• 한국수학교육학회지시리즈D:수학교육연구
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• 제18권1호
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• pp.1-29
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• 2014

When taught the precise definition of ${\pi}$, students may be simply asked to memorize its approximate value without developing a rigorous understanding of the underlying reason of why it is a constant. Measuring the circumferences and diameters of various circles and calculating their ratios might just represent an attempt to verify that ${\pi}$ has an approximate value of 3.14, and will not necessarily result in an adequate understanding about the constant nor formally proves that it is a constant. In this study, we aim to investigate prospective teachers' conceptual understanding of ${\pi}$, and as a constant and whether they can provide a proof of its constant property. The findings show that prospective teachers lack a holistic understanding of the constant nature of ${\pi}$, and reveal how they teach students about this property in an inappropriate approach through a proving activity. We conclude our findings with a suggestion on how to improve the situation.

• 한국생활과학회지
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• 제5권2호
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• pp.161-171
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• 1996

In order to provide the basic data on an education program for successful breast-feeding, the nutrition knowledge of and attitudes toward breast-feeding and the factors associated with infant feeding decision among male and female college students were investigated. The majority of students had correct knowledge of the maternal-infant bonding through breast-feeding and knew more about baby-centered benefits than about mother-centered benefits of breast-feeding. Students' attitudes toward breast-feeding were not so positive as expected, and male students had more positive attitudes toward breast-feeding than female students had. 54.8% of students answered to practice breast-feeding longer than 3 months. Nutrition knowledge scores and attitude scores were significantly higher in the breast-feeding decision group than in the formula-feeding decision group. The students residing in a rural community decided breast-feeding significantly more than the students residing in an urban community. It was concluded that nutrition knowledge about the breast-feeding played a significant role in deciding infant feeding method. In order to increase breast-feeding decision rates among college students, the education program may need to focus on understanding of correct nutrition knowledge about the benefits of breast-feeding. Also it would be important to have male students participated in education program.

• East Asian mathematical journal
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• 제27권2호
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• pp.181-202
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• 2011

The study was planned to analyze the figure concepts teachers have according to the years of experiences based on the two aspects, the subject matter knowledge and the pedagogical content knowledge. Further, it aims to have the results utilized in teacher education and training, and ultimately to help elementary school students to establish the accurate figure concepts. We administered the test to the random sample of 77 elementary school teachers of the grade 3 to grade 6, from nine schools of the Daegu, Ulsan and Gyeongsangbuk-do districts, and we analyzed the results. Correlational analysis between the years of experience and the knowledge showed that the content understanding and knowledge decreases as the years of experience increases, while the experiential knowledge related to the understanding of the students and the pedagogical methods increases as the years of experience increases.

• 한국환경교육학회지:환경교육
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• 제20권3호
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• pp.113-124
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• 2007

The purpose of this study is to investigate the direction of how to educate water shortage problem to middle school students. In the reality that many people of the world have been painful of the water shortage problem, Korea is classified as 'water shortage country'. Here, we investigated the awareness of middle school students about the contents related to the water shortage problem by surveying with the questionnaires developed in this study. And we analyzed how water shortage problem appeared in the environmental textbook of middle school. Based on these, we examined the direction of environmental education in middle school on the theme of the water shortage problem. The results of the survey showed that students revealed difference of knowledge and experience, and also revealed difference of knowledge and feeling related to the water shortage problem. The students had the knowledge about water shortage problem but they did not have experience in their real lives. Also, the results of the survey showed that students had attitude of waste in water use, even though they had awareness and knowledge about the importance of water resources. And the students did not have enough knowledge related to the water shortage problem. From the analysis of the textbooks, We found that the contents were not composed to enhance deep understanding of the students about the water shortage problem. Based on the analysis of the results, the directions of middle school environmental education in Korea about water shortage problem were extracted in this research.

• The Journal of Asian Finance, Economics and Business
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• 제9권4호
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• pp.333-343
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• 2022

The UN's 17 Sustainable Development Goals (2018) were created to address environmental pollution and climate change (SDGs). The goal of this study is to find out how well-informed Vietnamese students are about the SDGs. Knowledge, attitudes, and practice (KAP) questionnaires were used to survey 1,010 students across Vietnam's universities, and the data was analyzed using SPSS software version 20. The findings suggest that both knowledge and attitude have a positive impact on the practice level. However, when comparing the correlation between the variables and the level of practice, advantage belongs to the relationship between the attitude and the level of practice (r = 0.982^**, n = 1010, p = 0.00), the correlation between knowledge and practice level is weaker (r = 0.616^**, n = 1010, p = 0.00). Statistical data also show that many Vietnamese students do not have access to information about the SDGs. The majority of the target population who have been contacted and have a basic understanding of the SDGs have done so through their academic degree. From there, it is clear that education is the most effective strategy for Vietnamese students to modify their environmental understanding and actions.

• 대한수학교육학회지:학교수학
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• 제17권4호
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• pp.613-632
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• 2015

본 연구의 목적은 비와 비율에 관한 학생들의 오류와 어려움에 대한 교사들의 반응(TRED)을 조사하여, 이를 해결하기 위해 필요한 교사지식인 특수내용지식(SCK)과 내용교수지식(PCK)을 밝히는 데 있다. 이를 위해 선행연구를 바탕으로 비와 비율의 개념과 오개념, 오류와 어려움을 살펴본 후 학생용 질문지를 개발 적용하였으며, 그 결과를 반영한 문항에 대하여 교사들이 어떻게 이해하고 대처하는가를 조사하였다. 3명의 현직교사의 질문지 반응과 인터뷰 자료를 분석한 결과, 두 양의 곱셈적 비교를 넘어서는 좀 더 깊이 있는 비와 비율 개념에 대한 SCK와 교과서의 개념 정의와 기술 방식에 대한 전문적인 SCK를 필요로 하였다. 또한 비와 비율의 수학적 표현과 개념을 구분하여 학생들의 이해 정도를 판단하는 KCS와 학생들의 본질적인 이해를 돕기 위해 다양한 맥락을 활용하여 비를 도입할 수 있는 KCT, 학생들의 직관적이고 시각적인 이해를 돕기 위한 시각적 모델을 도출할 수 있는 KCT가 필요함을 주장하였다.

• 한국수학교육학회지시리즈A:수학교육
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• 제43권1호
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• pp.70-85
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• 2004

Comparing to the other subject, hierarchy among mathematical contents is strong from the perspective of knowledge order as grades go up. That is, the knowledge that students already have learned, are learning and will learn are closed related from grade to grade. We expect students to be proactive and creative in studying mathematics, which is the goal of 21th century, analyzing their. knowledge structure based on the hierarchy of knowledge through assessment. Especially, using computer system we provide students with substantial feedback for the assessment as well as objective validity is increased along with speedy and exact process in a bid to help students' mathematical understanding grow. This paper seeks to analyze the assessment data by applying knowledge spaces to computer system and develops efficient methods based on the analyzed results, to diagram each student's knowledge structure.

• 대한수학교육학회지:학교수학
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• 제1권2호
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• pp.637-660
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• 1999

Although ‘to understand mathematics’ is an important educational purpose, most student do not have a relational understanding of the basic concept of mathematics but have a instrumental understanding. This paper will investigate the possibility of using computers for enhancing relational understanding. In the ‘Qualitative case study’, three students who are in the first grade at E-High school took part in 7 activities during four weeks, and were later interviewed and engaged in informal discussion and were observed. This is the result of this study. 1. The three students were passive participants in mathematics problem solving situation at school. Therefore, student B just applied formulas which she had memorized, and student C would forgot the formulas occasionally. These common students needed to participate actively in doing mathematics. 2. The activities utilized two software healing with connection between graphs and function, giving the students the opportunity to plan, practice, and test by themselves. As a result, they understood the mathematical formulas and rules more deeply through their own trial and error, and then they gained thinking abilities necessary for doing mathematics. In addition, the activities boosted their confidence. 3. The understanding type of students was slightly different. Student A who received a high score, understood the most relationally, but student B who received a very high score, understood instrumentally and so couldn't app1y her knowledge to solving problems related to function concept. Student C who received a middle score lacked knowledge of mathematics but thought more creatively. The result is that students need an opportunity to think rotationally regardless of score. Therefore, this study concludes that using computer software will provide a positive effect for relational understanding in loaming function concept.

• 한국과학교육학회지
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• 제27권8호
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• pp.677-692
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• 2007

In this study, university students were provided with repeated opportunities to represent their ideas graphically, and to examined via their drawings the extent to which they could visualize macroscopic phenomena microscopically. These drawings provided insight into the students' basic understanding of solution chemistry, revealing three conceptual models: the Undifferentiated Symbolic Model, the Particulate Model, and the Symbolic Ionic Model. Generally speaking, students who had poor conceptual understanding tended to exhibit the Undifferentiated Symbolic Model, whereas students with deeper understanding tended to employ the Symbolic Ionic Model. Students' conceptual comprehension was predictable from their graphical representations, which better elucidated what they actually comprehended about the phenomena, as opposed to their ambiguous verbal descriptions alone. The results of this study demonstrated a lack of development in university students' conceptions of solutions. Their weakness in understanding at the molecular-level became more obvious when they were asked to represent their ideas in drawings. Few students exhibited expert knowledge, and several common misconceptions were found, which indicated typical difficulties students have perceiving common phenomena at the molecular level. The findings of this study illustrate how eliciting graphical representations can be used to assess students' conceptual understandings.

• Journal of Oral Medicine and Pain
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• 제47권1호
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• pp.38-51
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• 2022

Purpose: The purpose of this study was to analyze the extent of awareness and understanding of college students on temporomandibular disorder (TMD) and to search for avenues for raising public awareness and improving knowledge about TMD. Methods: One thousand and one hundred and twenty one college students in Gyeonggi-do completed a questionnaire related to awareness, experience and knowledge of TMD and collected data were analyzed by Pearson's chi-squared test. Results: Women were more significantly aware of the terms, 'TMD' (p<0.001) and 'jaw joint disease' (p<0.001) than men. Third graders were more significantly aware of the terms, 'TMD' (p<0.001) and 'jaw joint disease' (p<0.001) than any other graders. Third graders the most frequently chose to visit department of dentistry for the treatment of TMD among three graders (p<0.001). Women more frequently chose to visit department of dentistry for the treatment of TMD than men (p<0.001). Health field subjects were more significantly aware of the terms, 'TMD' (p<0.001) and 'jaw joint disease' (p<0.001) than non health field subjects. Having more frequently visited department of dentistry for the treatment of TMD than non health field subjects (p<0.001), health field subjects more frequently chose to visit department of dentistry for the treatment of TMD in the future (p<0.001). Conclusions: The level of awareness and knowledge of TMD was higher in women college students, health field subjects and third graders than men college students, non health field subjects and the rest of two graders, respectively. The higher the level of experience and education of the subject, the more aware the subject was of TMD. Therefore publicity activities and education through various routes are required to raise public awareness and knowledge of TMD. In addition, it is necessary to inform general public of the dentistry specialized for the accurate diagnosis and standardized treatment of TMD.