• Journal for History of Mathematics
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• v.23 no.3
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• pp.141-168
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• 2010

Mathematical communication is necessary to exchange mathematical idea among participants in teaching-learning process. The promotion of mathematical communication competence is clearly stated in many parts of the 2007 revised curriculum. As a result, mathematical communication tasks are contained in 'high school Mathematics' textbook. At this point of time when increasing importance of mathematical communication is realized, we will check over mathematical communication and analyze communicative tasks corner in 'high school Mathematics' textbook in this paper And thereby we hope this study help prepare for practical communicative tasks corner suggesting a way for invigoration of mathematical communication.

• Education of Primary School Mathematics
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• v.25 no.2
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• pp.179-195
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• 2022

Mathematical communication competency, one of the six mathematical competencies emphasized in the latest mathematics curriculum, plays an important role both as a means and as a goal for students to learn mathematics. Therefore, it is meaningful to find instructional methods to improve students' mathematical communication competency and analyze their communication competency in detail. Given this background, this study analyzed 64 sixth graders' mathematical communication competency after they participated in the lessons of fraction division emphasizing mathematical communication. A written assessment for this study was developed with a focus on the four sub-elements of mathematical communication (i.e., understanding mathematical representations, developing and transforming mathematical representations, representing one's ideas, and understanding others' ideas). The results of this study showed that students could understand and represent the principle of fraction division in various mathematical representations. The students were more proficient in representing their ideas with mathematical expressions and solving them than doing with visual models. They could use appropriate mathematical terms and symbols in representing their ideas and understanding others' ideas. This paper closes with some implications on how to foster students' mathematical communication competency while teaching elementary mathematics.

• Journal of Elementary Mathematics Education in Korea
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• v.23 no.3
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• pp.305-321
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• 2019

Rapid demographic changes such as international marriages and immigration have led to the transition of Korea to a multicultural society, thereby causing the need for education for multicultural students. In particular, there is a growing need to support Korean Language Learners (KLLs) who learn in Korean in their classrooms and whose native language is a foreign language. This study aims to adapt some teaching strategies of the SIOP model developed in the U.S. for English Language Learners(ELLs) to fit classroom situations in Korea and apply them to the Korean language learners to analyze the features of mathematical communication and to examine the possibility of a change in mathematical errors. Specifically, three KLLs in 5th grade participated in seven geometry lessons adapting some characteristics of SIOP model and then, their mathematical communication and mathematical errors were analyzed. The results of this study are expected to provide didactical implications for identifying characteristics of KLLs and for setting direction for teaching them mathematics.

• Proceedings of the KIEE Conference
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• 2006.07d
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• pp.1935-1936
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• 2006

인간과 의사소통 및 상호작용함에 있어 휴머노이드 로봇은 그 외형이 인간에게 친숙해야 할 뿐만 아니라 그 행동역시 인간과 유사해야 한다. 인간의 상체 동작과 유사한 동작은 인간과의 의사소통에 있어 매우 중요하다. 인간의 동작과 유사한 동작을 수학적인 식을 통하여 생성해 내기는 매우 힘들다. 수학적 모델을 개발하려는 노력과는 달리 최근에는 모션캡쳐 장비로부터 동작데이터를 획득하고, 그 데이터를 휴머노이드 로봇에 입력하는 연구가 진행되어왔다. 하지만, 로봇과 인간이 의사소통함에 있어서 필요한 모든 데이터를 모션캡쳐 장비로 획득하여 저장해 놓기는 불가능 하다. 또한, 동작을 통하여 의미를 전달하는 의사소통의 경우에 상대방과 분위기에 따라 동작의 방향이나 크기를 달리할 필요가 있다. 이 논문에서는 의미가 있는 동작을 모션캡쳐 장비로부터 획득하고, 휴머노이드 로봇에 맞게 변환한 다음, 그 데이터를 상황에 맞게 실시간으로 변형하는 방법을 제안한다. 제안한 방법을 몇가지 동작에 적용하여 그 실효성을 검정하였다.

• Communications of Mathematical Education
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• v.27 no.3
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• pp.205-220
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• 2013

In this research, in order to investigate the principles for the development of mathematics textbook for decision-making based on storytelling, we conceptualized the educational meaning of decision-making and specified the principles and the methods for the textbook based on decision-making. We illustrated the principles and the methods by the cases from the model textbook for the conditional probability that we have developed. We discussed the implication for the future development and implementation of mathematics textbook for decision-making based on storytelling.

• Journal of the Korean School Mathematics Society
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• v.19 no.1
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• pp.103-122
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• 2016

The purpose of this study was to analyze the sentences related with mathematical modeling in the third and fourth grade mathematics textbooks in accordance with changing of Korean mathematics curricula. In the preliminary analysis, the researchers used the criteria that Kim(2010) had analyzed Mathematics in Context[MiC], and analyzed South Korean textbooks from the perspective of mathematical modeling. The researchers revised them for the analysis criteria among South Korean elementary mathematics textbooks and employed them as the analysis framework of the present study. From the mathematical modeling perspective, the study reached the following conclusions in accordance with the change of textbooks from the 7th curriculum to the 2009 revised curriculum. The contexts of real-world situations presented in the textbooks are increased in all areas except Probability and Statistics areas, the methods of expression of mathematical model are diversified in all areas except Patterns area, and the communication types are also diversified and frequencies increased in all areas except Patterns area. Based on this research, several suggestions were made for the development of future textbooks.

• Journal of the Korean School Mathematics Society
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• v.17 no.4
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• pp.657-677
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• 2014

The present qualitative case study explored the ways in which three middle school students constructed and refined their mathematical models and modeling processes, and factors that had influenced such refinement. The results suggest that students' modeling processes are non-sequential in that the participant students reformulated their initial problem from the real-world problem situation and revised the model when they could not get a satisfactory solution or the acquired solution did not make sense. Moreover, the students' model refinement processes were affected by the following four elements: the types of real-word problem situations, students' metacognitive thinking, communications between teachers and peers, and the role of teachers.

• Journal of the Korean School Mathematics Society
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• v.12 no.4
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• pp.433-452
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• 2009

This study investigated the teaching strategies of two exemplary American teachers regarding word problems and their impact on students' ability to both understanding and solving word problems. The teachers commonly explained the background details of the background of the word problems. The explanation motivated the students' mathematical problem solving, helped students understand the word problems clearly, and helped students use various solving strategies. Emphasizing communication, the teachers also provided comfortable atmosphere for students to discuss mathematical ideas with another. The teachers' continuous questions became the energy for students to plan various problem solving strategies and reflect the solutions. Also, this research suggested a complementary model for Polya's problem solving strategies.

• Communications of Mathematical Education
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• v.27 no.4
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• pp.581-609
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• 2013

Students' learning processes and mathematical levels should be correctly diagnosed in many different methods of assessment to help students learn mathematics. The study developed the model for the process-based assessment while using manipulatives in the middle school in order to improve problem solving, reasoning and communication which are emphasized in 2009 reformed curriculum as the areas of mathematical process. Identifying the principles of assessment, we created the assessment model for each area and carried out a preliminary study. Based on this, we revised the representative items and the observation checklist and then conducted a main study. Through the results of assessment, we found that students' thinking processes were well presented in scoring rubric for their responses on each item. It meant that the purpose of the assessment as a criterion-referenced test was achieved.

• Communications of Mathematical Education
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• v.10
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• pp.461-485
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• 2000

21세기 정보화 시대에는 알고 있는 지식의 대부분이 짧은 생성 주기를 가지게 되어, 다양한 변화의 시대가 될 것으로 예상하며 우리는 이것을 체험하고 있다. 열린수업에 대한 연구가 끝나기도 전에 수준별수업, 이번에는 멀티미디어 수업, 올해는 수행평가와 체험수업 등으로 다양한 변화를 권장받고 있다. 그리고 변화는 더욱 가속될 것이며, 또 다른 새로운 이름의 학습모형이 계속해서 나올 것이지만 그래도 일관된 방향성을 찾는다면, 가르친다는 것이 '지식의 전달'에 근거한 권위적인 모델로부터 '배움의 자극'을 제공하는 학생중심의 수업으로, 개별적인 학습활동과 더불어 소집단 공동학습활동을 중시하여, 발표${\cdot}$토의 활동과 관찰, 조사 등의 자기주도적인 학습능력과 협력 학습능력을 배양하는 쪽으로 바뀌어 가는 것이다. 다음의 예는 구서여자중학교 중심 MathPower 교과연구회에서 수행하고 있는 수학적 힘을 기르는 몇 가지 방법으로, 수학적 개념을 가르치는데 가장 적절한 예는 아닐 수도 있지만, ${\cdot}$ 학습수준을 고려한 교양으로서의 수학. ${\cdot}$ 협동적으로 사고하고 문제를 해결하는 의사소통 수단으로서의 수학. ${\cdot}$ 창의성과 인재에 중점을 둔 수학. 교육으로, 다양한 학습자료의 제작 및 활용으로 교실이 다른 사람과 협동적으로 사고하며, 수학적인 아이디어를 나누는 장소가 되어, 가슴이 따뜻하며, 재기발랄한 아이들이 IQ와 EQ, 그리고 창의력을 두루 맛볼 수 있었으면 하는 바램으로 정리한 것입니다.