• 한국수학교육학회지시리즈A:수학교육
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• 제41권3호
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• pp.273-289
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• 2002

It tends to be emphasized that mathematics is the important discipline to develop students' mathematical reasoning abilities such as deduction, induction, analogy, and visual reasoning. This study is aimed for investigating the present state about mathematical reasoning in secondary school. We survey teachers' opinions and analyze the results. The results are analyzed by frequency analysis including percentile, t-test, and MANOVA. Results are the following: 1. Teachers recognized mathematics as knowledge constructed by deduction, induction, analogy and visual reasoning, and evaluated their reasoning abilities high. 2. Teachers indicated the importances of reasoning in curriculum, the necessities and the representations, but there are significant difference in practices comparing to the former importances. 3. To evaluate mathematical reasoning, teachers stated that they needed items and rubric for assessment of reasoning. And at present, they are lacked. 4. The hindrances in teaching mathematical reasoning are the lack of method for appliance to mathematics instruction, the unpreparedness of proposals for evaluation method, and the lack of whole teachers' recognition for the importance of mathematical reasoning

• 한국초등과학교육학회지:초등과학교육
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• 제34권1호
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• pp.58-71
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• 2015

Ability of understanding students' ideas and thinking is critical to teachers' professional growth. In this study, 'pedagogical reasoning' was conceptualized as teachers' reasoning ability of students' misconceptions and possible causes of misconceptions when they hear and observe students' science discourses. To investigate elementary pre-service teachers' pedagogical reasoning levels, children's science discourses on light reflection and electric circuit were video recorded and 43 pre-service elementary teachers were asked to identify children's misconceptions and possible causes of misconceptions after watching the video clips. In conclusion, pedagogical reasoning levels of pre-service elementary teachers were not high enough, showing significant difference in light reflection and electric circuit. Possible explanations of this difference and educational implications were discussed.

• 대한수학교육학회지:수학교육학연구
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• 제19권1호
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• pp.81-98
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• 2009

본 연구는 초등학교 6학년 학생들의 양적 추론의 특성을 그 유형과 표현 방식의 특성에 기초하여 분석하였다. 먼저 검사지를 통해 양적 추론의 특성을 관찰하기에 적합한 초등학교 6학년 학생 3명을 선정한 후, 문제 해결 과정에 대한 학생들의 사고 전략과 의미 도출 과정에 대한 심층 면담을 실시하였다. 3명의 학생은 문제 해결 과정에서 다른 양적 추론 유형을 사용하였으며, 그에 따라 다른 전략적 특성이 관찰되었으며, 특히 그 추론 수준이 달라서 동일한 문제해결 전략을 사용하더라도 그 세부 양상이 달랐다. 학생들은 또한 시각적 언어적 기호적 표현을 각기 다른 목적과 기능으로 활용하였다. 특히 시각적 표현은 문제 상황에 포함된 양과 그 관계를 표현하고 이를 바탕으로 새로운 관계를 추론하는 양적 추론의 과정에서 가장 큰 역할을 하고 있는 것으로 파악되었다. 연구 결과를 바탕으로 문장제 해결에서 양적 추론의 역할과 초기 대수의 도입에 관한 논의점을 도출하였다.

• 한국가정과학회지
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• 제4권1호
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• pp.26-35
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• 2001

The Purpose of this study was to examine the difference among peer orientation according to socio-demographic variables and mothers' rearing behavior of early adolescents and to analyze the effect of these variables influencing peer orientation. The subjects were 399 students-sixth grade and second grade in middle school students, living in Gwangju. The major findings were as follows : 1. Peer orientation of early adolescents showed partial differences according to the socio-demographic variables and mothers' rearing behavior. Peer advice seeking showed significant difference according to child's grade, reasoning guidance, affection and active-education of mother. And extreme peer orientation was difference in the child's grade, sex. family type, reasoning guidance and over-protection of mother. 2. The order in the effective power of variables on peer orientation of early adolescents was as following. Peer advice seeking was influenced by the child's grade and affection that were explained about 21%. And extreme peer orientation was influenced by reasoning guidance. over-Protection. the child's sex, and family type that were explained about 17%. In conclusion, Mothers' rearing behavior was influenced on peer orientations. Above all children's peer orientations are need for the improvement mothers' behavior reasoning guidance. affection.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제25권3호
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• pp.537-556
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• 2011

본 연구에서는 최근 초등 수학에서 중요시 되고 있는 비례 추론에 초점을 두고 비례 문제를 해결하는 과정에서 학생들의 학업성취도에 따른 비례 추론 능력과 비례 추론 전략 사용의 특징을 분석하였다. 이를 위하여 초등학교 6학년 173명을 대상으로 다양한 유형의 비례 문제를 제시하고 최대 세 가지 추론 전략을 사용하여 해결하도록 하였다. 그 결과 상위권 학생들이 하위권 학생들보다 다양한 비례 추론 전략을 활용하고, 표현하고, 인식하는 능력이 뛰어남을 알 수 있었다. 또한 학생들이 선호하는 비례 추론 전략은 학업성취도에 따라서는 별 차이를 보이지 않았으나 문제 유형과 문제에 제시된 숫자들의 비에 따라 차이가 있는 것으로 나타났다. 이를 통해 학생들의 학습 수준에 따른 능력 차이를 반영하여 적절한 비례적 추론 지도가 필요함을 알 수 있었다.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제2권2호
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• pp.113-131
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• 1998

The purpose of this study is to investigate the relationships among affective characteristics, mathematical problem-solving abilities, and reasoning abilities of the 6th graders for mathematics, and to analyze whether the relationships have any differences according to the regions, which the subjects live. The results are as follows： First, self-awareness is the most important factor which is related mathematical problem-solving abilities and reasoning abilities, and learning habit and deductive reasoning ability have the most strong relationships. Second, for the relationships between problem-solving abilities and reasoning abilities, inductive reasoning ability is more related to problem-solving ability than deductive reasoning ability Third, for the regions, there is a significant difference between mathematical abilities and deductive reasoning abilities of the subjects.

• 아동학회지
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• 제34권1호
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• pp.21-34
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• 2013

The purposes of this study were (1) to investigate the differences in the level of children's knowledge and reasoning skills due to the sloping phenomenon according to their ages and the types of tasks they were asked to perform, and (2) to investigate whether children's prior knowledge is changed to post knowledge through their reasoning. A total of 120 subjects, forty from each of the age groups 4, 6 and 8 were selected for the study. The major findings are presented below : 8-year old children showed higher levels of prior knowledge than 6-year old children. The prior knowledge level of the "size" task was higher than that of the "weight" task. 6-and 8-year old children showed higher levels of reasoning than 4-year old children. The reasoning level of the "size" task was higher than that of the "weight" task. 6-and 8-year old children showed higher levels of post knowledge than 4-year old children. However, there was no difference in children's post knowledge according to task difference. Through the different types of reasoning involved in the children's performances of the two tasks, changes in the prior knowledge of the sloping phenomenon were observed among all age groups.

• 한국정보통신학회논문지
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• 제14권7호
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• pp.1551-1556
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• 2010

본 논문에서는 굴곡에 의한 조도량의 차이와 명암도 차이를 퍼지 기법에 적용하여 개선된 반도체 불량 검출 방법을 제안한다. 제안된 방법은 먼저 회전각과 양선형 보관법을 이용하여 반도체 영상의 각도를 보정하는 전처리 과정을 수행한다. 그리고 굴곡에 대한 조도량의 차이와 패턴 매칭을 이용하여 얻어진 오류 영역의 명암도 차이를 퍼지 소속 함수에 적용하여 결과 값을 추론한다. 최종적으로 비퍼지화된 결과 값을 적용하여 반도체의 초기 불량을 검출한다. 제안한 방법에서 실제 사용되는 반도체 정면 영상과 측면 영상 30쌍을 대상으로 실험한 결과, 기존의 방법에서 판단된 실제 불량 제품을 모두 검출하였다. 기존의 방법은 1mm내의 미세한 굴곡을 가진 정상 제품을 불량으로 판별하였으나 제안된 방법에서는 오류로 검출하지 않고 정상으로 판별하였다. 따라서 기존의 방법에 비해서 반도체의 초기 불량 판단에 효과적으로 적용될 수 있다는 것을 확인하였다.

• 인지과학
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• 제24권4호
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• pp.323-338
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• 2013

원인과 결과 간의 연결 강도에 관한 추정인 인과 추론에는 다수의 처리기제가 다른 처리 시점에 관여하며 따라서 이들 각각에 민감하게 작용하는 개인차 변인은 상이할 가능성이 크다. 특히, 조건부화와 절감 현상은 하나의 결과에 다수의 잠재원인이 존재할 경우 특정 원인과 결과 간의 인과 강도를 추정할 때 일어나는 주요현상에 해당한다. 본 연구에서는 맥락 민감도와 관련된 개인차 변인인 자기 해석을 조작하여 조건부화와 절감 현상에 어떠한 영향을 미치는가를 알아보았다. 그 결과 독립적 자기 조건과 상호의존적 자기 조건 간에는 조건부화 정도의 차이가 발견되지 않았다. 그러나 상호의존적 자기 조건이 더 높은 절감 현상을 보였으며 이는 조건부화와 절감 현상이 각기 다른 처리 기제임을 시사한다고 볼 수 있다.

• 아동학회지
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• 제34권6호
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• pp.1-11
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• 2013

The purpose of this study was to investigate the process of counterfactual reasoning which children undergo, based on mental model theory and dual process theory. The subjects were 120 four-year-olds and 120 five-year-olds from Ulsan. Counterfactual reasoning task conditions were created, including task type and content, which were type 1-specific, type 1-general, type 2-specific, type 2-general. There were two stories used for each task condition. Children's counterfactual reasoning score range was 0 to 8. Data were analyzed using SPSS by mean, standard deviation, one sample t-test, repeated measures of Anova. The results of this study were as follows. First, children's counterfactual reasoning was above chance level regardless of the task condition. Second, children's counterfactual reasoning was lowest when type 1-specific or type 2-specific tasks were given, slightly higher when type1-general tasks were given, and the highest when type 2-general tasks were given. There was no significant difference between 4-year-old and 5-year-old children's counterfactual reasoning.