A study on analyzing the improvement of the students` estimation capabilities of length measurement in measurement instruction with various uses of estimation strategy
이수진 Lee Soojin , 김민경 Min Kyeong Kim
20(1) 118, 2017
이수진 Lee Soojin , 김민경 Min Kyeong Kim
DOI: JANT Vol.20(No.1) 118, 2017
The purpose of this study is the reorganization of the curriculum on the measurement, a part of the second grade math curriculum, for the improvement of the estimation capability in the elementary school students. Research questions were as follows: (1) how are the estimation capabilities of the students who have taken lessons on the diversified estimation strategies? and (2) how are the mathematical writing capabilities of the students who have taken lessons on the diversified estimation strategies? The study using reconstructed lessons was conducted on 18 second grade students in an elementary school located in Seoul. Results show that the students` estimation capabilities and have improved. They started to use `about` when writing estimation results, different from writing the accurate measurements. Measurement errors were gradually reduced, ending up with a student who could accurately estimate exactly 1m. In addition, their estimation capabilities in using appropriate estimation strategy and writing skills describing the estimation strategy have improved.

Research Trends in Elementary Mathematics Education: Focused on the Papers Published in Domestic Journals During the Resent Seven Years
김유경 Kim Yukyung , 방정숙 Pang Jeongsuk
20(1) 1936, 2017
김유경 Kim Yukyung , 방정숙 Pang Jeongsuk
DOI: JANT Vol.20(No.1) 1936, 2017
The purpose of this study was to analyze the research trends of elementary mathematics education in terms of topics, methods, subjects, mathematics content strands, and mathematical competencies. For this purpose, a total of 596 papers published in eight domestic journals during the recent seven years were analyzed. The results of this study showed that the popular research topics included learners` perspectives and abilities, analysis of curriculum and textbooks, and instruction and teaching methods, whereas studies on assessment and technology or manipulative materials did not get much attention. The results also showed that qualitative research methodology was used a lot with focus on students. The mathematics content strand which was most frequently studied was number and operations, and problem solving was most popular among the mathematical competencies. On the basis of these results, this paper includes several implications for the future research direction in elementary mathematics education.

An Analysis of an Elementary Math Class Program for Gifted Students and Its Current Status
김상미 Kim Sang Mi , 최창우 Choi Chang Woo
20(1) 3752, 2017
김상미 Kim Sang Mi , 최창우 Choi Chang Woo
DOI: JANT Vol.20(No.1) 3752, 2017
The purpose of this thesis is to analyze the current status of a program for an elementary math class for gifted students in Daegu and to propose a remedy. The main results of this thesis are as follows. First, goals of the gifted class and the basic operation direction were satisfactory, however plans for parent training programs and self evaluation of the classes were not presented. Therefore, it needs when and how to do for specific plan of gifted class evaluation and parent training programs. Second, The annual instruction plan has been restricted to the subject matter education and field trips and has not included specific teaching methods in accordance with the contents of learning program. The management of gifted classes, therefore, requires not only the subject matter education and field trips but also output presentations, leadership programs, voluntary activities, events and camps which promote the integral development of gifted students. Third, there is no duplication of content to another grade, and various activities did not cover the whole scope of math topics(eg. number and operation, geometry, measurement, pattern) equally. In accordance with elementary mathematics characteristics, teachers should equally distribute time in whole range of mathematics while they teach students in the class because it is critical to discover gifted students throughout the whole curriculum of elementary mathematics. Fourth, as there are insufficient support and operational lack of material development, several types of programs are not utilized and balanced. It is necessary for teachers to try to find the type of teaching methods in accordance with the circumstances and content, so that students can experience several types of programs. If through this study, we can improve the development, management and quality of gifted math programs, it would further the development of gifted education.

How Do Elementary School Students Understand Tables? :1) From Functional Thinking Perspective
김정원 Kim Jeongwon
20(1) 5368, 2017
김정원 Kim Jeongwon
DOI: JANT Vol.20(No.1) 5368, 2017
Although the table, as one of the representations for helping mathematics understanding, steadily has been shown in the mathematics textbooks, there have been little studies that focus on the table and analyze how the table may be used in understanding students` functional thinking. This study investigated the elementary school 5th graders` abilities to design function tables. The results showed that about 75% of the students were able to create tables for themselves, which shaped horizontal and included information only from the problem contexts. And the students had more difficulties in solving geometric growing pattern problems than story problems. Building on these results, this paper is expected to provide implications of instructional directions of how to use the table as `function table`.

A Study on Introduction of Division Algorithm in Mathematics Textbooks : Focussing on Elementary Math Textbooks and Manuals Applied 2009 Revised Curriculum
강호진 Kang Hojin , 김주창 Kim Juchang , 이광호 Lee Kwangho , 이재학 Lee Jaehak
20(1) 6984, 2017
강호진 Kang Hojin , 김주창 Kim Juchang , 이광호 Lee Kwangho , 이재학 Lee Jaehak
DOI: JANT Vol.20(No.1) 6984, 2017
The purpose of this study is to review how to introduce a division algorithm in mathematics textbooks which were applied 2009 revised curriculum. As a result, the textbooks do not introduce the algorithm in the context of division by equal part. The standardized division algorithm was introduced apart from the stepwise division algorithms and there is no explanation in between them. And there is a lack connectivity between activities and algorithms. This study is expected to help new curriculum and textbook to introduce division algorithm in proper way.

The Sociodynamical Function of Metaaffect in Mathematical ProblemSolving Procedure
도주원 Do Joowon , 백석윤 Paik Suckyoon
20(1) 8599, 2017
도주원 Do Joowon , 백석윤 Paik Suckyoon
DOI: JANT Vol.20(No.1) 8599, 2017
In order to improve mathematical problemsolving ability, there has been a need for research on practical application of metaaffect which is found to play an important role in problemsolving procedure. In this study, we analyzed the characteristics of the sociodynamical aspects of the metaaffective factor of the successful problemsolving procedure of small groups in the context of collaboration, which is known that it overcomes difficulties in research methods for metaaffect and activates positive metaaffect, and works effectively in actual problemsolving activities. For this purpose, metafunctional type of metaaffect and transact elements of collaboration were identified as the criterion for analysis. This study grasps the characteristics about sociodynamical function of metaaffect that results in successful problem solving by observing and analyzing the case of the transact structure associated with the metafunctional type of metaaffect appearing in actual episode unit of the collaborative mathematical problemsolving activity of elementary school students. The results of this study suggest that it provides practical implications for the implementation of teaching and learning methods of successful mathematical problem solving in the aspect of affectivesociodynamics.

An Analysis on the Motivations in the Elementary Mathematics Lessons
박만구 Park Mangoo
20(1) 101115, 2017
박만구 Park Mangoo
DOI: JANT Vol.20(No.1) 101115, 2017
This study was to analyze motivations in the mathematics lessons from the perspectives of preservice elementary school teachers. The participants were three groups of 62 preservice elementary teachers who were sophomore or junior students in Seoul city in Korea. Two groups of the students were enrolled at teaching and learning mathematics courses, whereas one group of students were at mathematics problem solving course. They were randomly assigned to elementary schools for their student teaching. They were required to observe mathematics lessons focusing on motivations during their participating at the twoweek student teaching period. The preservice teachers were asked to observe and submit the reports of the observation in the mathematics lesson. The researcher suggested a guideline of observation and analyzed the reports according to the categories those were suggested in the guideline. The results of the analysis on the reports are summarized as follows. First, the preservice elementary school teachers considered the purpose of motivations as attracting students` interest. Second, the major ratio of motivations were attracting students` attention in the mathematics lessons. Third, the duration average time was 5 minutes 50 seconds and only limited materials for the motivations. At last, most mathematics lessons need to stimulate students` curiosity that fits to the objectives of the lessons. The researcher suggests that we need to develop various motivations in mathematics lessons with which teachers should subtlely connected to the objectives of the lessons.

Implications of Euclid Elements for the Understanding of Elementary Mathematics Textbooks
홍갑주 Hong Gap Ju , 강정민 Kang Jeong Min
20(1) 117130, 2017
홍갑주 Hong Gap Ju , 강정민 Kang Jeong Min
DOI: JANT Vol.20(No.1) 117130, 2017
Euclid`s elements have been recognized as a significant textbook in mathematics and mathematics education because of importance of its contents and methodology. This study discussed how the elements is connected with understanding of math textbooks in elementary school, trying to reveal the value for teacher training. First, when details in elementary textbooks were considered in aspect of elements, the importance of elements was illustrated with the purpose of understanding contents of elementary school by examining educational implications. In addition, the study discussed the value of the elements as the place for teachers and wouldbe teachers to experience math system.
