• Education of Primary School Mathematics
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• v.26 no.3
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• pp.125-140
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• 2023

In elementary school mathematics, the addition and subtraction of fractions are difficult for students to understand but very important concepts. This study aims to examine the teaching methods and visual aids utilized in the context of common denominator fraction addition and subtraction. The analysis focuses on evaluating the lesson flow and the utilization of visual representations in one national textbook and ten certified textbooks aligned with the current 2015 revised curriculum. The results show that each textbook is composed of chapter sequences and topics that reflect the curriculum faithfully, with each textbook considering its own order and content. Additionally, each textbook uses a different variety and number of visual representations, presumably intended to aid in learning the operations of fractions through the consistency or diversity of the visual representations. Identifying the characteristics of each textbook can lead to more effective instruction in fraction operations.

• The Journal of Korean Association of Computer Education
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• v.13 no.5
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• pp.1-13
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• 2010

According to the 2007 national curriculum amendment, new 'informatics' textbooks have been used since 2010 as a textbook for middle school first graders and will eventually be used in other grades. However, only a few studies that have evaluated the 'informatics' textbooks, have been performed. What is worse is the fact that none of the evaluating tools even exist. Therefore, we propose the criteria of selecting 'informatics' textbooks in middle school. Its contents can be summarized as follows: First, this paper classifies previous studies on textbook evaluation into general criteria of selecting textbooks, method of textbook analysis based on how inquisitively students can learn and previous studies which analyzed existing secondary school 'informatics' textbooks and propose the criteria of selecting 'informatics' textbooks in middle school. Second, using the proposed selection criteria for 'informatics' textbooks and other evaluation criteria, five kinds of informatics textbooks were analyzed. Furthermore, it is expected that we can use the selection criteria as a material to choose the new 'Information science' textbooks, and to suggest alternative directions of future studies in the area of evaluating 'Information science' textbooks.

• The Mathematical Education
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• v.57 no.2
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• pp.157-177
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• 2018

The students in secondary schools have been taught calculus as an important subject in mathematics. The order of chapters-the limit of a sequence followed by limit of a function, and differentiation and integration- is because the limit of a function and the limit of a sequence are required as prerequisites of differentiation and integration. Specifically, the limit of a sequence is used to define definite integral as the limit of the Riemann Sum. However, many researchers identified that students had difficulty in understanding the concept of definite integral defined as the limit of the Riemann Sum. Consequently, they suggested alternative ways to introduce definite integral. Based on these researches, the definition of definite integral in the 2015-Revised Curriculum is not a concept of the limit of the Riemann Sum, which was the definition of definite integral in the previous curriculum, but "F(b)-F(a)" for an indefinite integral F(x) of a function f(x) and real numbers a and b. This change gives rise to differences among ways of introducing definite integral and explaining the relationship between definite integral and area in each textbook. As a result of this study, we have identified that there are a variety of ways of introducing definite integral in each textbook and that ways of explaining the relationship between definite integral and area are affected by ways of introducing definite integral. We expect that this change can reduce the difficulties students face when learning the concept of definite integral.

• Journal of The Korean Association of Information Education
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• v.8 no.3
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• pp.433-446
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• 2004

We must know computer terms to use, learn, and understand efficiently. It is important for the elementary school students who learn computer for the first time to understand computer terms correctly. This study investigates a computer terms in the elementary school computer textbook which have been used currently at the elementary school, selects suitable computer terms for the elementary school student, analyzes and classifies them as a 1 2th grade, a 3 4th grade, 5 6th grade by the elementary school computer curriculum, and also classifies those as information ethics, computer basic, application software, computer communication by the category. The expectations of this study are as follows. First, the result of this offers teacher to a computer terms guidance for usability which is essential to elementary school's computer class. Second, this can be used as a reference in making a elementary computer textbook or studying and training textbook for teachers. Third, this offers teachers to an important criteria when they select a computer textbook for elementary student in elementary school.

• The Mathematical Education
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• v.60 no.3
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• pp.265-279
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• 2021

In this study, by analyzing of types and functions of questions presented in Data and Chance area of the mathematics textbooks for grades 1-6 of the 2015 revised curriculum, the characteristics of the questions presented in the textbook were identified, and implications for teaching and learning related to the questions in this textbook were obtained. Types and functions of the presented questions showed different proportions of appearance according to the grade clusters, and this seems to be related to the learning contents for each grade clusters and the characteristics of grade clusters. In addition, it can be seen that the functions of questions are related to the types of questions. Teachers should have pedagogical content knowledge about Data and Chance area as well as developmental characteristics for each grade clusters. In addition, the teacher should present an suitable question for the level of grade clusters and the nature of the content to be taught so that effective learning can be achieved based on the understanding of the characteristics and functional characteristics of each type of questions. The results of this study can contribute to statistical teaching in a progressive direction by providing a foundation for textbook writing and teaching/learning.

• Journal of Environmental Impact Assessment
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• v.14 no.1
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• pp.1-15
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• 2005

This study aims to analyze the objectives of environmental education in Environmental Impact Assessment (EIA) and the Education for Sustainable Development(ESD) factors used EIA in 'ecology and environment' textbook, and finally to analyze the situation and contents level of EIA domain in textbook to explore the possibility of the positive availability of EIA domain in high school for realization of effective ESD. To analyze the objectives of environmental education in EIA and ESD factors used EIA, researchers used the text, the activity and the teaching tip in three kinds of 'ecology and environment' textbook by the 7th curricula as the object of analysis. Framework to analyze the objectives of environmental education in EIA is the category of environmental education objectives of UNESCO presented according to 'Tbilisi Intergovernmental Conference on Environmental Education' and framework to analyze ESD factors used EIA is developed on the basis of the theory about EIA and ESD factors updated in this study. In conclusion, it proves that the EIA domain through the activity is effective for realization of ESD. According to the analysis of the study, it is proposed that the follow-up studies on the improvement of EIA domain in textbook in both quality and quantity as well as 'the teaching & learning methods and various development of teaching materials, etc: based on the emphasis on the activity are needed to progress steadily for realization of effective ESD in high school in the future.

• Journal of The Korean Association of Information Education
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• v.25 no.3
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• pp.501-510
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• 2021

This paper was described to assess the possibility of field application of the developed textbooks by developing a textbook using action learning to conduct ICT electromagnetic waves training education for elementary and middle school teachers and applying it on a pilot basis. To this end, it was organized to be used in conjunction with classes in several subjects and provided various teaching materials to facilitate teachers' convenience to use the textbook. Also, the textbook was composed of a content structure of 10 sessions. As for the proposed textbook, the overall understanding of ICT electromagnetic waves was improved through pilot application in teacher training, and problem-solving ability, cooperative learning ability, democratic citizenship, and knowledge information processing ability were improved through action learning. It can be said that it contributed to improving the understanding of ICT electromagnetic waves and teachers' competencies.

• The Journal of Korean Association of Computer Education
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• v.19 no.2
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• pp.115-124
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• 2016

This study aims to analyze the types of occupations that are presented through the illustrations in the elementary school textbooks specifically designated by the government, from a perspective of a digital world.. Types of occupations were analyzed from a perspective of digital world by analyzing the illustrations presented in Korean language, social studies and ethics textbooks of elementary school year 3~6. Occupations that would disappear in future were compared and analyzed from a point of view of a report, "The Future of Employment: How susceptible are jobs to computerisation?". As a result of the analysis, it was confirmed that the occupations presented in the textbook were not reflecting the change of society and occupations, and there was absolutely no reflection of the times at all that highlights SW. This study has a significance for proposing directivity regarding writing of new textbooks at a current situation of new textbook work being processed, based on the 2015 amended curriculum.

• Journal of the Korean School Mathematics Society
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• v.16 no.2
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• pp.319-335
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• 2013

Chinese mathematical curriculum is divided 4 areas(number and algebra, space and figure, statistics and probability, practice and synthetic application). The purpose of this paper is to analyze the contents of the practice and synthetic application in yanbian elementary textbook. For this, 12-textbook which was published in yeonbeon a publishing company is analyze by topic, mathematical process, area of content and mathematical activity. mathematical process The following results have been drawn from this study. First, contextual backgrounds of practice are restricted in classroom. The contents of synthetic application are limited in connection of mathematical areas. Mathematical problem solving is a main in mathematical process, whereas reasoning activity is a few. Mathematical experience activity is a main in mathematical process, whereas synthetic activity is a few. We can use the suggestions of this paper for development of textbook and the contents of mathematical process.

• Journal of Korean Elementary Science Education
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• v.41 no.2
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• pp.307-324
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• 2022

This study examined the content diversity of seven authorized science textbooks by comparing the characteristics of the science concept description and the contents of inquiry activities in the "weight of objects" unit. For each textbook, the flow of concept description content and the uniqueness of the concept description process were analyzed, and the number of nodes and links and words with high connections were determined using language network analysis. In addition, for the inquiry activities described in each textbook, the inquiry subject, inquiry type, science process skill, and uniqueness were investigated. Results showed that the authorized textbooks displayed no more diversity than expected in their scientific concept description method or their inquiry activity composition. The learning elements, inclusion of subconcepts, and central words were similar for each textbook. The comparison of inquiry activities showed similarities in their contents, inquiry types, and scientific process skills. Specifically, these textbooks did not introduce any research topics or experimental methods that were absent in previous textbooks. However, despite the fact that the authorized textbook system was developed based on the same curriculum, some efforts were made to make use of its strengths. Since the sequence of subconcepts to explain the core contents differed across textbooks, this explanation process was divided into several types, and although the contents of inquiry activities were the same, the materials for inquiry activities were shown differently for each textbook to improve and overcome the difficulties in the existing experiments. These findings necessitate the continuation of efforts to utilize the strengths of certified textbooks.