• School Mathematics
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• v.8 no.4
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• pp.397-415
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• 2006

This paper is to find out the reason why students often make mistakes with 0 during computation and to get some instructional implication. For this, history of 0 is reviewed and mathematics textbook and workbook are analyzed. History of 0 tells us that the ancients had almost the same problem with 0 as we have. So we can guess children's problems with 0 have a kind of epistemological obstacles. And textbook analysis tells us that there are some instructional problems with 0 in textbooks: method and time of introducing 0, method of introducing computational algorithms, implicit teaching of the number facts with 0, ignoring the problems which can give rise to errors with 0. Finally, As a reult of analysis of Japanese and German textbooks, three instructional implications are induced:(i) emphasis of role of 0 as a place holder in decimal numeration system (ii) explicit and systematic teaching of the process and product of calculation with 0 (iii) giving practice of problems which can give rise to errors with 0 for prevention of systematical errors with 0.

• Korean Educational Research Journal
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• v.38 no.1
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• pp.17-28
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• 2017

Nearly every country in the world now has the education of its own history in school curriculum. Although there is a difference in the nationality of each country, each has a common perception that history education is important. This is because everyone agrees that the nation's national identity is the core of its identity, and that it forms the backbone of national unity. In Korea, history textbooks were temporarily organized in selective courses and until recently were chosen as subjects of choice in the CSAT. However, despite the repeated neglect of national history education, the national sentiment should not always be neglected, and the formation of the national consensus will eventually prove to be a necessity for the Korean National University's CSAT. Despite the need for the education of Korean history, education has always been mentioned in conjunction with the word "crisis" and "stalemate". This article looks at the key issues in the history of the curriculum and the contents of history textbooks.

• Journal of the Korean Chemical Society
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• v.63 no.3
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• pp.183-195
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• 2019

In this study, we investigated the characteristics of the authentic inquiry components in the inquiry tasks of Science Inquiry Experiments textbooks developed under the 2015 Revised National Curriculum. After classifying inquiry tasks by core concepts, we analyzed the cases that students autonomously planned or performed the authentic inquiry components. The results of the study revealed that investigating multiple materials component most frequently appeared in all units. However, generating research question, selecting variables, observing multiple variables and transforming observations components appeared in a few tasks of history and everyday science units as they were often guided or structured in textbooks. Controlling simple or complex variables, observing intervening variables and considering methodological flaws components rarely appeared in all units as most of textbooks did not consider or indicate explicitly. Authentic inquiry components of everyday science unit tended to be handled in small group activities. On the bases of the results, the implications for the development of the inquiry tasks of Science Inquiry Experiments textbooks are discussed.

• Journal of the Korean Chemical Society
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• v.46 no.4
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• pp.363-377
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• 2002

The purpose of this study was to improve the problems of the voltaic cell described in the science textbooks of secondary schools. For this purpose, the contents of science textbooks which are related to the voltaic cell were analyzed and the problems which were not explained clearly by theorems were tried to be explained by experiments, and lastly sug-gestions were made toward the improvements regarding the voltaic cell in the science textbooks. The findings are that there are problems on the ways of ensuring whether the voltaic cell operates properly as a chemical battery, on the explanation of why the hydrogen bubbles form at the zinc electrode, on the cell potential, on the unification of the electrode terminology used, and on the mention of the current. Solutions to the problems except the cell potential were suggested. According to the experiment, the theoretical potential was calculated by considering the potentials of redox reactions at the two electrodes of the cell and by taking into account the characteristics of the electrodes such as the work function, ionization energy, stan-dard reduction potential, and electronegativity.The cell potential of the voltaic cell is explained by several factors. In the improved version of the textbook's introduction section to the voltaic cell, it is necessary to describe the voltaic cell his-torically.For the conceptual section, it should be explained in terms of the Daniel cell.

• Journal of The Korean Association For Science Education
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• v.29 no.6
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• pp.741-750
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• 2009

Modem science education was introduced to Korea in the enlightenment period. The science textbooks which were published at that time were important to modem science education in Korea. Therefore, the translators and publishers of science textbooks were the leader of the science education in the enlightenment period. Hyun Chae and his son as a translator were one of the leaders in science education at that time. Hyun Chae was born to a Middle class (中人)family and succeeded to pass the national examination for translators (譯科). He worked as a translator and author at the Ministry of Education (學部). Also, he was the associate teacher in a foreign school and the Hansung normal school (漢城師範學校). He published 26 books. One of them, Rikwa (理科) as the science textbook covering all the areas of science, physics, chemistry, biology and earth science. That presented the knowledge, which students should know by proper method, induced students' interest and included various experiments. Hyun Chae's activity in science education as the author and translator of science textbooks was an important role on the forming science education in the enlightenment period because it was caught short of science textbooks. The author, translator, and publisher of science textbooks was of great significance to make science popular, which was the new culture. Therefore, the role and activities in science education of Hyun Chae was a part of the history of science education, he knew a foreign language and was the leader in facilitating exchange with foreign countries.

• School Mathematics
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• v.10 no.3
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• pp.375-399
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• 2008

Infinitesimal did not play an explicit role concerning definite integral in the textbook nowadays. But studies which investigate understanding of students on definite integral show that many students comprehend definite integral with infinitesimal. Formally infinitesimal is not taught at mathematics classroom, but many students identify definite integral as infinite sum of infinitesimals. This means that definite integral itself contains some structural elements that allow infinitesimal interpretation. In this study we investigate the role of infinitesimal In the historical development of partition-sum in definite integral, extract didactical issues concerning understanding of definite integral, and analyse Korean mathematics textbooks. Finally we propose some suggestions on the teaching of definite integral which contains the process of refinement intuition.

• School Mathematics
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• v.16 no.4
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• pp.727-743
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• 2014

The concepts of sample and sampling are central to the statistical thinking and foundations of the statistical literacy, so we need to be emphasized their importance in the statistics education. However, many researches which dealt with samples only analyze textbooks or students' responses. In this study, the concept of sample is addressed by a historical consideration which is one aspect of the didactical analysis. Moreover, developing concept of sample is analyzed from the preceding studies about the statistical literacy, considering the sample representativeness and the sampling variability. The results say that the historical process of developing the concept of sample can be divided into three step: understanding the sample representativeness; appearing the sample variance; recognizing the sampling variability. Above all, it is important to aware and control the sampling variability, but many related researches might not consider sample variability. Therefore, it implies that the awareness and control of sampling variability are needed to reflect to the teaching-learing of sample for developing the students' statistical literacy.

• The Journal of the Korea Contents Association
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• v.12 no.3
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• pp.411-420
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• 2012

In Korea, the traces of Mongolian history and culture are often found in Korean life and customs. Under these perceptions, this study has attempted to develop the learning contents using the Mongolian historical and cultural heritages in Korea. For this, the perspective on Mongolia in Korean History and Social Studies textbooks and the exhibition of Mongolian cultural materials in a museum have been analyzed. In addition, this study has researched a plan to develop learning contents for exhibition and education using the Mongolian historical & cultural heritage and folklore materials in Korea and people's perspective on Mongolia in the ancient western maps as a way of understanding the historical and cultural heritage between Korea and Mongolia. In addition, a way of taking advantage of the Mongolian historical and cultural heritage in Korea from the view of world history has been proposed to share historical views and promote cultural exchanges between the two countries. Furthermore, the development of learning contents of the museum using the historical and cultural heritage between Korea and Mongolia could be grounds for humanistic studies from the view of understanding multiculture and characteristics of international culture.

• Communications of Mathematical Education
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• v.36 no.1
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• pp.171-199
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• 2022

In this study, we review contents to supplement the descriptions of the history of mathematics in the 2015 mathematics textbooks and teacher guides for the elementary school level and offer our opinion on them. For this purpose, we conducted a literature review on 24 types of 2015 mathematics textbooks and teacher guides for the elementary school level. The results of this study are as follows: A total of 10 topics were found whose contents were supplemented with descriptions. They were the "Arithmetic of the Ancient Egyptians," the "A'h-mosè Papyrus in Mathematics Textbooks of the Ancient Egyptians," "The Old Akkadian Square Band in Mesopotamia," "The Relationship of the Old Babylonians in Mesopotamia with the Angle," "The Pi of the Ancient Egyptians and the Old Babylonians," "The Square Roots 2 of the Ancient Egyptians and the Old Babylonians," "The Relationship of the Islamites with the Decimal Fraction," "Two Arguments for the Roots of the Golden Ratio," "The Relationship of Archimedes with the Exhaustion Method," and "The Design of Flats." Then, their specific supplements were suggested. It is expected that this will overcome the perspective of the history of the Axial Age and acknowledge and accept the perspective evidencing the transfer of mathematical culture from Ancient Egypt and Old Babylonia to Ancient Greece and Hellenism, and then through Central Asia to Europe.

• KDI Journal of Economic Policy
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• v.10 no.1
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• pp.133-173
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• 1988

최근 과학기술(科學技術)의 영향을 받아 급변하는 국내외의 환경을 감안할 때, 과학교육(科學敎育)의 중요성은 심각히 인식되고 있으며 특히 수학교육(數學敎育)은 그 비중이 크다고 할 수 있다. 따라서 수학교과과정(數學敎科課程)의 편성(編成)은 매우 중요한 위치에 있으며 현재 문교부(文敎部)에서도 중(中) 고등학교(高等學校)의 수학교과서(數學敎科書)를 새로이 개편하는 작업을 진행하고 있다. 이러한 국가적으로 중요한 작업이 체계적(體系的)인 연구(硏究)와 제도적(制度的)인 개선(改善)을 바탕으로 이루어져야 한다는 생각 아래에서, 각급학교(各級學校)의 교과과정(敎科課程), 행정(行政) 및 제도(制度), 교과서(敎科書) 집필(執筆) 및 지도평가방법(指導評價方法)에서 나타나는 문제점(問題點)을 파악하고 개선방향(改善方向)을 모색하는 데에 본고(本稿)의 목적이 있다. 수학교육(數學敎育)의 목적을 이해하는 데에는 수학(數學)의 특성(特性)을 파악함이 가장 중요하다고 생각된다. 이 특성(特性)의 근원을 산수(算數)와 기하(幾何)의 발단(發端)에서 찾아보았으며 각급학교(各級學校)의 학과내용(學科內容)을 수학(數學)의 역사적(的) 발전단계(發展段階)와 현대수학(現代數學)의 특징(特徵)에 비추어 분석하여 보았다. 그 결과 각급학교(各級學校) 교과과정(敎科課程)이 일관성있게 배열되지 않은 면이 있고 하위(下位)의 능력평가(能力評價)에 치우친 감이 많아, 다음 단계의 교육에 지장을 초래하면서도 오히려 학생들이 수학(數學)을 어렵게 생각하게끔 만드는 원인들을 찾을 수 있었다. 이러한 문제를 개선하기 위해서는 장기적(長期的) 연구(硏究)를 할 수 있는 전문연구집단(專問硏究集團)과 활성화된 교사(敎師)의 재훈련제도(再訓練制度)의 필요성과 아울러 인시제도(人試制度), 지도방법(指導方法), 평가방법(評價方法)의 개선(改善)이 이루어져야 하겠다.