• 한국과학교육학회지
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• 제17권3호
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• pp.261-271
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• 1997

This study evaluates on students' understanding and misunderstanding of homeostasis, classification of animals and plants, and food production in plants, and analyzes the teacher factor as a possible source of students' misconception. A total number of 863 students and 47 biology teachers at the middle and high school were randomly selected. Students' conceptions and misconceptions were measured with concept evaluation statements (CES) which was translated into Korean by author. The CES was developed and validated by Simson and Marek (1988). Teacher's misconceptions were investigated the way in which teachers marked students' work. The supposed answer given to the teachers to mark was based on misconceptions held by students tested in concept evaluation statements. The results of this study are as follows : 1. 0% of 7th Grade students, 4.5% of 9th Grade students and 5.4% of 11th Grade students understood homeostasis. There was a significant difference at the level of students' understanding of homeostasis according to schools and gender(P<0.05). Many students had a tendency of understanding the conception of the homeostasis by experiences and unscientific use of everyday language rather than a scientific concept. 2. 0.4% of 7th Grade students, 3.1% of 9th Grade students and 2.9% of 11th Grade students understood classification of animals and plants. There was a significant difference at the level of students' understanding of classification of animals and plants according to schools and gender(P<0.05). Students classified animals and plants through personal experiences and observations instead of trying to classify through microscopic analysis of animals and plants cell. 3. 1.2% of 7th Grade students, 10.3% of 9th Grade students and 19.4% of 11th Grade students understood food production in plants. There was a significant difference at the level of students' understanding of food production in plants according to schools and gender(P<0.05). Students had a misconception that food production in plants was done by an absorption of nutrients from soil not by photosynthesis. 4. A large proportion of teachers surveyed in this study appear to have misconceptions about homeostasis (38.1%), classification of animals and plants (34.1%), food production in plants (40.4%). The male teachers had. more misconceptions than female teachers(P<0.05). However, they didn't show any significant differences according to schools and teaching experience(P<0.05). 5. According to the investigation of teachers' perception, 29.8% of the teachers acknowledged that they might be a cause for students' misconceptions. This study shows that 38.3% of teachers did not understand the analyzed biological concepts precisely. By comparing the data of students and teachers, it turned out that teachers participate in the students' misconceptions. And teachers themselves acknowledged that students' misconceptions could be caused by them. Therefore. teachers' right understanding of fundamental biological concepts should precede to students' biology education. New training programs for biology teachers seem to be urgent.

• 한국과학교육학회지
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• 제36권4호
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• pp.617-628
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• 2016

과학교육현장에서 이루어지는 과학적 실천(practice) 과정에는 다양한 암묵적 지식이 존재한다. 교사는 이 암묵적 지식을 학생들에게 지도하는데 있어 자신의 과학에 대한 가치지향점을 반영할 가능성이 높다. 따라서 이 연구에서는 현미경 세포 관찰 실험 상황에서 관찰 및 이미지 재현이라는 과학적 실천의 지도 과정에서 나타나는 예비교사들의 가치지향점을 확인해보고자 한다. 특히 이 연구에서는 과학적 관찰행동의 가장 큰 지향점인 객관성을 중심으로 예비교사들의 인식을 확인해보고자 한다. 이를 위하여 예비교사 50명에게 현미경 세포 관찰 실험에서 일어날 수 있는 상황에 대하여 자신의 생각을 서술하게 하였고, 서술한 자료들은 과학교육 전문가 2인의 반복적 비교분석을 통해 귀납적으로 범주화되었다. 그 결과 존재의 확인을 위한 수단으로서 관찰을 인식하는 '존재 확인 지향', 관찰은 객관적으로 이루어져야 한다는 '기계적 객관성 지향', 관찰의 주관적 성격을 인정하는 '학생의 주관성 지향', 관찰 대상과 표본 제작 및 관찰 과정에서 나타나는 인공적 산물을 구별하는 능력을 중시하는 '훈련된 판단 지향'의 4가지 유형을 확인할 수 있었다. 이 중 '기계적 객관성 지향' 유형이 예비 생물교사들에게 가장 많이 나타나 객관성이 관찰과 이미지 재현 행위에 대해 중요한 신념으로 작용함을 알 수 있었다. 또한 하나의 실험과 그 실험에 매개된 암묵적 지식에 대한 지도 과정에서 예비교사들의 다양한 가치지향점이 반영될 수 있음을 확인할 수 있었다. 교사들의 과학적 실천에 대한 이러한 가치지향점은 학생들의 지도행위와 평가에 직접적 영향을 미친다는 점에서 앞으로 교사교육에 많은 시사점을 줄 수 있을 것이다.

• 한국과학교육학회지
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• 제23권2호
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• pp.117-130
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• 2003

The study is to analyze the middle school-science parts among the products of nation-wide science exhibition for eleven years recently and the results of compared to the content of science-textbooks of middle school. The number of observation in the student parts among the products of nation-wide science exhibition was the highest in all methods studied, whereas, most teachers surveyed experiments in their products. The mean Shannon's diversity index (DI) was same trend for students and teachers. There was a non-significant difference of the methods in students and teacher groups according to years and the association between students and teachers were closely connected with methods. The correlation between the content of students' products and texts of middle-school was highly positive for earth science, chemistry, and biology, whereas physics showed negative correlation.

• Animal cells and systems
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• 제16권3호
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• pp.224-229
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• 2012

The Korean shiner (Coreoleuciscus splendidus, Gobioninae), a small freshwater fish native to Korea Peninsula, widely inhabits in most of the major drainages in South Korea. Here we describe the development of 14 novel and polymorphic microsatellites for this species and its effective utilization in estimation of genetic diversity using 72 individuals from three sampling sites in different drainages. Loci were isolated from a microsatellite enrichment procedure using probe-labeled magnetic beads. A total of 242 alleles were detected across all loci with an average of 17.3 alleles per locus ranging 4 32. The loci varied levels of polymorphism as evident from its expecte heterozygosity ranging from 0.111 to 0.957. The average pairwise $F_{ST}$ between two populations examined shows significant differentiation ($F_{ST}$ = 0.215, p<0.05). The 14 microsatellite loci developed here will also be useful to explain for the genetic structures among geographically isolated populations and gene flow dynamics within drainages in this species as well as the closely related species.

• 한국동물학회:학술대회논문집
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• 한국동물학회 2001년도 한국생물과학협회 학술발표대회
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• pp.126.1-126
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• 2001

No Abstract, See Full Text

• 환경생물
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• 제29권3호
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• pp.208-211
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• 2011

The lowest amount of heavy metals was found outside the city (25 km away), the highest amount was found near the thermoelectric power plant, and the average amount was discovered in the central part of the city. The presence of heavy metals in soil samples resulted in reduction of several important soil characteristics (pH, humus content, soil "breathing"). Use of simple and quick methods to examine soil with high heavy metals pollution resulted in the discovery of a pedobiota group, consisting of nematodes, fungi (genus Fusarium) and Protozoa which indicated the toxicity of the Almaty city soils.

• 한국과학교육학회지
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• 제31권8호
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• pp.1186-1198
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• 2011

과학교육과정에서 과학 지식의 실용성에 관한 인식을 점차 강조해 왔다. 진화 이론 역시 현대 과학에서는 실용적으로 활용되고 있음에도 불구하고 그에 대한 학생들의 인식은 낮을 것으로 예상된다. 이 연구는 진화 이론의 실용성에 관한 인식과 관련된 변인을 탐색하는 것을 목표로 한다. 방법론적으로 전공, 학년, 종교의 3가지 독립변수와 실용성에 관한 인식, 진화 지식, 진화 관심, 진화 수용, 종교성의 5가지 종속변수를 설문조사 하였다. 총 233명의 생물 예비교사와 405명의 비생물 과학예비교사가 이 연구에 참여하였다. 연구 결과, 비생물 교사 양성 프로그램과 비교하였을 때 생물 교사양성 프로그램은 진화 지식과 관심을 향상시키는데 기여했을 뿐 진화 이론의 실용적 가치에 대한 인식을 향상시키지 못하였다. 진화 이론의 실용적 인식은 개인의 종교 변수, 진화 관심과 수용과 밀접한 관련성을 보였다. 이 연구를 토대로 진화 이론의 실용적 가치를 향상시키는 프로그램의 개발과 다른 과학 개념들의 실용성 인식 변인 조사를 제언한다.

• 과학교육연구지
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• 제32권1호
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• pp.33-46
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• 2008

본 연구의 목적은 제7차 교육과정 생물II 교과서의 '광합성' 단원에 나타난 내용 오류를 분석하여 수정 예시를 제시함과 아울러 이 오류가 과목 담당 교사들에 의해 어느 정도 지적되고 수정되는지 조사함으로써 오류가 수정 지도될 가능성을 알아보는데 있다. 이를 위해, 제7차 교육과정 생물II 8종 교과서 광합성 단원에서 오류를 분석하고, 오류가 담긴 교과서 내 지문으로 설문문항을 개발하여 교사들의 오류 인지 및 수정정도를 조사하였다. 8종의 교과서 광합성 단원의 13개 학습주제에서 발견된 오류의 수는 총 48개였으며, 1종의 교과서에서 1개의 학습주제에 대해 4가지 오류가 나타나거나 동일한 오류가 여러 교과서에서 각각 나타나기도 하였다. 35명의 생물II 과목 담당 교사를 대상으로 한 설문 조사 결과, 교과서에 나타난 그래프(문항 6번), 잘못된 용어(문항 4-3번), 잘못된 그림(문항 1-2번) 등과 같은 단순오류의 경우를 오류를 정확히 지적하고 수정한 예가 각각 43%, 40%, 32%로 비율이 높았다. 그러나 광합성의 명반응 과정을 설명하는 삽화에서 에너지 준위의 개념이 접목되어야 하는 오류에 대한 지적을 한 사례는 없었다. 이러한 결과는 생물II 광합성 단원에 나타나는 오류는 정확히 수정되어 지도될 가능성이 낮음을 시사한다. 학생들이 광합성에 대한 오개념을 가질 가능성을 낮추려면 오류를 수정 사항에 대한 자료를 교사들에게 배부하거나 교사연수 또는 워크샵 등을 통해 이에 대한 정보를 나눌 기회가 제공되어야 할 것이다.

• 한국과학교육학회지
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• 제13권2호
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• pp.146-151
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• 1993

This study analyzed the problem associated with inquiry centered science education and formulated some improvement Strategies for inquiry learning in the standard Korean high school course. In order to attain the goals of questionaire survey methods were used. To examine the current status of biology education, seperate questionaires were developed through an educational research and development procedure used for tearchers and student. The questionaires were developed to ask about instruction and evaluation methods, the level of inquiry learing and abstacles to it. Here are some of our results: 1) Biology instruction and learning is more knowledge-orinted than inquiry-orinted, 2) Inquiry approach in science teaching is hard to be applied because of crowed classroom conditions. 3) The material is too broad in range and too difficult in content. There is virtually nothing that can be related to everyday life. The material focusing on inquiry activities is unsatisfactorily selected and organized. 4) Effective methods of inquiry-based instruction and evaluation are not available. 5) Biology teachers are burdened with too many class hour a week and too many varieties of additional works. 6) 91.1% of biology teachers and 90.3% of students recognize that lab and field works are needed to enhance inquiry learning. However, in reality, such inquiry activities are lacking. 7) 73.3% of schools have no lab assistants. 8) The university entrance examination is the greatest factor against inquiry learning. 9) There are very few chances of in-service education for biology teachers to learn more about biology curriculum and science education theory.

• 한국과학교육학회지
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• 제24권4호
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• pp.748-757
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• 2004

When teachers for the gifted express metaphors about their teaching, they may develop better understanding and conceptualizing of teaching and enable to choose appropriate teaching strategies for optimizing individualized learning of the gifted. Therefore, the purpose of this study includes to explore metaphors about science teachers' teaching for the gifted in middle schools and classify into types of metaphors. The survey was administered and completed survey instruments by 66 science teachers for the gifted at gifted educational institutions affiliated with local offices of education and 18 science teachers at middle schools were analyzed. It was revealed that science teachers for the gifted described seven types of metaphors about their teaching with characteristics of student-centered (counsel, helper, etc.), teacher-centered (judge, captain, etc.), or student-teacher-interacted (painter, nurse, etc.) types. More than 60% of teachers described their teaching as either student-centered or student-teacher-interacted types. However, percentage of teachers for the teacher-centered and power-oriented type was higher for science teachers for the gifted (33%) than science teachers for regular students (22%). It was also found that female science teachers for the gifted showed higher percentage for teacher-centered and power-oriented (35%) than male teachers (28%) and teachers with BS degree showed higher percentage for student-centered and service-oriented type (33%) than teachers with MS degree (27%). In addition biology teachers for the gifted also were appeared to be more teacher-centered and power-oriented type (60%) than physics (21%), chemistry (6%), and earth science (33%).