• Journal of Science Education
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• v.33 no.2
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• pp.165-172
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• 2009

Korean 7th national curriculum gave the right to elect the advanced subject such as physics II, chemistry II. Students could elect the subject by their aptitude and interest. But, actually, the choice was constrained by school circumstances such as the number of teacher and the number of class. high school students. We investigated the demand about school science and perception about scientifically specialized high school in which the students could have all advanced science subjects by the survey of 336 middle school students including 148 students in the science education center for the gifted, 220 high school students, and 70 science teachers in capital region. As results of this study, most of the high school opened chemistry and biology advanced subjects, but only 37.1% of them opend physics advanced subject. This constrained students' right of elect the subject by their interest. While most of middle school and high school students normally demanded the more experiment in the class and the easier science content, the students in the science education center for the gifted demanded more science class time. The students who wanted to have science career had very positive recognition of scientifically specialized high school and science teachers agreed to running the scientifically specialized high school.

• Journal of the Korean Chemical Society
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• v.51 no.4
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• pp.375-386
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• 2007

The purpose of this study is to investigate the aspects of verbal interactions of teacher?small group students by categorizing those interactions which affect students' thinking thus to improve teacher's interaction. First, verbal interactions of teacher-small group students were divided into two categories ?Behaviors related to problem-solving, and Others. Behaviors related to problem-solving were also classified into two elements?Receiving opinion based on the students' thinking process, and Giving help based on the teacher's thinking process. Receiving opinion consists of agreement, question, correction, objection while giving help consists of information, hint, question, summary, and ask & answer. Most of teacher-small group students' interactions were in the form of teacher's questions and students' answers, and teacher's questions tended to require simple answers rather than answers from deep thought. In addition, there was a tendency that the teacher focused more on her own thinking process than students' and that she interacted with only a couple of students who gave correct answers. As a result, even after teacher's scaffolding, many students were often unable to understand the particular contents. However, through the interactions, the teacher made students to have confidence by restating their opinions and agreeing or praising them. She also created an atmosphere where students can give their opinions freely. From the observation of interactions, we can find that students' thinking process is affected by the characteristics of teacher's interactions such as expression of agreement and encouragement, hint giving rise to thought, interactions based on the students' thinking process, permission of students' activities and questions, allowing time for students' thought, and correction of wrong opinions. At this point, educational implications of teacher-small group students' interactions were drawn.

• Journal of The Korean Association For Science Education
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• v.27 no.6
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• pp.529-545
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• 2007

Questioning forms an integral part of most strategies for effective teaching when the class consists of difficult content. Science including chemistry is usually content-rich, but difficult to understand without supporting lab experiments, subsidiary visual materials and model kits. Engaging the attention and interest of students in such a subject, therefore, is the key to the success of a daily lesson in the classroom. However, generating meaningful questions requires a certain level of information and metacognitive skills on the part of the teacher. The purpose of this study was to find out the framework of effective teachers' questioning with a large group in chemistry class: how teachers used questioning to engage their students in such a big class, to identify a variety of forms of feedback provided by students and to develop a model of question-inducing strategies. We investigated the teachers' recognition of their questioning and the students' recognition of teachers' questioning by surveying over 82 teachers and 434 students in Korea. The survey findings show that the questionnaire can be categorized into four elements: the theme of the teachers' questions (T), students' inquiries (I), methods of teachers' questioning (M) and encouragement of students (E). These elements can be analyzed and sub-categorized to find out which elements are effective in good questioning, even though the elements are interwoven tetrahedrally.

• Journal of the Korean Chemical Society
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• v.59 no.3
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• pp.246-252
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• 2015

In this study, we examined elementary school teachers' needs for environmental education (EE) in order to effectively implement EE in the elementary school. The participants were 113 elementary school teachers in Chungcheongnam-Do. Twenty items were adapted from the Environmental Education Needs test, and the teachers were asked to respond to each item on a 5-point Likert scale. For the items of the subcategory of EE training, teachers' preferences between the on-site and the online training were also asked. Although the teachers showed relatively strong needs for most items of both the subcategories of EE service and EE training, they exhibited stronger needs for the items related to the services and/or the content of training readily applicable to EE classes. Teachers preferred the online training to the on-site training in most items whereas their preferences to the on-site training tended to be relatively high in the items such as the use of local nonformal EE site, the development and the use of outdoor EE site, and the EE teaching strategies. Educational implications for the effective EE are discussed.

• Journal of the Korean Chemical Society
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• v.46 no.6
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• pp.561-568
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• 2002

This study examined secondary school science teachers' thinking on physical and chemical change. For this research, we analysed the answers of 80 secondary school science teachers. According to the result of the analysis,teachers had various opinions when they classified phenomena of dissolving ionic compound or diluting acid into phys-ical change and chemical change. Many teachers tended to classify similar phenomena into different change when those were represented with different focus. It means that teachers' opinions were not consistent.

• Journal of the Korean Chemical Society
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• v.64 no.5
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• pp.267-276
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• 2020

This study analyzed the level of chemistry teachers' cognition related to two types of acid-base models taught in secondary schools. For the purpose, a questionnaire was developed to identify teachers' cognitions based on previous studies that analyzed the 'Ignorance' of each model. The questionnaire consisted of two items, one related to acid and base reactions and one related to acid and base dissociation, which suggested inconsistencies between the two models. The subjects were 15 chemistry teachers, and as a result, teachers' cognitions were analyzed at four levels. The four levels are: if they don't know the two models, if they only understand one model, if they understand the two models, and perceived the 'Ignorance' of one model, and if they understand the two models and perceived the 'Ignorance' of the two models. The largest proportion of teachers understood the two models and perceived the 'Ignorance' of one model. However, the proportion of understanding the two models and perceiving the 'Ignorance' of the two models was very small. Through this, we argued that efforts to increase the level of chemistry teachers' cognition of the model and 'Ignorance' were necessary.

• Journal of the Korean Chemical Society
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• v.51 no.1
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• pp.73-81
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• 2007

The purpose of this study was to find out chemistry teachers' perceptions on the aims and characteristics of the chemistry I course from the 7th national curriculum by means of investigating how frequently particular learning contents were selected and what the teachers' teaching styles were in order to find out how effectively teachers were working with the 7th national curriculum in teaching. For this study, data was collected by means of questionnaires, which was answered by 44 chemistry teachers in 40 different high schools. Results from this study are as follows: As for the perception on the aim and characteristics of chemistry I course, many chemistry teachers have already perceived that the aim of the course was to promote democratic citizens with the knowledge of chemistry. And the most appropriate way of teaching chemistry I course was inquiry-centered teaching such as experiment-practice and inquiry-discussion. However, these perceptions were not reflected when they actually taught students in the classroom. Instead, most of the class was concepts learning and there were a lot of differences in selecting learning contents among chemistry teachers. Furthermore, although chemistry I course was considered a good subject to make students have interest and curiosity in chemistry, it was not appropriate to make students understand the concepts of chemistry. Therefore, learning contents in chemistry I course need to improve. In conclusion, as the goal of 7th national curriculum of chemistry I course was to emphasize inquiry teaching, inquiry based teaching should be practiced in the class. Moreover, sufficient teacher training should be accompanied and alternative additional teaching contents should be developed. Finally teachers' experiences should be reflected in the national curriculum when it is revised.

• Journal of the Korean Chemical Society
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• v.63 no.2
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• pp.123-133
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• 2019

The purpose of this study was to investigate the effect of responsive teaching method for pre-service teachers in Chemistry Education Department of H University. We designed three steps for the discussions: foregrounding the substance of learners' ideas, recognizing the disciplinary connections within learners' ideas, taking up and pursing the substance of thinking. In the step of foregrounding the substance of learners' ideas, we analyzed the questionnaires conducted by the 20 pre-service teachers to understand the nature of their ideas about evaporation and boiling. Among them, five pre-service teachers were selected to recognize the disciplinary connections within learners' ideas. Through these steps, the pre-service teachers have grasped the nature of their thinking about evaporation and boiling, and have experienced the process of modifying or expanding the frames of thought by the disciplinary connections within learners' ideas. In addition, the pre-service teachers directly perceived the effect of the responsive teaching method by experiencing dynamic changes of their conceptions.

• Journal of the Korean Chemical Society
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• v.53 no.1
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• pp.51-61
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• 2009

The purposes of this study are to analyze the learning contents on the measurement of reaction rate which is introduced in the high school ‘science’ and ‘chemistry II’ textbooks, and to revise the experiment appropriate to the learning contents. We examined 11 kinds of ‘science’ textbooks, 8 kinds of ‘chemistry II’ textbooks and 11 kinds of teacher’s manuals used in Korea and additionally surveyed teachers’ opinions on this subject. Most of textbook and teacher’s manuals described that ‘the reaction rate generally decreases through the time’, teachers’ conception also agreed with it. But most of experimental activities in the textbooks were inadequate to explain the concept that the reaction rate generally decreases with time. We analyzed the reasons and revised the experimental condition to solve this disagreement between the description in textbooks and an experimental result. Then we compared improved experimental result and theoretical prediction data. The improved experiment in this study is expected to help to describe the conception of chemical reaction rate in the textbook more clearly.

• Journal of the Korean Chemical Society
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• v.56 no.5
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• pp.617-627
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• 2012

We investigated pre-service science teachers' understanding of and problem-solving ability with regard to chemistry concepts in the high school curriculum. For this purpose, we used related certain items and analyzed the results. We found that in the case of all items, some pre-service science teachers, who do not have clear concepts, selected incorrect answers. The in-depth interviews we conducted with the participants revealed some of the causes for the results obtained. First, although pre-service science teachers have better concepts as compared to high school students, they have the same misconceptions as students with regard to some concepts. Second, although they are familiar with the general definitions or meanings of scientific concepts, they do not understand the specific content that is emphasized in the curriculum. Moreover, they tend to solve problems by the information visually conceived. Third, although they know the necessity of general concepts related to problem solving, they sometimes fail to apply inquiry skills and tend to suggest concepts from the higher education curriculum that are not helpful for solving problems.