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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean earth science society
Journal Basic Information
Journal DOI :
The Korean Earth Science Society
Editor in Chief :
Volume & Issues
Volume 24, Issue 8 - Dec 2003
Volume 24, Issue 7 - Dec 2003
Volume 24, Issue 6 - Oct 2003
Volume 24, Issue 5 - Aug 2003
Volume 24, Issue 4 - Jun 2003
Volume 24, Issue 3 - Apr 2003
Volume 24, Issue 2 - Feb 2003
Volume 24, Issue 1 - Jan 2003
Selecting the target year
Exemplary Science Teachers' Suggestions for How to Improve Science Teacher Education
Kwak, Young-Sun ;
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 117~127
This qualitative research investigated how to improve preservice and in-service teacher education programs through in-depth interviews with 10 exemplary science teachers. Data from interviews were used to analyze how the teachers perceived current situations of teacher education and what they suggested as an improvement plan. In terms of preservice teacher education, exemplary teachers argued that teacher education programs should (1) ensure the teacher education program's identity and goals, (2) provide preservice teachers with practical knowledge by translating theory into practice, and (3) secure faculty members who majored in science education. In light of in-service education, the teachers contended that (1) teachers should acknowledge the continuing processes of their own professional development, (2) the content and method of in-service training should incorporate teachers' practical needs in the classroom, and (3) the teaching community should implement a clinical supervision to improve their classroom practices. The central role of teacher (re)education in a successful classroom reform is also discussed.
Cognition of Middle School Students about 'The Material and Change of the Earth's Crust'
Hwang, Ji-Hyeon ; Kim, Cheong-Bin ; Cho, Kyu-Seong ;
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 128~134
This study is focused on how much middle school students who study the chapter of first-grade science,'The Material and Change of the Earth's Crust', connect and understand what they learn with their environment and surroundings. This paper will discuss the connection between school education and living surroundings and how much the difference between the surroundings influences students' concepts and attitudes toward science. This study included 330students in the second year of middle schools from Jeonju, Buan and Jinan in Jeollabuk-do. This study analyzed students' concepts of mineral and rocks by having them observe samples in class. Only 16 percent of the students observe surrounding rocks with interest, but most of them are not interested. Chaesukgang and Mountain Mai are two local places in Jeollabuk-do which have a lot of specific stratum and geological structures, so it's easy for teachers to provide an outdoor experience by showing the students rocks and geological structures. Although which students have a little more observation experience than Jeonju area students, students who throughout the county seldom do outdoor observation learning. By collecting and observing the surrounding minerals and rocks, along with teaching the chapter 'The Materials and Change of the Earth's Crust', and by visiting outdoor locations while teaching about geological structures, we can improve our teaching.
Pre-Service Elementary Teacher's Conceptions of Environmental Issues
Lee, Eun-Ah ; Choi, Seong-Hee ;
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 135~140
The purpose of this study is to assess pre-service elementary teacher's conceptions of environmental issues. 141 pre-service elementary teachers from local college participated in this study. We discovered that most of participants understood the possibility of technological abuse that could lead to environmental destruction. They also well understood the crisis of the Earth's ecosystem. Nevertheless, it seemed most of participants were not ready to take action to save ti. In addition, they also showed stereo-typically biased opinions about science, technology and their relationship with environmental issues. It appeared to come from media-oriented environmental education. Since pre-service teacher's conceptions could directly effect future education, it is necessary to establish a more systematic educational system for environmental education, for both pre-service teachers and students.
Effect of Gender Grouping on Cooperative Learning in Middle School Science
Lee, Yun-Mi ; Yoo, Jung-Moon ;
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 141~149
This study investigated the effect of gender grouping on cooperative learning on the basis of student achievement and science-teaming attitude. Homogeneous and heterogeneous gender groupings were used in the treatment groups for the learning strategies of earth science. Traditional instruction was performed for the control group. Three classes at a middle school were assigned to the groups. Before the treatment instruction, a questionnaire about science-learning attitude was administered to 144 students, and their scores were utilized as covariate. Then, the same questionnaire was given with a test of science achievement designed in this study. The changes in both achievement and attitude among the three groups were analyzed statistically. Significant differences were not shown in science achievement or in the difference of gender with respect to perceptions about science. There were significant changes between the homogeneous and heterogeneous gender grouping in their attitudes toward science instruction. Here the cooperative learning group, regardless of the gender grouping, tends to exhibit more positive perceptions towards their learning environment than the control group, particularly in female students.
A Method for Developing Items to Assess Earth Science Creativity
Lee, Hang-Ro ;
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 150~159
This study suggests methods of assessing scientific creativity and developing items, which can be achieved when both earth science knowledge and general creativity are applied at the same time. According to the results of this study, the cognitive ability gaps between creativity and scientific creativity were clearly defined by the terms' operational definition. Four factors in the Subcategory Of Scientific Creativity-fluency, flexibility, elaboration, and originality-were selected, and the possibility of developing items out of these factors was discovered. The operational definitions of the four factors were given and the criteria for assessment and scoring were set. The validity, reliability, discrimination, and difficulty, which were the conditions required for the assessment instruments, were verified through three field trials of inputting the assessment instruments for scientific creativity. The assessment instruments were composed of 8 items with 2items for each factor. The average item fitness index obtained was 0.99, Cronbach , the item inter-consistency was 0.79,the inter-rater reliability of each item was 0.78, the inter-rater reliability of each factor was 0.75, the item discrimination power was 0.19, and the item difficulty was 0.00. Because the results were within the permitted limit of the conditions required for assessment instruments, the assessment instruments developed for scientific creativity in this study can be said to be very favorable.
The Effects on Earth Science Concepts about Seasonal Changes by Generative Learning Strategy
Jeong, Jin-Woo ; Yoon, Sang-Wha ; Lee, Hang-Ro ;
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 160~171
This study was designed to analyze the types of concepts about earth science related to seasonal changes, so as to develop a generative learning model focused on dissolving cognitive conflicts between the aforementioned concepts through debates and using said debates to find out how effectively the model works. There are 100 types of earth science concepts concering seasonal changes, 66 of which are unscientific in nature, including misconceptions. Through a second field trial and a research and development (R&D) process, a test on these concepts was developed, consisting of 14 items. For the experimental group, a four-phase generative learning strategy that reflects the types of earth science concepts and cognitive conflicts between such concepts was developed through pre-analysis and discussion, respectively. On the other hand, a traditional teaching and teaming strategy was used for the control group. A meaningful statistic gap found between the two groups through a covariance analysis, the significance level of which was 0.05. This result may be interpreted to mean that the generative teaming strategy is a possible alternative for correcting misconceptions about scientific concepts of seasonal changes.
Web Contents Development of Virtual Geologic Field Survey for High School Students -Focusing on the Songaksan and Jisagae area of Jeju island-
Hong, Seok-Eui ; Lee, Chang-Zin ;
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 172~180
Geologic field survey is very important for the high school students who take the courses of earth science under the 7th earth science curriculum, however actually it is very difficult for the students to survey in the field because of long time and distance, and expenses. To overcome these difficulties, this study focused on developing the web contents and teaching-learning materials for virtual geologic field survey of the Songaksan and Jisagae area, Jeju island. The developed web contents were placed into three parts; main manu, sub manu and contents to help the learners flow-chart of the program easily. To overcome the weakness of existing textual web materials, some movable images and worksheets were provided for the learners, and the web contents were designed for the learners to experience as similar as the geologic field survey may let them do.
The Characteristics of Winter Lightning Observed in the Mid-western Part of Japan
Lee, Jong-Ho ; Kawasaki, Z. ; Ryu, Chan-Su ;
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 181~189
This study analyzes the results of thunderstorm data observed in the mid-western part of Japan during the winter of 1996-1997. There were 35 instances of thunderstorms with 4,426 instances of lightning detected during the observation period. This study estimates the frequency of lightning occurrence through classification of detected lightning into two types, and analyzes the relationship between lightning types and synoptic pattern. According to the analyzed results, cloud-to-cloud discharge and positive polarity occupied 78% and 42.3% of total discharge, respectively. It is rare for lightning to occur in the winter season, usually occuring during the night (midnight to 5 a.m.). Lightning frequently occurs when there is a prevailing synoptic wind from the norhwest. According to the analyzed results of multiplicity and multi-point lightning, the mean values of multiplicity and multi-point lightning are 1.4 and 1.2, respectively.
The Patterns of the PM Air Quality Guidance Level in Seoul during 1990~2000
Choi, Ye-Jin ; Kim, Min-Young ; Kim, Ki-Hyun ;
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 190~204
The PM (particulate matter) concentration data sets exceeding the Daily Air Quality Guidance Levels (i.e., established by the Korean Ministry of Environment) were selected from 31 air qality monitoring stations in Seoul from 1990 to 2000. (For reference, the 24hr environmental standard values of PM
and TSP are 150 and 300
, respectively.) When the data sets were compared between land use types, both PM fractions were exceeded most frequently in residential areas. However, the highest TSP concentration was measured at industrial areas (351.0
), while the highest PM
concentration was measured in residential areas (182.9
). When the temporal distribution patterns of the exceedance data sets were compared to those measured routinely (without any discrimination based on exceedance criteria), large differences were present. It was demonstrated that the occurrences of exceedance data sets increased rather significantly in recent years.
On the Improvement of Precision in Gravity Surveying and Correction, and a Dense Bouguer Anomaly in and Around the Korean Peninsula
Shin, Young-Hong ; Yang, Chul-Soo ; Ok, Soo-Suk ; Choi, Kwang-Sun ;
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 205~215
A precise and dense Bouguer anomaly is one of the most important data to improve the knowledge of our environment in the aspect of geophysics and physical geodesy. Besides the precise absolute gravity station net, we should consider two parts; one is to improve the precision in gravity measurement and correction of it, and the other is the density of measurement both in number and distribution. For the precise positioning, we have tested how we could use the GPS properly in gravity measurement, and deduced that the GPS measurement for 5 minutes would be effective when we used DGPS with two geodetic GPS receivers and the baseline was shorter than 40km. In this case we should use a precise geoid model such as PNU95. By applying this method, we are able to reduce the cost, time, and number of surveyors, furthermore we also get the benefit of improving in quality. Two kind of computer programs were developed to correct crossover errors and to calculate terrain effects more precisely. The repeated measurements on the same stations in gravity surveying are helpful not only to correct the drifts of spring but also to approach the results statistically by applying network adjustment. So we can find out the blunders of various causes easily and also able to estimate the quality of the measurements. The recent developments in computer technology, digital elevation data, and precise positioning also stimulate us to improve the Bouguer anomaly by more precise terrain correction. The gravity data of various sources, such as land gravity data (by Choi, NGI, etc.), marine gravity data (by NORI), Bouguer anomaly map of North Korea, Japanese gravity data, altimetry satellite data, and EGM96 geopotential model, were collected and processed to get a precise and dense Bouguer anomaly in and around the Korean Peninsula.
Global Environmental Changes and the Antarctic
Lee, Bang-Yong ; Chung, Ho-Sung ; Kang, Sung-Ho ; Chang, Soon-Keun ;
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 216~233
This study delineates the phenomena related with global environmental changes such as global warming, ozone depletion, and El Ni
o/Southern Oscillation (ENSO) noted in the Antarctic. Retreat of ice cliffs, glaciers, and calving of ice shelves indicate the effects of recently aggravated global warming. The ice cliff located at Marian Cove, King George Island, South Shetland Islands off the Antarctic Peninsula has been observed to be retreating faster in the last 7 years than in the previous 38 years since 1956. There are some indications of temperature and precipitation changes associated with ENSO around King Sejong Station. The regression analyses indicate significant trends such as a decrease in the total amount of ozone and an increase in ultraviolet radiation which was seen by a satellite (TOMS-EUV) in September and October which correspond to ozone-hole season over King Sejong Station. Increase of UV radiation due to the ozone depletion in the Antarctic has changed the growth rate of marine organisms. It may also result in changes to the productivity, biomass, and species composition of marine organisms which can affect the whole marine ecosystem. The recent ice-core drilling over Lake Vostok has been reviewed with emphasis on the four cycles of glacial stages over the past 420,000 years. It is time to show more interest in mainland Antarctica through investigations of the coring and vast ice sheet, terrestrial geology, and upper atmospheric sciences in order to understand the past environmental changes and to predict possible changes to the environment in the future.
Journal of the Korean earth science society, volume 24, issue 3, 2003, Pages 234~234