• International Journal of Advanced Culture Technology
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• 제9권4호
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• pp.237-247
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• 2021

The purpose of this study is to investigate the influences on the understanding and academic achievement in general chemistry according to chemical grades in high school and College Scholatic Ability Test. We investigated the difference between the completed subjects in high school and the elective subjects in the Test, degree of understanding of the general chemistry according to the subjects completed in high school, and the effects on the academic achievement of general chemistry by dint of the chemical grades in high school and the Test, etc. By the results of the student's perception survey, most of the students choose Chemistry I at the Test. It was found that the understanding of general chemistry was greatly affected by the chemical elective subjects of high school. Chemical grades in high school and the Test were found to have a significant influence on academic achievement of general chemistry.

• International Journal of Advanced Culture Technology
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• 제12권1호
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• pp.209-219
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• 2024

We studied the effects of science high school students on the change of epistemological beliefs in chemistry and the academic achievement of chemistry by completing 'advanced chemistry'. For seven months from July 2023 to January 2024, 80 first-year students at G Science High School in Gyeongnam were surveyed and analyzed for epistemological beliefs about chemistry before and after classes in advanced chemistry. Chemistry academic achievement was classified by 'upper' and 'lower' levels based on the end-of-semester grades of 'advanced chemistry' in the second semester of the first year and analyzed with the SPSS 28 program. After completing advanced chemistry, the epistemological belief in chemistry increased in the proportion of favorable responses. After completing advanced chemistry, the proportion of favorable responses increased in detailed factors such as 'effort', 'math link', 'outcome', 'reality link', and 'concepts', while the 'visualization' factor decreased. Although completing 'advanced chemistry' positively changed students' epistemological beliefs about chemistry, visual expression showed little contribution to understanding chemical concepts. Based on the above results, we will have to focus on the design of instructors' teaching-learning, such as learner-centered inquiry experiments, creative visual expressions, etc., for successful chemistry teaching-learning.

• 대한화학회지
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• 제55권1호
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• pp.112-123
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• 2011

화학은 단계별로 개념이 연계 발전되는 학문 체계를 가지므로 고등학교의 화학 I II의 교육 내용은 대학 일반화학과 연계성 측면에서 매우 중요하다. 현재 고등학교 학생들은 심화 선택 최상위 과목인 화학II를 배우지 않고도 이공계 대학에 진학하는 것이 가능하다. 따라서 이러한 학생들이 일반화학을 수강하면서 얼마나 어려움을 겪는지 알아보기 위해 일반화학과 고등학교 화학교재의 내용 연계성 및 학생들의 인식을 조사했다. 연구 결과, 화학I에서는 일반화학 필수 개념의 약 27%밖에 소개하고 있지 않지만, 화학II에서는 약 62%의 내용이 일반화학과 연계되었다. 전남 M대학의 학생들 중 화학II를 배우지 않은 약 70%의 학생들은 일반화학을 배울 때 상대적으로 더 어려워했고, 학업성취도도 상대적으로 낮았을 뿐 아니라, 화학에 대해 흥미도도 낮게 조사되었다.

• 한국과학교육학회지
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• 제21권5호
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• pp.944-967
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• 2001

The purpose of this study is to compare and analyze secondary school chemistry education in Korea and China in order to identify implications for the improvement of Korean chemistry education. The school systems, curricula, and teacher education related to secondary chemistry education of both countries were compared and analyzed. The 6-3-3-4 school system is used in both countries, and national school curricula are formulated by the Ministries of Education in both countries. The 1996 chemistry curricular standard for advanced middle schools in China, and 1997 chemistry curriculum for Korean high schools were compared in several aspects, followed by comparisons of chemistry teacher education in both countries. Based on the comparative analysis of chemistry education, some ideas and issues which provide implications for improving Korean high school chemistry education were identified. Chemistry teaching in the junior secondary schools, tentative implementation of curricula, required course work in chemistry, structure of curricula, oral assessments, probation of teachers and other issues are identified and discussed in this study.

• 통합자연과학논문집
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• 제7권3호
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• pp.183-187
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• 2014

Lead zirconate titanate (PZT) is significant material in electrical and optical devices for their ferroelectric, piezoelectric and dielectric properties. In this research, PZT films were fabricated by reactive RF co-sputtering method using Pb, Zr, and Ti targets. From XPS study, lead, zirconium, and titanium are successfully deposited on Si(100) substrate. Thickness of PZT films was measured with a surface profiler and the thickness was decreased as the oxygen gas ratio increased in the sputter gas.

• 대한화학회지
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• 제52권4호
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• pp.423-433
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• 2008

• International Journal of Advanced Culture Technology
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• 제11권4호
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• pp.263-272
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• 2023

We investigated and analyzed students' perceptions of their choice of science subjects in the high school credit system and the reasons for their choice. To achieve this, the selection of science subjects was investigated for the second year of S high school over the past three years. Students selected an average of 1.54 science subjects, and it was found that the rate of selection of science subjects was gradually increasing by year. Students chose high in the order of life science I, earth science I, chemistry I, physics I, etc. in the science subject group. Students who wish to enter the natural and engineering fields chose life science I, chemistry I, physics I, etc., while, students who wish to enter the humanities society chose society and culture, life science I, ethics and thought, etc. On the other hand, the reason for choosing science subjects was 'related to college admission', followed by 'aptitude and interest', 'career and real life help', etc. physics I, chemistry I, etc., were high in the subjects selected according to the 'related to college admission'. The subjects selected according to 'aptitude and interest' were high in life science I, earth science I, etc. Physics I, chemistry I, etc. are recognized as subjects necessary for college entrance, and life science I, earth science I, etc., are found to be related to their interests and aptitudes.

• 공학교육연구
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• 제13권5호
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• pp.15-19
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• 2010

Upon request from the Tokushima Prefectural Senior High School of Science and Technology, two faculty staff members and eight students of The University of Tokushima visited the high school and set up a chemistry laboratory class for 59 students. Since the participating senior high school students were freshmen, four simple, safe and visual experiments were selected: 1) Water purification, 2) Surface modification, 3) Briggs-Rauscher reaction, and 4) Polymer synthesis and characterization. All experiments received a favorable reception as a follow-up questionnaire verified. Since the high school students enjoyed the experiments it is hoped that the results will strengthen the students' interest in chemistry. It was good opportunity for the observers; they recognized the difficulty of teaching students.

• Bulletin of the Korean Chemical Society
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• 제29권4호
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• pp.879-881
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• 2008

• 과학교육연구지
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• 제35권2호
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• pp.119-126
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• 2011

이 연구의 목적은 고등학교 화학 I 교과에서 small-scale chemistry (SSC)를 활용한 실험수업이 고등학생들의 학업성취도와 과학적 태도 및 과학에 관련된 태도에 미치는 영향을 알아보는 것이다. 연구를 위하여 고등학교 2학년 2개 학급을 실험집단과 통제집단으로 나누어 실험집단에는 SSC를 활용한 실험수업을, 통제집단에는 교과서에 제시된 전통적인 실험수업을 실시하였다. 연구 결과, SSC를 활용한 실험수업은 전통적인 실험수업에 비해 학업성취도를 향상시키는 효과가 있었으며, 과학적 태도에서는 자진성과 끈기성 및 협동성을, 과학에 관련된 태도에서는 과학의 사회적 의미와 과학교과에 대한 태도 및 과학에 대한 태도를 향상시키는 효과가 있었다. 그러므로 교육 현장에서는 SSC를 활용한 실험수업을 고등학교 화학교과에 적극적으로 활용할 필요가 있다.