• Journal of Korean Elementary Science Education
• /
• v.41 no.2
• /
• pp.432-442
• /
• 2022

This study aims to apply a maker education program in an online class for a unit in elementary science entitled "Life of a Plant." Furthermore, it aims to investigate the effect of the program on the interest of students in science and creative problem-solving. The theme of the proposed maker education program is "Making a fairy tale audio book with the theme: the life cycle of a plant." The program consists of activities intended to produce creative audiobooks using concepts learned from the TMI maker education model stage. The result points to the positive effect of maker education on the interest of elementary school students in science and creative problem-solving. Therefore, applying the maker education program to online classes for elementary science is effective in improving the interest of students. In addition, further research is required to effectively apply the maker education program to online classes in science.

• Journal of Korean Elementary Science Education
• /
• v.23 no.3
• /
• pp.208-218
• /
• 2004

Many elementary school students have misconception related to dissolution and solution. Moreover, they usually fail to apply the results of the experiments in their science classes to their everyday life, and also have low science achievement. Therefore, they are not interested in science, and sometimes some of them are even afraid of it. The purposes of this study is to investigate the effects of concept mapping activity on science achievement and attitude. In addition, this study also aims at presenting the teaching and learning method of utilizing concept maps in order to have the students form correct concepts. The subjects were classified into two groups one group is composed of thirty-seven students (experimental group) who were participated in concept mapping activity, and the other is composed of thirty-eight students (comparison group) who were participated in the traditional teaching method. The major findings of this study are as follows: First, the concept mapping activity has a positive effect on improving students＇ science achievement. Second, the classes using concept maps have a good influence on forming students＇ science attitude. Third, the concept mapping activity is more effective in improving science achievement of mid and low level students. In conclusion, the loaming by concept mapping activity positively influence students＇ science achievement and attitude. Particularly for the students in mid and high levels, the effect is more remarkable.

• Journal of the Korean Society for Library and Information Science
• /
• v.49 no.3
• /
• pp.15-36
• /
• 2015

This research aims at executing a after reading activity using book trailers for the teenagers, and verifying its effects. For the investigation into its effectiveness, 6 classes on the first grade in a middle school were divided into 3 classes of an experimental group (104 students) and the other 3 classes of a comparative group (100 students), and a preliminary and a post test were conducted using the measurement tool on creativity and reading attitudes. As the result, the creativity, reading attitudes and understanding of the selected books of the experimental group were found to be better than those of the comparative group.

• Journal of Korean Elementary Science Education
• /
• v.24 no.5
• /
• pp.583-594
• /
• 2005

The purpose of this study was to investigate beginning elementary teachers' characteristics and improvement of their teaching skills in science class. The methodology of this study was a qualitative approach that included interviews, classroom observations, and teaching materials. In urban area, low beginning elementary teacher were selected. Four beginning elementary teachers were observed and recorded with VCR in their classroom at seven-times. The results showed that the beginning elementary teachers did not improve in their teaching skills in science teaching, and their characteristics of teaching skills in science were summarized as following; 1) their teaching methods were not inquiry-based science teaching, but explaining-based science teaching, 2) their main aims of the science teaching were focused on the science knowledges, 3) there were little students' science processes involved in their classes, 4) they focused on using textbook as teaching materials, 5) there were little waiting times after their questioning, and they usually used closed-questions rather than open-ended questions.

• Journal of Forest and Environmental Science
• /
• v.38 no.3
• /
• pp.174-183
• /
• 2022

The study aims to examine population indices of mature trees in Jebel Elgarrie forest, Blue Nile State, Sudan. We used remote sensing techniques to stratify the forest into vegetation classes depending on tree density. We distributed 97 circular sample plots (0.1 ha) proportionally to the area of the vegetation classes. In each sample plot we identified, counted and recorded all mature trees (DBH ≥10 cm). We calculated frequency, density, abundance, richness, evenness and diversity for each species and we drew abundance rank curve of mature trees. We used One-Way ANOVA to test for differences (α=0.05) in mean density (No./ha) of mature trees between vegetation classes. Results revealed that the forest was conveniently sub-divided into high density (C1), medium density (C2), low density (C3) and bare farm land (C4) classes. We identified fifteen tree species that belong to 10 families and 14 genera. Combretaceae and Fabaceae were the common families while Anogeissus leiocarpa was the most frequently occurring species. While species diversity varied between vegetation classes, diversity of the forest as a whole is low. While mean density of mature trees in C1, C2, C3 and C4 it was 100, 74, 10, and 0, respectively, it was 54 for the whole forest indicating low stocking, Following One-Way ANOVA, multiple comparisons revealed significant differences in mean density of mature trees between C1 & C3 and C2 & C3. The study provided empirical results on population indices of mature tree species, which would be of importance for successful management and conservation of the forest.

• Journal of Korean Elementary Science Education
• /
• v.41 no.4
• /
• pp.616-626
• /
• 2022

This study aims to investigate the effect of the application of the brain-based learning model on the self-efficacy, creative problem-solving ability, and academic achievement of elementary school students in science classes. The participants consisted of 22 students from one class (experimental group) and 22 students from another class (comparison group) of J Elementary School in B Metropolitan city. The experimental group conducted science classes that applied the brain-based learning model, and the comparison group conducted general explanatory science classes according to textbooks and the guide books of the teachers. The study found that science classes that applied the brain-based learning model exerted positive effects on the three abovementioned skills. Based on the results, the study confirmed that the application of the model is an effective learning tool that increases the self-efficacy, creative problem-solving ability, and academic achievement of for elementary school students in science classes.

• Journal of the Korean Applied Science and Technology
• /
• v.40 no.1
• /
• pp.168-178
• /
• 2023

This study aims to develop and apply problem Based learning classes through skin beauty basics and practical classes to foster experts close to the beauty care field. Students are presented with a problem to solve in practice in the field of skin care, and in order to solve the problem, intellectuals try to come up with a solution to solve the problem jointly. Conduct skin beauty learning classes that apply problem-based learning to students, and analyze the effects after taking the classes. As a result of this study, by presenting actual problems in the field, scientists were able to actually do what experts do, and it was possible to come up with various solutions to a given problem in the future, and to share parts to expect problem-solving abilities. These results suggest that problem-solving and the problem-centered learning process for problem-solving have a positive effect on improving his problem-solving ability.

• Journal of the Chungcheong Mathematical Society
• /
• v.36 no.3
• /
• pp.171-180
• /
• 2023

Investigating local dynamics requires precise control to effectively manage the subtle differences that distinguish it from global dynamics. This paper aims to study the localized perspective of the recently proposed continuum-wise expansive measures [13]. Let f : M → M be a diffeomorphism on a closed smooth manifold M and let p be a hyperbolic periodic point of f. We prove that if the homoclinic class H_f (p) of f associated to p is C¹-robustly measure continuum-wise expansive then it is hyperbolic.

• Journal of the Korean Society of Earth Science Education
• /
• v.12 no.3
• /
• pp.239-251
• /
• 2019

The study aims to run a 'Process-based Evaluation' and find out its effectiveness in science classes for prospective elementary school teachers. The Process-based Evaluation performed in this study was performed during unit classes and scored when significance was recognized in the student's learning behavior. The conclusions based on the results of the study are as follows. First, students scored an average of 3.6 points on whether the process-oriented assessment conducted during class was appropriate as an assessment. Second, on the basis of the assessment presented by the students, the main positive content is "assessing the process, not the outcome", "contributing positively to class participation" and "promoting accident activities". Third, the negative contents of the assessment grounds presented by the students include 'lack of objectivity in evaluation methods and results', 'the individual tendencies of students are involved in evaluation results' and 'poor learning effects of the textbook knowledge'.

• Journal of Ecology and Environment
• /
• v.48 no.1
• /
• pp.49-59
• /
• 2024

Background: The present study aims to identify the pattern and size of Juniperus species (Juniperus phoenicea and J. procera) in the natural forests in terms of tree dimension, size structure and density, discussing the existing both species in Sarrawat Mountains for suggesting the preservation, conservation, and sustainable development. For achieving this, the height and mean crown diameter of each individual was measured based on 2-4 diameter measurements per ind. (506 ind. for J. phoenicea and 322 ind. for J. procera). Results: The size index of both species was classified into 7 classes: the first (< 100 cm) and the second (100-200 cm) classes were chosen to represent the juvenile stage. The total mean of the J. phoenicea population increased with the increase of altitude, while the whole population decreased after altitude of 2,000 m. The total mean of the J. procera population increased with the increase of altitude till altitude of 2,000-2,100 m. Conclusions: The present study indicated that both of species grow at low altitudes, they only grow at altitude above 1,700 m above sea level. The present study indicated that the study area has the two Juniperus spp. (J. phoenicea and J. procera) associated together all over the area. The results were discussed and compared with other related studies.