• 제목/요약/키워드: understanding level of special relativity

검색결과 3건 처리시간 0.02초

심층 면담을 통한 고등학생들의 특수 상대론 기초 개념에 대한 이해 수준 분석 (An Analysis of High School Student's Understanding Level about Basic Concepts of Special Relativity through in-depth interview)

  • 김재권;정진규;김영민
    • 과학교육연구지
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    • 제38권3호
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    • pp.569-584
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    • 2014
  • 본 연구의 목적은 고등학생들이 특수 상대론에 대한 이해 수준을 심층면담을 통해 알아보는 것이다. 심층 면담 대상은 8명으로 특수 상대론 기초개념 성취도 체크리스트와 광속불변의 법칙, 상대성의 원리, 동시성의 상대성, 차고 역설, 로켓 역설 등 6가지 상황 단계로 구성하여 심층 면담을 실시하고 분석하였다. 학생들은 특수 상대론과 관련된 단순한 현상의 기억, 개념의 암기 수준에서는 비교적 높은 성취도를 보였으나, 특수 상대론을 설명하는 본질적 원리 이해 수준에서는 낮은 성취를 나타냈다. 심층 면담에서 일부 학생들은 사건의 순서를 관찰자의 직관에 의존하였고, 좌표계를 수학적인 관점에서만 이해하고 실제 상황에서 판단하는 데에는 어려움을 나타냈다. 그리고 관성좌표계를 이해하지 못한 학생들은 상대론적 역설을 자신의 직관으로 설명하였고 학습자 혼돈이 발생하였다. 마지막으로 고등학생들이 형식적 조작기에 속하는 연령이지만 개인적 차이에 의해 시공간의 현상을 이차원 평면에 그리는 활동을 어려워하는 학생들도 있었다.

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중등학생의 특수상대론 학습에서 VR과 사건도표를 이용한 수업방법의 제안 (A Proposal of a Teaching Method using Virtual Reality and Event-Diagram for Secondary Student's Understanding of Basic Concepts in Special Relativity)

  • 김재권;김영민
    • 과학교육연구지
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    • 제35권2호
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    • pp.283-294
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    • 2011
  • 이 연구는 개정된 물리교과서에 포함된 현대물리학 소재인 특수 상대성 이론에 대해 고등학생의 인지 수준을 고려하고 학습자의 주도적 수업참여를 구현하기 위하여 '가상현실'과 '사건도표' 활동이 포함된 수업방법을 고안하여 그 효과를 정량적이고 정성적으로 분석하는 데 목적이 있다. 특수상대론 개념 학습 프로그램을 통한 수업과 전통적 수업은 선택 후 설명식 문항의 전반적인 성취도에서 유의미한 차이를 나타내지 않았다. 프로그램 수업을 이수한 학생은 복합 개념 형 문항의 성취도는 유의미하게 높게 나타났다. 특수 상대론적 역설문제에서는 프로그램 수업집단은 전통적 수업집단보다 통계적으로 유의미하게 높은 성취도를 나타내었다. 프로그램 수업집단 학생들은 역설문제 해결과정에서 특수 상대론적 현상을 좌표계의 틀 위에서 객관적으로 설명하는 좌표계 의존 형 문제 해결방식의 특성을 나타내었다. 전통적 수업집단의 학생들은 특수 상대론적 현상을 불완전하거나 잘못된 좌표계 개념으로 설명하였고 사건의 순서를 관찰자의 직관에 의존하여 판단하는 관찰자 의존형 문제 해결방식을 나타내었다. 특수 상대론적 효과가 시각화된 영상을 보고 사건도표라는 가상의 시공간을 노트에 그려보고 생각하는 활동은 학생들에게 도약판을 만들어 주는 하나의 방법으로 제안한다.

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어촌지도사업의 평가 (An Evaluation on the Operating of Fisheries Extension Services)

  • 최정윤
    • 수산경영론집
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    • 제17권2호
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    • pp.65-106
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    • 1986
  • 1, The Purpose of Study This is a study on the Evaluation of the operating of Fisheries Extension Services of Korea, for performing the activities such as guiding fisheries technique as well as offering industrial information to the fishermen in fishing village. By doing so, the Fisheries Extension Sevices(FES) can materialize the continued growth of fisheries, the social and economic development of fishing village, and the increase in income by enhancing the knowledge level of Fishermen, etc. In performing fisheries policy, this activity plays a great role on the research and development activity, and it has become practical since 1976 in Korea. In order to meet immediately with the problem of fisheries technical innovation and rapid environmental changes surrounding the fisheries, the fishermen should not only enhance their scientific and comprehensive capacity in fisheries technique but abtain various effective information. Generally, as most of all the fishemen are poor in the managerial structure and scattered in fishing villages, they have little opportunity in the contact of information. As a result, it is nessessary for the FES to perform the fishing business by the extension service officials who has received special training and acquired fisheries know-how in these fields. And yet, FES is under the unfullfilled circumstance in such factors as manpower, technical know-how, equipment, and the service system etc., which is required in promoting the social, economic development of fishing village and in resolving the high technique demand of fisherman. This study on the fisheries extension services have been studied from those backgrounds. 2. Research Method The data of collecting methods which were necessary in carrying out this study was adopted by the questionaire research on the present extension service activity, through the subject of the extension services (driving agency of the work and the officials), the object(fishemen) and the 3rd observers to the extension services (the authorities concerned). The research sample was taken by the sampling extraction of total 1, 774 men from the above 3 groups. And the research was carried out from August, 1986 to October, 1986, supported from the Fisheries Extension Office (FEO) located in field during the research process. In this study, the levels of the extension operating were determined and estimated in accordance with the extension service method, morale of extension service officials and the extension service system, etc. through the collected data of the research questionaire paper. And based on this result, the essential conditions of the extension services were grasped, and also we tried to present the various activity plan necessary to promote the operating of the extension services. The questionaire research data was calculated by the computer center of National Fisheries University of Pusan, and the total result was again tried on the one demension analysis along with two dimension analysis to search out the relativity between the questionaire, and the statistical test was done $\chi$$^2$test in significance level of l~5%. 3. Contents of Study This study consists of 7 chapters and the contents are as follows : Chapter I : The object and method of the study Chapter II : The assessment and analysis of the extension services Chapter III : The contents and method of the extension services Chapter IV : Analysis of the essential conditions for the extension services Chapter V : The evaluation of activities of extension services Chapter Ⅵ : Conclusion.4. Results and RecommendationTherefore, the results of this study estimated by logical process and analysis are as follows : 1) Most of Korean fishing villages and coastal fishermen have shown much concerns about fisheries technique and social changes, thus many of them were confronted with new problems on how to adapt and to meet changes. 2) Majority of fishermen estimated FEO as an organization of specific technologies with all the thing concerning the fisheries technique in general. Therefore the fishermen wanted to utilize the FEO as an adaptable method for the modern fisheries techniques as well as the environmental changes. 3) In contrast with the fast changes of the fisheries technique, the complexity and variety of technical system and the broadness of fishing village and fishermen, it was revealed that the necessary factors such as the facilities, manpower, budget, and the level of applying techniques of the FEO located in field were highly insufficient. Accordingly, the guiding efficiency was low and the extension services did not provide full solution to the various request from fishermen. 4) It is possible to classify the activation factor for the extension service into two large dimension ; personal dimension relevant to guidance officials and work dimension relevant to the organization. And it was found that the activation level of the work dimension was far lower than the personal dimension between them. So, the activation should be done first in the dimesion to promote the activation of the extension services. 5) The extension services officials are now demoralized in general, thus it is necessary to take reality into consideration : the expense of activity, the adequate endowment of activity scope and the reasonable operation of the position class, etc to enhance its morale. However, in order to do the FES activation, first of all, the systems should be established which is lain unsettled stage until now. And there must be change in the understanding of government i.e. the fisheries extension services are the essential policy subject to build up the base of fisheries growth and modernize the fisheries management. And it should be driven positively with the recognition of the "lasting project".g project".uot;.

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