• Journal of Elementary Mathematics Education in Korea
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• v.20 no.1
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• pp.105-129
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• 2016

The elements of mathematical processes include mathematical reasoning, mathematical problem-solving, and mathematical communications. Proportion reasoning is a kind of mathematical reasoning which is closely related to the ratio and percent concepts. Proportion reasoning is the essence of primary mathematics, and a basic mathematical concept required for the following more-complicated concepts. Therefore, the study aims to analyze the proportion reasoning ability of sixth graders of primary school who have already learned the ratio and percent concepts. To allow teachers to quickly recognize and help students who have difficulty solving a proportion reasoning problem, this study analyzed the characteristics and patterns of proportion reasoning of sixth graders of primary school. The purpose of this study is to provide implications for learning and teaching of future proportion reasoning of higher levels. In order to solve these study tasks, proportion reasoning problems were developed, and a total of 22 sixth graders of primary school were asked to solve these questions for a total of twice, once before and after they learned the ratio and percent concepts included in the 2009 revised mathematical curricula. Students' strategies and levels of proportional reasoning were analyzed by setting up the four different sections and classifying and analyzing the patterns of correct and wrong answers to the questions of each section. The results are followings; First, the 6th graders of primary school were able to utilize various proportion reasoning strategies depending on the conditions and patterns of mathematical assignments given to them. Second, most of the sixth graders of primary school remained at three levels of multiplicative reasoning. The most frequently adopted strategies by these sixth graders were the fraction strategy, the between-comparison strategy, and the within-comparison strategy. Third, the sixth graders of primary school often showed difficulty doing relative comparison. Fourth, the sixth graders of primary school placed the greatest concentration on the numbers given in the mathematical questions.

• Communications of Mathematical Education
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• v.14
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• pp.327-348
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• 2001

본 연구는 수학 교사가 수학 교과에 대한 학습부진 학생의 이해와 적절한 교수-학습 방법의 탐색을 위한 기초 자료를 제공하기 위해 두 가지 유형의 질적 자료를 중심으로 자료를 수집하고 심리검사, 일반 학습습관, 수학 학습습관, 수학 교과에 대한 태도 등 4가지 선문지를 사용하여 여고생을 대상으로 부진요인 분석에 그 목적을 두었다. 본 연구에 따르면 대표적인 부진 요인은 의문 해결을 위한 의지 결핍과 장기 기억방법을 알지 못하고 수학교과목 자체를 싫어하는 경향이 있는 듯 하였다. 스스로 수학 문제를 풀 수 없다는 선입감 때문에 해답을 보고 문제를 풀게 되고, 검산을 하지 않는 특성을 보였다. 이들 수학 학습부진 학생들을 지도할 때는 선수학습을 반드시 확인하는 수업을 고려해야 하며, 수학적 의사 소통 능력 등 보다 수학적인 내용과 과정에 대한 후속 연구가 필요하다고 본다.

• Journal of Elementary Mathematics Education in Korea
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• v.14 no.2
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• pp.401-420
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• 2010

The purpose of this research is to find out effectiveness of geometry learning through spatial reasoning activities on mathematical problem solving ability and mathematical attitude. In order to proof this research problem, the controlled experiment was done on two groups of 6th graders in N elementary school; one group went through the geometry learning style through spatial reasoning activities, and the other group went through the general geometry learning style. As a result, the experimental group and the comparing group on mathematical problem solving ability have statistically meaningful difference. However, the experimental group and the comparing group have not statistically meaningful difference on mathematical attitude. But the mathematical attitude in the experimental group has improved clearly after all the process of experiment. With these results we came up with this conclusion. First, the geometry learning through spatial reasoning activities enhances the ability of analyzing, spatial sensibility and logical ability, which is effective in increasing the mathematical problem solving ability. Second, the geometry learning through spatial reasoning activities enhances confidence in problem solving and an interest in mathematics, which has a positive influence on the mathematical attitude.

• Education of Primary School Mathematics
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• v.19 no.1
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• pp.31-45
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• 2016

In this study, the case of error became the object of learning, and the investigator applied these cases to an actual class and established three study problems in order to achieve the purpose of this study. The results of analysis of students' errors in figure based on before achievement test are shown as follows: First, the most errors occurred in the figure was the ones from deficient mastery of prerequisite concepts and definitions. Specially, the errors from deficient mastery of prerequisite concepts and definitions have the majority. it is very high ratio even if it considers an influence of an evaluation question item. so, I think it is necessary to teach concept related figure above all. Second, as the results of application 'finding errors' to a class, there is a meaningful difference in the mathematical achievement and reasoning ability within significance level 5%. This means 'finding errors' is one of the teaching method that it develops the mathematical achievement and reasoning ability.

• Communications of Mathematical Education
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• v.27 no.2
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• pp.99-119
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• 2013

This study investigated the schemes to apply key competencies to middle school math teaching. Key competencies (KCs, hereafter), however, have been discussed only at the national-level general curriculum. Through the survey with mathematics educators, we selected key competencies that can be better developed through mathematics subject. We investigate ways to apply key competencies into math teaching and learning with the math-talented students who usually lack interpersonal skills and communication skills. Along with KC goals, we selected graphs (or graphing skills in math contents) as learning goals, and we designed and implemented competency-based instruction for the gifted. Through participant observation of math teaching and learning, we identified students' improvement in interpersonal skills and communication skills. We also identified students' skill development in other key competencies such as creativity, problem solving, information processing skills, etc., which can be developed through mathematics teaching and learning. Through this study, we found out that key competencies can be developed through mathematics teaching and we need in-depth studies on this matter.

• Journal of the Korea Convergence Society
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• v.13 no.4
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• pp.39-44
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• 2022

Mathematics franchise education companies are developing various online learning systems to provide on-off integrated education to learners. Most online learning systems deliver one-way lecture content to learners and perform quantitative problem-solving learning for learning results. However, each learner has different academic achievement competencies, and it is impossible to determine exactly where the level of understanding fell when solving a math method. and based on this, establish an online learning system to discover the weak points of learners and propose an effective learner management method. Through the developed learning method and system, it is expected to cultivate balanced problem-solving ability for learners and provide differentiated brand image and counseling service to franchise companies.

• Proceedings of The KACE
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• 2018.08a
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• pp.25-27
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• 2018

교구에 대한 적절한 조작 및 탐구 활동은 수학의 개념과 원리를 이해하는 데 도움을 준다. 본 연구에서는 중학교 수학 교과 과정에 부합하는 함수의 개념과 성질에 대한 이해를 도울 수 있는 안드로이드 기반의 앱을 개발하였다. 개발한 앱은 앱인벤터(App Inventor) 2를 기반으로 사용자가 구체적인 함수 그래프를 그리도록 요구하는 것이 아니라 대략적인 개형을 이해하도록 하여 학습 부담 경감을 도모한다. 즉, 계산 능력 배양을 목표로 하지 않는 교수학습 상황에서 스팀 기반으로 공학적 도구를 이용하여 2015 개정 수학과 교수학습방법에서 요구되는 정보처리 능력 및 문제해결 능력을 함양시킬 수 있도록 학습 도구를 개발하였다.

• Journal of the Korean School Mathematics Society
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• v.10 no.3
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• pp.353-367
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• 2007

The purpose of this study was to examine what errors students made in solving word problems with figures and to compare the problem-solving abilities of boys and girls for each type of word problems with figures. It's basically meant to provide information on effective teaching-learning methods about world problems with figures that were given the greatest weight among different sorts of word problems. The findings of the study were as fellows: First, there was no difference between the boys and girls in the types of error they made. Both groups made the most errors due to a poor understanding of sentences, and they made the least errors of making the wrong expression. And the students who gave no answers outnumbered those who made errors. Second, as for problem-solving ability, the boys outperformed the girls in problem solving except variable problems. There was the greatest gap between the two in solving combining problems. Third, they made the average or higher achievement in solving the types of problems that were included much in the textbooks, and made the least achievement in relation to the types of problems that were handled least often in the textbooks.

• Journal of Educational Research in Mathematics
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• v.17 no.4
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• pp.359-380
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• 2007

This study was conducted with two 6-graders to identify how were their proportional reasoning abilities, whether they evolved proportional thinking in a various context, and what had influence on their proportional thinking. The findings, as previous researches noted, suggested that the proportional expression obtaining by instrumental understanding could not provide rich opportunities for students to improve understanding about ratio and proportion and proportional reasoning abilities, while being useful for determining the answers. The students were able to solve proportional problems with incorporating their knowledge of divisor, multiples, and fraction into proportional situations, but not the lack of number sense. The students easily solved proportional problems experienced in math and other subjects but they did not notice proposition in problems with unfamiliar contexts.

• Communications of Mathematical Education
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• v.13 no.2
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• pp.765-773
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• 2002

정육면체 27개를 면끼리 붙여서 7개의 조각을 만들어, 이것을 조합하여 3${\times}$3${\times}$3 정육면체가 되도록 하는 퍼즐로 소마큐브(Soma Cube)가 많이 알려져 있다. 이런 입체퍼즐은 공간지각력과 문제해결능력을신장시켜서 창의력을 키우는 데 매우 효과적이므로, 교육적 소재로서 수업에 활용하면 좋다. 이 웍샵에서는 소마큐브와 같은 원리를 갖지만 조각의 모양이 전혀 다른 조이큐브(Joy Cube)와 펀큐브(Fun Cube, Diabolic Cube)를 직접 만들어서, 이를 수업에 활용하는 방법을 소개하려고 한다. 조이큐브는 초등학교 고학년, 펀큐브는 전학년에서 활용이 가능하다.