• 한국과학교육학회지
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• 제17권2호
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• pp.139-148
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• 1997

This study investigated the influences of the cooperative learning strategies upon students' achievement and their perceptions of learning environments in a middle school physical science course. Prior to instruction, the Group Assessment of Logical Thinking was administered, and its score was used as a blocking variable. Mid-term examination score was used as a covariate. For the treatment group with heterogeneous grouping, cooperative learning instruction (the Learning Together model) was used, which emphasized group reward, individual accountability, and role division. For the control group, traditional instruction was used. After instruction, an achievement test consisting of three subtests (knowledge, understanding, and application), and the perception questionnaire of classroom and laboratory environments, were administered. ANCOVA results revealed that there was a significant interaction between instruction and the level of logical reasoning ability although there were no significant differences in all three subtest scores of the achievement test. For the concrete operational reasoners, the treatment group performed better in the subtests of understanding and application than the control group. For students at the formal and transition levels, however, the treatment group scored lower than the control group. Significant interactions were also found in the perceptions of classroom environment and laboratory environment. For the concrete operational reasoners, the treatment group showed more positive perception than the control group. For the students at the formal and transition levels, the control group had positive perception than the treatment group. Educational implications are discussed.

• 한국과학교육학회지
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• 제18권2호
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• pp.201-208
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• 1998

일반적으로 협동학습이 학업 성취에 효과적이라고 보고되지만, 과학 실험 수업에서의 학업 성취 및 상위 수준 학생에 대한 효과는 일관되지 않다. 본 연구에서는 실험 수업에서 필요한 고급 사고 수준의 활동이 포함된 과제를 소집단 활동 중심으로 해결하도록 한 협동학습을 초등학교 자연 수업에 적용하여 그 효과률 조사하였다.5학년의 '용해와 용액' 단원 총 16차시에 대하여 전통적 수업과 협동학습을 실시한 후 학업 성취도, 탐구 사고력, 자연 수업에 대한 태도, 수업 환경에 대한 인식등을 비교하였다. 이원 공변량 분석 결과, 협동학습 집단의 학업 성취도와 탐구 사고력이 전통적 수업 집단에 비하여 유의미하게 높았으며, 수업 처치와 성취 수준 사이의 상호작용은 나타나지 않았다. 수업 환경에 대환 인식 중 마찰도에 대한 인식은 협동학습 집단이 높았으며, 자연 수업에 대한 태도와 참여도에 대한 인식에는 두 집단사이에 차이가 없었다.

• 한국농공학회논문집
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• 제54권3호
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• pp.81-89
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• 2012

This paper presents a set of controlled simulated statical and engineering mechanical experiments accessible via the virtual world environment (VWE) and virtual physics lab S/W. Online courses of the university offering courses and/or programs online are growing and the number of students want education in ways which fit their personal places, e-learning is becoming more important and ubiquitous each year. In this study, first of all, question is rather 'How do we execute the learning effectiveness of e-learning courses?' than 'Why does they need e-learnig or VW-learning?'. In particular, is it possible to effectively teach mechanical engineering courses online? The answer was 'No'. So, there is little research on many of these questions. And another important question is 'Is e-learning cost effective?'. For the answer, This research provided that an instructional design model is used to 'How to think and apply the Newtonian forces' in the virtual physics lab S/W. Collected data from student are administered in the spring semester when students studied 'Introduction to Bio-resources and Systems Engineering'. Results show that a cadre of students can take highly interactively physical properties of mechanical engineering in the virtual laboratory environment. Those show that VWE is greater than that of a similar real world presentation or experimental lab, since most of students are delighted to modify and retry modeling works in the VWE.

• 한국지구과학회지
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• 제31권4호
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• pp.403-417
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• 2010

이 연구에서는 초임교사 지원을 위한 출발점으로 초임교사의 수업에서 드러나는 특징을 탐구하였다. 본 연구에서는 수업능력개발이 요구되는 초임교사의 전문성 개발을 지원하기 위해 멘토링 체제를 기획하고 이를 시범 적용함으로써 그 효과를 살펴보았다. 3쌍의 멘토-멘티를 대상으로 멘토링을 시범운영해보고, 멘토링 전후의 초임교사 수업 특징 변화를 분석하였다. 본 연구에서는 동일한 단원의 전 차시 수업에 대하여 멘토와 멘티가 수업동영상을 만들고, 6명의 초임교사와 선배교사로 구성된 6명의 컨설팅 협의진이 차시별 수업을 교차분석하였다. 수업동영상 분석을 위한 컨설팅 협의회, 멘토-멘티교사와의 면담 자료 등을 활용하여 멘티 수업에서 발견되는 특징을 진단하고 멘토링 적용 효과를 추적하고, 멘토링 체제 개선에 주는 시사점을 정리하였다. 멘티의 수업에서 발견되는 공통된 특징을 (1) 수업 문화와 수업 운영, (2) 교실담론, (3) 과학 실험과 활동의 측면에서 살펴보고, 멘토링을 통해 이러한 특징이 어떻게 변하는지를 고찰하였다. 멘토링 전후에 멘티교사의 수업에서 나타난 변화를 살펴보면, 멘티들은 실제 수업시간에 학생들과 대화를 많이 하는 것이 "학생들의 지능발달이든 내용이해 측면에서든" 효과가 있으며, 멘토링 과정을 경험하면서 멘티들은 실험의 필요성을 인정하게 되었으며, 실험활동의 역할과 운영 방안 등을 파악하게 되었다. 연구결과를 토대로 초임교사의 수업전문성 개발과 관련된 지원방안을 제안하였다.

• 한국컴퓨터정보학회논문지
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• 제9권3호
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• pp.115-120
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• 2004

SCORM의 데이터 모델을 확장하여 학습자의 학습특성에 따라 학습 컨텐츠를 차별적으로 제공할 수 있는 적응형 학습관리 시스템을 제안하였다. SCORM의 데이터 모델 확장과 학습자의 진단-처방처리 절차를 정립하여 IEEE에서 제시한 표준 학습관리 시스템의 아키텍쳐(LTSA)에 추가시켜 시스템을 설계하였으며, 컨텐츠 메타데이터를 확장하였고. 학습진행 동안에 컨텐츠를 동적으로 순서를 정하게 하는 패키징을 정의하여 이를 기반으로 적응형 학습관리 시스템을 구현하였다. 실험 컨텐츠를 이용해 시스템의 성능을 평가한 결과, 학습자의 특성에 따라 개별적인 학습컨텐츠가 제공되었고, SCORM을 확장하여 적응형 학습관리 시스템을 구현하는 것이 가능함을 보여 주었다.

• 한국과학교육학회지
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• 제17권2호
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• pp.179-189
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• 1997

In this study, a conceptual change model for effective laboratories was developed and its instructional effect on students' achievement, the acquisition of scientific conceptions, and the attitudes toward science was investigated. Considering several conceptual change models in literature and Korean educational situations, the conceptual change model was developed. The model consists of 5 stages; preliminary, prediction, exploration, consolidation and reconstruction, and application. The treatment and control groups (2 classes) were selected from a middle school in Seoul, and taught about the changes of states, density, and dissolution for three weeks. Prior to instruction, the Group Assessment of Logical Thinking and the Learning Approach Questionnaire were administered, and their scores were used as covariate and / or blocking variable. To examine students' alternative conceptions before the instructions, a pre-conceptions test was also administered. After the instructions, students' achievement, the acquisition of scientific conceptions, and the attitudes toward science were measured with a researcher-made achievement test, a post-conceptions test, and the subtests of the Test of Science-Related Attitudes, respectively. The results indicated that the score of the treatment group was significantly higher than that of the control group in the post-conceptions test. The students in the treatment group had also less alternative conceptions than those in the control group. However, there were no significant differences for the achievement and the attitudes toward science. Educational implications are discussed.

• Safety and Health at Work
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• 제8권2호
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• pp.117-129
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• 2017

Chronic disease rates have become more prevalent in the modern American workforce, which has negative implications for workplace productivity and healthcare costs. Offering workplace health interventions is recognized as an effective strategy to reduce chronic disease progression, absenteeism, and healthcare costs as well as improve population health. This review documents intervention and evaluation strategies used for health promotion programs delivered in workplaces. Using predetermined search terms in five online databases, we identified 1,131 published items from 1995 to 2014. Of these items, 27 peer-reviewed articles met the inclusion criteria; reporting data from completed United States-based workplace interventions that recruited at-risk employees based on their disease or disease-related risk factors. A content rubric was developed and used to catalogue these 27 published field studies. Selected workplace interventions targeted obesity (n = 13), cardiovascular diseases (n = 8), and diabetes (n = 6). Intervention strategies included instructional education/counseling (n = 20), workplace environmental change (n = 6), physical activity (n = 10), use of technology (n = 10), and incentives (n = 13). Self-reported data (n = 21), anthropometric measurements (n = 17), and laboratory tests (n = 14) were used most often in studies with outcome evaluation. This is the first literature review to focus on interventions for employees with elevated risk for chronic diseases. The review has the potential to inform future workplace health interventions by presenting strategies related to implementation and evaluation strategies in workplace settings. These strategies can help determine optimal worksite health programs based on the unique characteristics of work settings and the health risk factors of their employee populations.

• 대한음성학회:학술대회논문집
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• 대한음성학회 1997년도 7월 학술대회지
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• pp.176-178
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• 1997

To make a long story short I made up my mind to experiment with a multimedia approach to my classroom presentations two years ago because my ways of giving instructions bored the pants off me as well as my students. My favorite ways used to be sometimes referred to as classical or traditional ones, heavily dependent on the three elements: teacher's mouth, books, and chalk. Some call it the 'MBC method'. To top it off, I tried audio-visuals such as tape recorders, cassette players, VTR, pictures, and you name it, that could help improve my teaching method. And yet I have been unhappy about the results by a trial and error approach. I was determined to look for a better way that would ensure my satisfaction in the first place. What really turned me on was a multimedia CD ROM title, ELLIS (English Language Learning Instructional Systems) developed by Dr. Frank Otto. This is an integrated system of learning English based on advanced computer technology. Inspired by the utility and potential of such a multimedia system for regular classroom or lab instructions, I designed a simple but practical multimedia language learning laboratory in 1994 for the first time in Korea(perhaps for the first time in the world). It was high time that the conventional type of language laboratory(audio-passive) at Hahnnam be replaced because of wear and tear. Prior to this development, in 1991, I put a first CALL(Computer Assisted Language Learning) laboratory equipped with 35 personal computers(286), where students were encouraged to practise English typing, word processing and study English grammar, English vocabulary, and English composition. The first multimedia language learning laboratory was composed of 1) a multimedia personal computer(486DX2 then, now 586), 2) VGA multipliers that enable simultaneous viewing of the screen at control of the instructor, 3) an amplifIer, 4) loud speakers, 5)student monitors, 6) student tables to seat three students(a monitor for two students is more realistic, though), 7) student chairs, 8) an instructor table, and 9) cables. It was augmented later with an Internet hookup. The beauty of this type of multimedia language learning laboratory is the economy of furnishing and maintaining it. There is no need of darkening the facilities, which is a must when an LCD/beam projector is preferred in the laboratory. It is headset free, which proved to make students exasperated when worn more than- twenty minutes. In the previous semester I taught three different subjects: Freshman English Lab, English Phonetics, and Listening Comprehension Intermediate. I used CD ROM titles like ELLIS, Master Pronunciation, English Tripple Play Plus, English Arcade, Living Books, Q-Steps, English Discoveries, Compton's Encyclopedia. On the other hand, I managed to put all teaching materials into PowerPoint, where letters, photo, graphic, animation, audio, and video files are orderly stored in terms of slides. It takes time for me to prepare my teaching materials via PowerPoint, but it is a wonderful tool for the sake of presentations. And it is worth trying as long as I can entertain my students in such a way. Once everything is put into the computer, I feel relaxed and a bit excited watching my students enjoy my presentations. It appears to be great fun for students because they have never experienced this type of instruction. This is how I freed myself from having to manipulate a cassette tape player, VTR, and write on the board. The student monitors in front of them seem to help them concentrate on what they see, combined with what they hear. All I have to do is to simply click a mouse to give presentations and explanations, when necessary. I use a remote mouse, which prevents me from sitting at the instructor table. Instead, I can walk around in the room and enjoy freer interactions with students. Using this instrument, I can also have my students participate in the presentation. In particular, I invite my students to manipulate the computer using the remote mouse from the student's seat not from the instructor's seat. Every student appears to be fascinated with my multimedia approach to English teaching because of its unique nature as a new teaching tool as we face the 21st century. They all agree that the multimedia way is an interesting and fascinating way of learning to satisfy their needs. Above all, it helps lighten their drudgery in the classroom. They feel other subjects taught by other teachers should be treated in the same fashion. A multimedia approach to education is impossible without the advent of hi-tech computers, of which multi functions are integrated into a unified system, i.e., a personal computer. If you have computer-phobia, make quick friends with it; the sooner, the better. It can be a wonderful assistant to you. It is the Internet that I pay close attention to in conjunction with the multimedia approach to English education. Via e-mail system, I encourage my students to write to me in English. I encourage them to enjoy chatting with people all over the world. I also encourage them to visit the sites where they offer study courses in English conversation, vocabulary, idiomatic expressions, reading, and writing. I help them search any subject they want to via World Wide Web. Some day in the near future it will be the hub of learning for everybody. It will eventually free students from books, teachers, libraries, classrooms, and boredom. I will keep exploring better ways to give satisfying instructions to my students who deserve my entertainment.

• 과학교육연구지
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• 제37권1호
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• pp.203-220
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• 2013

2007년 개정 과학과 교육과정에서는 학생들의 창의성을 함양하고, 자기 주도적 학습의 기회를 가지며, 과학에 대한 흥미와 동기를 유발하여 과학 관련 진로 모색으로 이어질 수 있도록 '자유 탐구'를 신설하였다. 이 연구에서는 2007년 개정 과학과 교육과정과 2009년 개정 과학과 교육과정에 명시된 '자유 탐구'가 중학교 과학 교과에서 적용되고 있는 실태를 과학 교사 대상 설문 조사 및 교사와 학생 대상 면담을 통하여 고찰하였다. 2010학년도에 '자유 탐구'를 운영했다는 응답 비율은 49.6%였고, 2011학년도 1학기에 '자유 탐구'를 운영했다는 응답 비율은 34.1%였다. '자유 탐구'를 적용한 기간에 대해서는 한 학기라고 응답한 경우, '자유 탐구'의 주제 선정 방법으로는 학생들이 탐구하고 싶은 주제를 선정한 경우가 가장 많았다. '자유 탐구'의 주제와 관련된 아이디어는 주로 과학 교과서 또는 교사용 지도서에서 가장 많이 찾으며, 한 소집단은 주로 4명으로 구성한다는 응답이 가장 많았다. 소집단을 구성한 방식은 친한 친구들끼리 학생들이 정하거나 학생들의 성별, 능력 등을 고려하여 교사가 정한 경우가 많았다. '자유 탐구' 운영을 통해서 학생들에게 나타난 효과로, 과학에 대한 흥미와 관심이 향상되었다는 응답이 가장 많았고, 과학 탐구 능력과 자기 주도 학습 능력이 향상되는 응답도 많았다. '자유 탐구'를 수행한 학생들은 활동이 재미있었고 또 하고 싶다고 응답하였다. '자유 탐구'를 운영할 때 겪은 어려움으로는, '자유 탐구' 지도에 시간과 노력이 많이 든다는 응답이 가장 많았고, 학생들의 과학 탐구 능력, 흥미와 관심이 부족하다는 응답도 많았다. '자유 탐구'를 운영하지 않는 이유로는 '자유 탐구'를 운영할 시간이 부족하다는 응답이 가장 많았고, '자유 탐구'를 반드시 운영해야 된다고 생각하지 않는다는 응답도 많았다. '자유 탐구'가 제대로 운영되기 위해서 가장 시급하게 해결되어야 할 것으로는, '자유 탐구' 지도 방법 관련 자료 및 학생들이 참고할 자료의 개발 및 보급, '자유 탐구' 운영 시간 증대, 학급 당 학생 수 감축 등의 응답이 많았다. '자유 탐구'를 현장에 효과적으로 적용하기 위해서는 인턴 교사, 실험 조교 등의 인력 보강, 관련 자료의 개발 및 보급, 교사의 인식 제고 등이 필요하다.

• 대한화학회지
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• 제62권1호
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• pp.52-63
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• 2018

이 연구에서는 20명의 1학년 예비교사들이 탐구화학실험을 수행하면서 겪는 어려움에 어떻게 대응하는가를 분석하고, 탐구실험의 수행이 예비 교사들의 탐구수행능력 및 인식론적 목표와 고려에 어떤 변화를 주었는지 살펴보았다. '화학 지식을 실험에 적절히 적용하지 못함', '참고자료에 대한 강한 의존성' 및 '결과에서 나타난 현상에만 집중' 과 같은 특성은 탐구수행을 방해하였으나, 일부 조에서의 활발한 토의는 관련 화학 개념 및 실험 설계의 오류를 재고찰 하는 기회로 작용하여 장애를 극복하는데 도움을 주었다. 또한 활발하게 토론에 임한 학생들은 실험안에서 분담한 역할만 수동적으로 수행하는 것에서, 새로운 아이디어를 내고 그 아이디어에 대한 책임감을 갖고 실험 성공을 위해 노력해야 한다는 지식 생성을 위한 능동적인 인식론적 주체로서의 발전을 보였다. 이에 본 연구는 처음부터 완전한 자유탐구로 탐구실험 수업을 진행하는 것보다 예비교사의 수준을 고려하여 서서히 자유도를 높여가는 비계의 적용이 효과적임을 제안한다. 또한 본 연구에서 활발한 논의는 효과적이었지만 일부 조에서만 이루어졌으므로, 실험 수행 시 토론을 활발하게 하고 책임감을 높일 수 있도록 하는 비계의 도입이 탐구실험수업 설계에 고려되어야 할 것으로 보여진다.