• Journal of The Korean Association For Science Education
• /
• v.23 no.3
• /
• pp.246-253
• /
• 2003

This study investigated the influences of role-playing analogy upon students' scientific conceptual understandings, application abilities, retentions of conception and application, and learning motivation. Four classes of 7th grade at a middle school in Seoul were assigned to control and treatment groups, and taught about 'motion of molecules' for 4 class hours. For the Treatment group, role-playing analogy instruction was used. The traditional instruction was used for the control group. Data analysis indicated that the scores of the treatment group were significantly higher than those of the control group in the tests on the conception, the retention of application, and the confidence. In the tests of the application, attention, and relevance, there were significant interactions between instruction and student' gender. Both female and male students in the treatment group scored significantly higher than those in the control group in the application test. In the case of attention and relevance tests, male students in the treatment group scored significantly higher than those in the control group. Educational implications are discussed.

• Journal of The Korean Association For Science Education
• /
• v.20 no.3
• /
• pp.468-478
• /
• 2000

In this study, the effects of a teaching strategy based on interactive formative assessment on students' science concept understandings and science-related attitudes were investigated. Students' perceptions toward this teaching strategy were also examined. Eight classes chosen from a co-ed middle school in Seoul. Four classes were assigned to the experimental group and the other four classes were assigned to the control group. After the instructions, tests regarding students' conceptions and science-related attitudes were administered. We also interviewed 24 students randomly chosen from the experimental group to investigate their perceptions toward the teaching strategy used. The results showed that the teaching strategy used was more effective for enhancing students' science concept understandings. However, there was no significant difference in science-related attitudes between the two groups. For the experimental group, no significant differences were found in the gain scores of the conceptions tests between the subgroups by previous achievement or cognitive levels. From interviews, it was found that students thought that the teaching strategy used encouraged much interactions and motivated them to think, and that teacher's appropriate feedbacks were helpful to their understanding scientific concepts.

• Journal of the Korean Chemical Society
• /
• v.46 no.6
• /
• pp.569-580
• /
• 2002

The purpose of this study was to analyze the problem-solving process of student's compensation con-cept.For this purpose, verbal interactions during activities were audio-taped, transcribed, and analyzed. And classroom observation and interview with students were carried out. Students who were superior in mathematical operations tended to explain compensation concept using proportionality. On the other hand, students who had low level of conservation concept can not connect 'relation of two variables' with 'conservation of equilibrium' at the formation process of com-pensation concept. Students who succeed in the formation of compensation concept showed high level of conservation concept. To promote the formation of compensation concept, it is necessary that how to develop proportional concept and conservation concept as closely related with compensation concept should be studied.

• Journal of the Korean Chemical Society
• /
• v.59 no.1
• /
• pp.78-87
• /
• 2015

The purpose of this study was to investigate the argumentation of middle school students during the argument-based inquiry. A total of sixty eight 8th grade middle school students participated in this study and they performed six argument-based inquiry programs. Data were collected from two of the latest programs by audio-recording and transcription of each group engaging in argumentation. The study findings showed that; first, the most frequent element of argumentation in the all of stages of the two programs was following order: 'claim' and 'request and response' and 'simple agreement'. The most active argumentation was showed at the designing experiments stage and the most inactive was showed at the generating questions stage. Second, as a result of analyzing the argumentation level for each stage of the argument-based inquiry, a high level of argumentation was shown at the claim and evidence stage, and a low level of argumentation was shown at the generating questions stage in the argumentation structure. As a result of the validity of argumentation, the validity of argumentation was the highest level in the claim and evidence stage.

• Journal of the Korean Society of School Health
• /
• v.22 no.2
• /
• pp.1-11
• /
• 2009

Purpose : The purpose of this study was to examine aggression of middle school girls with type of school and gender role identity. Method : The subjects of this study were 526 second-year middle school girls (265 girls in the coeducational middle schools, 261 girls in the girls' middle schools) in Busan. This study was conducted from 14th to 29th of December, 2008 using Korean Sex Role Inventory(KSRI) and Aggression Inventory. Results : 1. There was statistically significant difference in gender role identity types according school types ($x^2$=8.813, p=.032). 2. The whole aggression grade point average was 1.58${\pm}$.40 points(highest score: 4), and reactive-overt aggression was highest in the aggression types(2.06${\pm}$.63). 3. There was not statistically significant difference in aggression of middle school girls according to type of school (t=.188, p=.664). 4. There was statistically significant difference in degrees of aggression according to gender role identity types. The degrees of aggression in masculinity type was highest [grade point average was 1.70${\pm}$.44 points(highest score: 4)]. 5. There was not interactive effect in aggression between type of school and type of gender role identity. Conclusions : The findings of this study contribute to providing basic data for development of education programs or activities for middle school girls to relieve aggression according to gender role identity types.

• Journal of The Korean Association For Science Education
• /
• v.22 no.3
• /
• pp.508-516
• /
• 2002

This study investigated the influences of group composition in cooperative computer-assisted instruction (CAI) upon students' conceptual understandings, application abilities, learning motivations, and the perceptions of involvement. Seventh graders (N=97) were selected from a co-ed middle school in Seoul, and taught about 'motion of molecules' for 5 class hours. In the two treatment groups with cooperative CAI strategy, homogeneous and heterogeneous small groups were organized by the previous science achievement. Traditional instructions were administered to the comparison group. Two-way ANCOVA results revealed that the scores of the conception test for the treatment groups were significantly higher than those for the comparison group. However, there was no difference between the homogeneous and the heterogeneous groups. The scores of the three groups did not differ significantly in the application test and the learning motivation test. However, the perceptions of involvement for the treatment groups were more positive than those for the comparison group.

• Journal of Digital Convergence
• /
• v.15 no.1
• /
• pp.1-9
• /
• 2017

The purpose of this study is to investigate the differences of the mobile phone overuse by gender and school levels. For this study, 565 middle and high school students in Gyeonggi province answered the self-report survey, 253 students were extracted as an overuse group, and the data were analyzed by one-way MANOVA. The results showed that 'daily disturbance' was a common major factor in gender and school level difference and 'school life disturbance', 'with draw' and 'tolerance' were added in school level difference. Based on the results, this study suggested users' characteristics such as gender and school level should be taken into prevention and treatment of mobile phone overuse.

• Journal of the Korean Chemical Society
• /
• v.60 no.1
• /
• pp.39-47
• /
• 2016

The purpose of this study was to investigate the impact of negotiation in Argument-Based Inquiry on students’ claim and evidence. A total of 126 first grade middle school students participated in this study and they performed five Argument-Based Inquiry (ABI) programs for one academic a year. To investigate the process of generating claim and evidence through the ABI, we interviewed students after they completed five ABI activities. The study findings showed that students ability to make claim and evidence improved as they progressed from individual activity to group activity in ABI activity and as ABI activities. The results also showed that students generated high level of claim and evidence through internal and external negotiation in ABI programs.

• Journal of rehabilitation welfare engineering & assistive technology
• /
• v.7 no.1
• /
• pp.1-11
• /
• 2013

The purpose of this study was to investigate the analysis on exercise effect of basic physical fitness, flexibility and muscle function using electric horseback riding machine. Subjects were ten males and ten females who were 20th aged young adults. They exercised every 45-min a day. Horse riding exercise has progressed 3-days a week till 4-weeks. We measured contents of basic physical fitness, flexibility and joint torque in lumbar. The results showed that contents of human body effect were higher than before exercise. We thought that stimulated by 3-D movement in horseback riding exercise instrument could be activated joints and muscles with the unused generally This continuous movement could reduce tonus of muscle and relax stiff muscles. horseback riding have significant effect with whole body exercise, also it could provide efficient exercise for the elder and disabled person.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.7
• /
• pp.562-570
• /
• 2019

This study examined the factors affecting the underweight of Korean adolescents using data from Korea youth risk behavior web-based survey, which are national health statistics. This is a second data analysis study using the 13th Korea youth risk behavior web-based survey. The subjects were 48,242 adolescents who range from the first-year middle school students to the third-year high school students. The measurement variables were classified into demographic, physical activity, dietary, and mental health characteristics. The collected data were analyzed by logistic regression analysis. The factors affecting the underweight of Korean adolescents were sex, school type, academic performance, economic level, physical activities, weight control efforts, ramen intake, confectionary intake, stress, and subjective sleep fulfillment rate. Based on the results of this study, we need to search for the measures to help underweight adolescents recover their proper weight.