로 유의미한 영향을 미치지 못하였다. 또한 과학 학업 열정 전체와 과학 긍정 경험 전체는 과학적 창의성에 통계적으로 유의미한 영향력이 없었다. 이러한 결과에 대한 교육적 시사점을 논하였다.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권11호
• /
• pp.4663-4670
• /
• 2014

Trichostatin A (TSA) is a histone deacetylase (HDAC) inhibitor. We here investigated its effects on proliferation and apoptosis of the CNE2 carcinoma cell line, and attempted to establish genome-wide DNA methylation alteration due to differentially histone acetylation status. After cells were treated by TSA, the inhibitory rate of cell proliferation was examined with a CCK8 kit, and cell apoptosis was determined by flow cytometry. Compared to control, TSA inhibited CNE2 cell growth and induced apoptosis. Furthermore, TSA was found to induce genome-wide methylation alteration as assessed by genome-wide methylation array. Overall DNA methylation level of cells treated with TSA was higher than in controls. Function and pathway analysis revealed that many genes with methylation alteration were involved in key biological roles, such as apoptosis and cell proliferation. Three genes (DAP3, HSPB1 and CLDN) were independently confirmed by quantitative real-time PCR. Finally, we conclude that TSA inhibits CNE2 cell growth and induces apoptosis in vitro involving genome-wide DNA methylation alteration, so that it has promising application prospects in treatment of NPC in vivo. Although many unreported hypermethylated/hypomethylated genes should be further analyzed and validated, the pointers to new biomarkers and therapeutic strategies in the treatment of NPC should be stressed.

• 한국초등과학교육학회지:초등과학교육
• /
• 제39권4호
• /
• pp.506-521
• /
• 2020

This study aims to develop a scientific creativity task which science-gifted elementary students can conduct on a field trip to a botanical garden, and to analyze the results from conducting the task. For this, 38 science-gifted fifth-graders from the Science-Gifted Education Center, located at the Office of Education, participated in a field trip to a botanical garden, as a part of their program. Prior to the program, researchers developed a scientific creativity task for outdoor education program, along with science education specialists and teachers. The tasks were to observe plants, and to create something new and useful, or, in other words, scientifically creative, based on the plants' characteristics. The students could submit at most three ideas. Also, they assessed their own ideas, and selected an idea that they thought was the most creative. The results were analyzed by using the scientific creativity formula. The main findings from this study are as follows. First, it was found that the scientific creativity formula had an upward bias in assessing originality. Second, the students tended to assess the usefulness of their own ideas more generously. Third, the correlation between self-assessment results and scores from the scientific creativity formula for originality was r=.43. Fourth, in formula-based assessments, the correlation between originality scores and usefulness scores was relatively high, at r=.56. Fifth, the correlation between a student's scientific creativity score and the number of his or her ideas was very low, at r=.23. Sixth, when the ideas chosen as the most creative by students were compared with the ideas that had the highest scores in formula-based assessments, it was shown that 8 out of 19 students (42.1%) did not choose the idea that appeared to be the most creative when graded by the formula. This study is concluded by discussing the lessons from the scientific creativity task analysis for primary science education and gifted education.

• 한국초등과학교육학회지:초등과학교육
• /
• 제30권3호
• /
• pp.353-366
• /
• 2011

An alternative vision for science inquiry that appears to be important and challenging is model-based inquiry in which students generate, evaluate and revise their explanatory model. Pre-service teachers should be given opportunities to develop and use their mechanistic explanatory models in order to participate in the practice of science and to have a sound understanding of science. With this view, this study described a case of pre-service elementary teachers' scientific modeling in magnetism. The aims of this study were to explore difficulties preservice elementary teachers encountered while they engaged in a model-based inquiry, and to examine how their understandings of the nature of scientific models changed after the model-based inquiry. The data analysis revealed that the pre-service teachers had difficulties in drawing and writing their own thinking because they had little experience of expressing their own science ideas. When asked to predict what would happen, they could not understand what it meant to make a prediction "based on their model". They did not know how to use or consider their model in making a prediction. At the end of the model-based inquiry they reached a final consensus of a best model. However, they were very anxious about whether the model was the "correct" answer. With respect to the nature of scientific models, almost all of the pre-service teachers initially viewed models only as a communication tool among scientists or students and teachers to help understand others' ideas. After the model-based inquiry, however, many of them understood that they could create, test, and revise their "own" models "by themselves". They also realized the key aspects of scientific models that a model can be changed as evidence is accumulated and a model is a knowledge production tool as well as a communication tool. The results indicated that pre-service elementary teachers' understandings of the nature of scientific models and their previous school science experiences could affect their performance on a model-based inquiry, and their experience of scientific modeling could help them enhance their understandings of the nature of scientific models.

• 한국초등과학교육학회지:초등과학교육
• /
• 제38권4호
• /
• pp.439-452
• /
• 2019

This study aims to compare self- and peer-assessments of science-gifted elementary students' scientific creativity. A science-gifted program on the Pascal's principle was implemented to 40 fifth-graders in the Science-Gifted Education Center for two weeks. After that, students presented their results from a scientific creativity task using the principle in class. The task was to devise a new and useful tool using the principle, and it included the students' self-assessment about their idea. During presentation, students were asked to assess the works of peers and write down the reasons that they gave the scores they gave. Shortly, student self- and peer-assessments about students' scientific creativity outcomes were compared. Based on two essential components of creativity, ideas that satisfy both originality and usefulness can be counted as scientifically creative. The main results of this study are as follows: First, the average scores of student self- and peer-assessments were 71.5 and 61.9. Second, the standard deviations of student self- and peer-assessments were 14.47 and 5.79. Third, among scientific creativity, originality, usefulness scores, only originality had a significant correlation between student self- and peer-assessment (r=.42). Fourth, the students were categorized into four groups according to the levels of their scores by student self- and peer-assessment. And the frequencies of peer-assessment group had a significant difference at p<0.05 level, according to self-assessment group (Chi Square=4.0000, df=1, p=0.0455). Fifth, through a case study by group, the results suggesting that self-assessment could be affected by the students' self-efficacy and perfectionism and such effect could also influence peer-assessment have been found. The result showed that how the student self- and peer-assessment of scientific creativity are different and what the students' thoughts on the evaluation of scientific creativity are. The findings suggested that there are several things to consider for the educators to make efforts to construct consistent assessment methods for scientific creativity.

• 예술인문사회 융합 멀티미디어 논문지
• /
• 제8권7호
• /
• pp.341-350
• /
• 2018

이 연구의 목적은 초등 예비교사를 대상으로 과학적 사고력과 과학적 감성을 계발하기 위한 과학 에세이 쓰기 활동을 개발하여 그 효과를 분석하는데 있었다. 연구를 위해 우리나라 G지역의 교사 양성 기관에 다니고 있는 1학년 학생 60명이 선택되었다. 60명의 초등 예비교사는 모두 '과학 탐구'와 관련된 교양 강의를 선택한 학생들이었다. 연구결과, 과학적 사고력과 관련된 글에서는 과학적인 방법인 '귀납'의 방법을 사용하는 것을 확인할 수 있었으며, 과학적 감성과 관련된 글에서는 이야기의 배경, 매개체, 목적과 관련된 서술이 포함되어 있는 것을 확인할 수 있었다. 더불어 초등 예비교사들은 글쓰기가 거듭되면서 글쓰기 능력이 향상되었으며, '과학'에 대한 이미지도 많은 부분에서 긍정적으로 변화함을 확인할 수 있었다. 아울러 이번 연구는 과학 글쓰기 능력 향상을 위해서 다양하고 흥미로운 과학 탐구 활동이 필요함을 시사해 준다.

• 한국과학교육학회지
• /
• 제29권4호
• /
• pp.423-436
• /
• 2009

이 연구에서는 중등 과학 교과서의 과학적 모형들에 대해 그 표상 양식과 속성에 따라 분류하는 분석틀을 개발하여, 7${\sim}$10학년 과학 교과서 생명 영역에 제시된 과학적 모형들의 유형을 분석하였다. 그 결과, 모형의 표상 양식은 생명 영역의 주제별로 특성을 나타냈다. 전체적으로는 기관의 형태를 표상한 그림이나 시스템의 작동에 대한 설명과 같은 모상 모형과 상징적 모형의 비율이 고르게 높았다. 그러나 '생물의 구성'과 '생명의 연속성' 에서는 실제적 모형이 상대적으로 높게 나타났다. 또한 이론적 모형은 개념의 특성상 추상성이 높기 때문에 '생명의 연속성' 주제에서 일부 제시되었다. 몸짓 모형이나 비유적 모형은 매우 낮은 비율을 보였다. 표상의 속성 차원에서는 모든 주제에서 정적 모형의 비율이 매우 높았고, 동적 모형의 비율은 매우 낮았다. 따라서 과학 개념들의 특성을 좀 더 명확히 파악하고, 그 개념을 정확히 표상할 수 있는 다양한 유형의 모형들을 개발하려는 노력이 요구된다. 과학적 모형들에 대한 유형 분석은 개념이나 현상을 표상하는 모형의 유용성과 한계를 파악할 수 있고, 특정 개념을 표상하는데 적합한 모형을 고안하는데 도웅을 줄 수 있다. 또한 이런 유형의 분석은 현 교과서들에 나타난 과학적 모형 사용의 제한점과 바람직한 방향을 모색하게 할 뿐 아니라, 7차 개정 교육과정에 따른 과학 교과서를 구성하는데 유용한 정보를 제공해 줄 것이다.

• 한국초등과학교육학회지:초등과학교육
• /
• 제31권2호
• /
• pp.208-215
• /
• 2012

A creative science writing program was developed, and applied to 2nd grade elementary students. Two 2nd grade elementary school classes in Seoul district were selected for the current study. A Pretest-Posttest Control Group Design was applied. The experimental group adopted the creative science writing program and the control group maintained traditional lectures for 12 classes. TTCT(Torrance Test of Creative Thinking) figural test and a scientific attitude test were conducted on both groups. According to the analysis, TTCT score of the experimental group was significantly higher than that of the control group (p<.01). Among several subscales of TTCT, elaboration and resistance to premature closure was especially improved. Also, scientific attitude scale of the experimental group was significantly higher than that of the control group (p<.01). Among subscales of scientific attitude, the creative science writing program was effective on improving students' open-mindedness, critical mindedness, cooperation, voluntariness, and endurance. Gender was not a factor in the improvement of both students' creativity and scientific attitude.

• 한국비블리아학회지
• /
• 제21권4호
• /
• pp.81-93
• /
• 2010

본 연구의 목적은 기록물로서 과학데이터의 보존 및 활용 모델을 제시하는데 있다. 과학데이터와 관련하여 미국과 영국, 호주, 유럽연합의 국가별 동향을 조사하였으며, 해외 선진 사례를 프로그램 단위로 조사하였다. 조사된 프로그램은 DataCite, WDS, PANGAEA, Dataverse, BSRN, DLESE, GCMD, SEDIS이다. 각각의 프로그램에서 공통된 시사점을 도출하였으며, 이를 기반으로 본 연구에서는 과학데이터 보존 및 활용을 위한 모델을 제시하였다.

• 한국과학교육학회지
• /
• 제31권3호
• /
• pp.455-474
• /
• 2011

The purpose of this study is to explore the ways in which scientists reflect on the scientific practices, based on the premise that reflection is one of key elements for shaping scientific identities. This paper specifically considers scientists' reflections as the processes in which their senses of ethical issues and the value of science are articulated. To do so, the study developed a narrative inquiry for exploring the value of scientists' stories. Fourteen professional scientists' stories were collected in the context of the stem cell research, in ways that foreground their reflections on current scientific practices and the surrounding socio-cultural conditions. As for ethical issues, scientists' stories were analysed in terms of four claims regarding the themes of bioethics, integrity, scientific issues and communication. Furthermore, scientists' reflections on the value of science were analysed in relation to the elements of nature of science. Based on the results, discussion focused on the value of science stories as an instrument with which to guide students into the enculturation in the practices of scientific culture.