• School Mathematics
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• v.10 no.3
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• pp.463-487
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• 2008

The purpose of this study was to analyze teachers' pedagogical content knowledge on probability. Teachers' pedagogical content knowledge on probability was analyzed in detail into 2 categories: (a) subject matter knowledge, (b) knowledge of students' understanding and misunderstanding. The results showed, in terms of the subject matter knowledge, that the teachers have some probability misconception. And, it showed, in the point of the knowledge of students' understanding, they could not explain why students have difficulties to solve some tasks with regard to probability. This study raised several implications for teachers' professional development for effective mathematics instruction.

• Journal of The Korean Association For Science Education
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• v.40 no.3
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• pp.347-358
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• 2020

He purpose of this study is to design and apply a pilot assessment tools for scientifically gifted and talented elementary school students with lower grades. The assessment tool consists of three parts: homeroom teachers' recommendation, paper and pencil test and performance tests. The tools are verified whether they are suitable for unique characteristics of young children and enable to attract active participation. For suitability check, students' performance tests were inductively analyzed and 30 behavioral patterns were shown which were included and partially exceeded the level of lower elementary students' performance expectation in NGSS. As a result, we concluded that assessment tool developed in this study will be effective in discriminating young pupils' scientific talents. Then for participation check, we compared the number of coding references as an indicator of participation. Two cases were found that students with high interest participated passively in performance tests. We found these 'passive participants' had excessive scientific experiences and extremely narrow region of interest, during the process of complex interpretation between the results of this assessment tool and in-depth interviews with homeroom teachers. We found out in this study that newly developed tools can be used in school scene after modifying and elaboration through accumulation of more case studies.

• Journal of the Korean Chemical Society
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• v.46 no.3
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• pp.279-286
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• 2002

The purpose of this study was to investigate undergraduate students' preconception about the needed knowledge to understand organic reactions based on electron flow and undergraduate students' ability that understand fundamental chemical reaction based on electron flow, and was to offer pertinent teaching and learning method. For this study, 18 sophomores that majored in chemistry education of H University, were sampled. Test papers were newly developed that based on previous research. Undergraduate students' response was classified and reasons of the response were qualitatively analyzed by interview. According to the results of this study, it was found that undergraduate students had good understanding on the concept about the electron configuration of atoms and on the concepts about the needed knowledge to understand chemical reactions based on electron flow. But they didn't apply the concepts to the fundamental chemical reaction. Therefore, teaching and learning strategy that apply the needed concepts to understand chemical reactions based on electron flow to chemical reactions should be developed.

• Journal of the Korean Society for Computer Game
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• v.31 no.4
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• pp.1-8
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• 2018

The present study investigated the validity of a serious game named 'Draw Ttoring' developed for accessment of children's attention and tried to provide the basic information about it. To this goal, we tested it to 284 elementary school students in measuring various behavior data(reaction time, total playing time, correct rate, discrepancy between type of TMT). Futhermore, the behavior data was compared with academic achievement to see the external validity. In results, 'Draw Ttoring' showed various behavior data and correlation with academic achievement. In Type A of TMT, total time and reaction time had a correlation with academic achievement, while, in Type B of TMT, total time and correct rate did. Mental flexibility calculated by the discrepancy between Type A and Type B showed also the positive correlation with academic achievement. These results showed that the serious game named 'Draw Ttoring' can provide more various information about children attention and these can't be observed by traditional paper pencil test. Finally, serious game can provide an good alternative method to access children's cognition.

• Proceedings of the Korean Society of Computer Information Conference
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• 2014.07a
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• pp.381-382
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• 2014

교원의 핵심 역량 중 지식 역량이나 수행 역량 등은 교직과정 이수 결과의 확인이나 지필 시험 또는 실기 시연 등을 통해 확인 또는 평가할 수 있다. 그러나 태도 역량이나 전문성 개발역량의 일부 요소들은 별도의 도구나 평가로 심사해야 된다. 전문성 개발 역량 가운데 자기반성 노력, 지속적 학습 노력, 교육 공동체 간 의사소통 및 협력 등의 요소들은 기존의 평가 방식으로 파악하기 어렵다. 따라서 교원의 핵심 역량을 평가하기 위해서는 교직 적성 및 인성 검사와 같은 별도의 도구가 필요하다. 본 논문은 교원자격을 강화하기 위한 교직 적성 및 인성 검사를 효율적으로 실시하기 위한 온라인 웹 검정 시스템을 설계하고자 한다.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.05b
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• pp.401-404
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• 2003

현재 특수교육이나 작업치료에서 사용되고있는 시지각 발달검사 도구들은 종이에 인쇄된 형식으로 지필식 방법을 사용한다 검사과정에 치료사나 심리상담사들의 개별적인 설명 및 지도가 필요하며, 시지각의 반응시간과 공간 지각능력 등의 정확한 측정이 어렵고, 검사결과에 대한 분석 또한 수작업으로 이루어지고 있어 한계성의 문제가 제기된다. 본 논문은 웹 기반 시지각 진단 프로그램의 개발을 위해 먼저, 시지각 진단프로그램 모형 구성을 위한 제 요소 및 신뢰도의 타당성을 입증하기 위한 변인들을 추출하고자 한다. 이를 통해 시지각 진단 분석결과의 컴퓨터 처리 및 데이터 축적을 통한 업무 자동화의 효과와 시지각 진단 평가의 한국형 표준화 작업을 기대할 수 있다.

• Communications of Mathematical Education
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• v.13 no.1
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• pp.161-167
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• 2002

본 연구의 목적은 초등학생들이 자신의 전제 해석 유형에 따라 일정한 추론 결과를 내는가를 알아봄으로서, 초등학생들이 일정한 법칙에 따라 사고하는가를 알아보고자 하는데 있다. 지필 검사와 면담을 통해 24명의 대상아동 중 20명(83%)이 자신의 전제 해석 유형에 따라 일정한 추론 결과를 내고 있음을 알 수 있었다. 이를 통해 초등학생의 추론 과정은 일정한 법칙을 따르고 있다는 것을 알 수 있었다. 산발적이라고 생각되는 초등학생의 답일지라도 면밀히 관찰해 보면 그들 나름의 일정한 법칙에 의해 산출한 답이었다. 이러한 사실은 사고의 결과 뿐 아니라 사고의 과정에 대한 깊은 관심이 필요하다는 것을 시사한다.

• Journal of Science Education
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• v.44 no.1
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• pp.38-49
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• 2020

The purpose of this study is to analyze the paper test items of high school physics I 'Space-Time and the Universe' unit and how similar the textbook goals are to the cognitive and content areas. This study analyzed paper test items used from nine high schools and KICE about the unit. In order to analyze the distribution of items, they were classified by contents and by cognitive level which is knowledge, comprehension and application levels. As conclusion, application level items were a few, and unbalanced contents distribution appeared in school items. In comparison through the ratio difference index, the objectives of the textbook and the school items were very similar, but the similarities were low when comparing the school items with the KICE items. Based on the above, we suggested some ways to increase the validity of test items.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.5 no.1
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• pp.162-171
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• 1994

Objects : This study was carried out to develop the Korean form of Leyton Obsessional Inventory-Child Version(LOI-CV) designed to assess the obsessive compulsive symptoms in children and adolescents. The LOI-CV was modified into a paper-and-pencil form in order to administer it to group. Methods : We applied the Korean form LOI-CV to 127 elementary, middle and high school children, and retest it to 82 children with 3 weeks interval. Together with LOI-CV, Korean form of SCL-90-R which had been proved its reliability and validity, were administered to the all subjects for examining of concurrent validity. And then we examined whether this scale discriminates between obsessive patients, psychiatric controls and normal controls in the level of obsessive symptoms. Results : Test-retest reliability, internal consistency were very satisfactory. Concurrent validity with SCL-90-R was moderate level. And obsessive patients was scored significantly higher than psychiatric and normal controls in the level of obsessive symptoms. In factor analysis, items are clustered to 5 factors. In the global obsessive symptom, obsessive scores of female elimentary school students were higher than that of male students. Conclusions : These results indicate that the Korean form of LOI-CV is reliable and valid self-rating scale to assess the obsessive-compulsive symptoms in Korean children and adolescents. Author suggests that future research is needed for Korean version standardization study in normal and clinic-refered population.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.985-988
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• 2005

CAT(Computerized Adaptive Testing)는 일반적인 지필 검사와는 다르게 짧은 시간에 최소한의 문항으로 수험자의 학습 성취도를 판단하는 방법이다. 기존에 제안된 PC기반 CAT 시스템을 활용하기 위해서는 시간과 장소의 제약이 존재했다. 최근에 모바일 기기의 수요가 증가하고 무선인터넷의 발전이 이루어지며 모바일 교육에 대한 활발한 연구가 진행되고 있는 추세에 맞추어 본 연구에서는 모바일 기기의 하나인 PDA를 기반으로 한 CAT 시스템을 구현하고 실행해 보았다. 그 결과, 언제 어디서나 효율적으로 수험자의 학습 성취도 측정이 가능하게 되었다.