• 한국지구과학회지
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• 제21권6호
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• pp.695-702
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• 2000

경상남도 사천 지역에 분포한 백악기 진주층의 비해성(非海成) 퇴적층에서 생흔화석 Protovirgularia McCoy, 1850를 보고한다. 이 지역의 진주층은 주로 호수 환경에서 퇴적된 회색의 이암과 셰일 및 세립질 사암으로 구성되어 있다. 이러한 Protovirgularia의 산출은 비해성 퇴적 환경에서 처음으로 보고되는 것이다.

• 한국지구과학회지
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• 제28권5호
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• pp.563-571
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• 2007

Adelograptus brevibrachiatus sp. novo is erected for materials previously referred to as Adelograptus cf. tenellus from the circum-Pacific area. The species shares many morphological characteristics with Adelograptus tenellus from Europe but differs from it by possessing typically short stipe lengths throughout rhabdosome due to less thecal density along the stipes. Taxonomic characteristics of A. cf. tenellus reported from circum-Pacific area are compared with each other. The paleogeographic distribution of A. tenellus seems to be restricted within Europe, while that of A. brevibrachiatus within circum-Pacific area.

• 한국초등과학교육학회지:초등과학교육
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• 제30권1호
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• pp.38-50
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• 2011

As the rate of foreign workers increasing, the rates of their children are rising, as well. The children's native countries vary from Japan, China to Indonesia, and difficulty of learning is expected in their entering the regular education due to the differences in the contents and curriculum they had learnt. This study analyzed the science textbooks of five Asian elementary schools including Korea, China, Indonesia, Thailand, and Iran-in diversified sides focusing on the content of earth science, for the children of foreign workers. The characteristics of the elementary science textbooks of the subject countries were compared in seven criteria-the rate of earth science in the textbooks, how units are arranged, whether the earth science contents are included, the contents highly related to their socio-cultural traits, photographs, scientific inquiries, and test items. The textbooks showed numerous differences with their own characteristics, and it is expected that the children of foreign workers would face difficulties in studies taking parts in the Korean formal education. Hereupon, this study proposes the needs of development of sub-materials for the children of foreign workers adapting to schools, and reinforcement of educating teachers for understanding children, with a national plan for the children excluded from education due to problems such as an illegal residence.

• 한국지구과학회지
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• 제32권5호
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• pp.485-493
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• 2011

There has been increasing evidence of the positive effects in informal science programs to promote the youths' positive development. However, relatively a small number of informal science programs target specific student populations such as youth in poverty with little research done about the important program factors. This case study presents an exemplary informal science education program (focusing on Earth Science Education or more specifically, water in urban environments) for youth in poverty in a midwest city of the United States. This study explored the most important characteristics of the program that could lead to positive development for the youth. Through a number of observations of the program and interviews with the participants, this study employs inductive and interpretive research methods. Findings show that the program managers' beliefs about the youths' knowledge and experiences, their relationship building skills, and their cooperative work are very important. A concrete mission for the program and structured institutional support to hire the youth as paid museum staff are also important in assuming their responsibility and building identity as an active social member.

• Journal of Astronomy and Space Sciences
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• 제33권4호
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• pp.295-304
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• 2016

The atmosphere strongly affects the Earth's spin rotation in wide range of timescale from daily to annual. Its dominant role in the seasonal perturbations of both the pole position and spinning rate of the Earth is once again confirmed by a comparison of two recent data sets; i) the Earth orientation parameter and ii) the global atmospheric state. The atmospheric semi-diurnal tide has been known to be a source of the Earth's spin acceleration, and its magnitude is re-estimated by using an enhanced formulation and an up-dated empirical atmospheric S2 tide model. During the last twenty years, an unusual eastward drift of the Earth's pole has been observed. The change in the Earth's inertia tensor due to glacier mass redistribution is directly assessed, and the recent eastward movement of the pole is ascribed to this change. Furthermore, the associated changes in the length of day and UT1 are estimated.

• 한국지구과학회지
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• 제31권5호
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• pp.521-530
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• 2010

This study aimed to explore how to characterize the earth science inquiry in schools in terms of science teaching interaction and constructivist teaching practice. The constructivist teaching practices were analyzed with Reformed Teaching Observation Protocol (RTOP) in three aspects including (1) student oriented class implementation, (2) subject knowledge and representation, and (3) classroom communication. Fourteen earth science classes were observed and scored with RTOP. The class was evaluated to be transitional stage in terms of constructivist teaching, e.g., moving toward student-centered teaching practice. Especially, Korean teachers tend to lean their classes more on propositional knowledge than procedural knowledge. To interpret science teaching interactions, an earth science teacher with a RTOP top rank was selected. Her class was then videotaped for detailed analysis. I adopted the analytical framework of communicative approaches and discourse patterns among the five aspects of interactions presented by Mortimer and Scott (2003). It was found that this earth science teacher used more authoritative patterns than the dialogic. In addition, she used IRE discourse pattern more frequently. Interestingly, teachers interacted with their students more frequently in the form of repeated (or IRE chain pattern), that is IRFRF (teacher initiation-student response-teacher feedback-student response-teacher feedback) in the context of dialogic communicative approaches, while simple IRE occurred in an authoritative approach. In earth science classrooms, typical interaction may well be constructed in the form of IRFRF chains to allow students free conjectures and abduction.

• 대한지구과학교육학회지
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• 제17권1호
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• pp.49-59
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• 2024

본 연구에서는 2022 개정 과학과 교육과정 개발 과정에서 고등학교 지구과학 TF팀에서 수행한 고등학교 지구과학 분야의 2022 개정 교육과정 개발의 철학적 배경과 성과 등을 탐색하였다. 연구보고서에서 다루지 못한 연구로, OECD Education 2030의 변혁적 역량과 지구과학 분야 교육과정 문서 체제의 관련성, 이해중심 교육과정에 비추어 본 지구과학 분야의 핵심 아이디어 구성과 선택과목 구성, 지구과학 분야의 탐구 기반 교수학습의 특징 등을 탐색하였다. 주요 연구결과를 살펴보면, 지구과학 분야를 포함하여 2022 개정 과학과 교육과정에서는 OECD Education 2030의 변혁적 역량과 과학소양을 함양할 수 있도록 학생과 교사의 행위주체성(agency)을 강조하였으며, 지구과학 분야 교육과정 문서 체제에서는 학습 나침반 바늘을 구성하는 지식·이해, 과정·기능, 가치·태도를 중심으로 핵심 아이디어와 성취기준을 구성하였다. 이해중심 교육과정에 근거하여 지구과학 분야의 핵심 아이디어를 도출하고, 지구과학 분야의 핵심 아이디어에 도달할 수 있도록 선택과목별 특성에 맞추어 과목별 영역과 지식·이해 내용요소를 구성하였다. 또한, 지식 생산 역량을 갖춘 학생 행위주체 육성을 위해 과학과 과정·기능에 부합하는 IB형 탐구 기반 교수학습을 강조하였다. 연구 결과를 토대로 국가 수준 그리고 총론 수준에서 교육 과정 대강화의 필요성, 가치·태도에 대한 과정중심 평가 방안 개발보급, 및 백워드 설계 형태의 교육과정 개발의 필요성, 과학과 탐구의 과정·기능에 입각한 탐구 기반 교수학습을 통한 학생 행위주체의 과학 역량 함양 방안 등을 결론으로 제언하였다.

• 한국과학교육학회지
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• 제33권3호
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• pp.664-678
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• 2013

This study aims to investigate gifted students' explanations for daily celestial motion from the Earth-based and heliocentric frames of reference. Eleven sixth-grade elementary school students were chosen for this study and data was collected through a questionnaire and an in-depth interview. The collected data was analyzed into celestial objects which are the Sun, the moon and the stars and analyzed based on the Earth-based and heliocentric perspectives again. As a result of the research, most gifted students were able to connect the Earth-based and heliocentric frames of reference with the Sun's daily apparent motion. However, they understood the daily apparent motion of the moon and the stars far less frequently compared to the Sun's motion and could not explain the Earth's rotation clearly. The result of the interview showed that the lack of understanding about the daily celestial motion was caused by inaccurate understanding of the Earth's rotation such as using memorized knowledge learned in school and guessing the answer.

• 대한지구과학교육학회지
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• 제4권3호
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• pp.258-266
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• 2011

This study was carried out to P University of Education 111 students who participated in science materials study course 1 in spring semester 2011. Students have taken the course pre-service teachers of elementary school classes to target elementary school earth science field, they selected one of the sections to create a class and the students have fulfilled 15-minute classes in respectively from the first week of May 2011 to until end of that course. In this class, colleagues evaluated the classes and we used evaluated scores to determine level of instructional motivation strategy. The obtained results from this study are as follows; First, motivational strategies used by preliminary elementary school teacher were questions, presentation of pictures and photographs, storytelling, presentation of contradictory concepts and phenomena, pilot experiments Second, among preliminary elementary teachers' motivational strategies for teaching in the field of the earth storytelling, presenting contradictory phenomena and concepts, pilot experiment, presentation of contradictory concepts, questions got higher scores in the order. Third, storytelling received the highest scores by the evaluators. So we can consider storytelling as a good strategy for the next class. In particular, storytelling used by animism were more effective. Fourth, preliminary elementary school teachers used life knowledges and dairy experiences as instructional motivation.

• 한국지구과학회:학술대회논문집
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• 한국지구과학회 2005년도 추계학술발표회 논문집
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• pp.161-162
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• 2005