• Journal of the Korean Chemical Society
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• v.58 no.6
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• pp.630-637
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• 2014

In this study, we investigated the current situation of implementing cooperative learning (CL) in elementary science classes and teachers' perceptions toward CL in science instructions. Participants were 138 elementary school teachers and 96 of them had experiences of implementing CL in their science classes. We developed a questionnaire on the basis of previous studies. The results indicated that many teachers did not seem to comprehend CL and some of them did not seem to distinguish CL from the traditional small group learning. The teachers who had experiences of implementing CL tended to exhibit positive perceptions toward CL than their counterpart in the effects of CL category whereas they did not show any positive evidence in the processes of CL category. The influences of teaching career and the experience of participating inservice training about CL on teachers' perceptions toward CL were not clear. Educational implications are discussed.

• Journal of Engineering Education Research
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• v.8 no.2
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• pp.24-34
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• 2005

The purpose of this study was to investigate 1) learner's satisfaction and perception on PBL 2) the relationship between learning styles and PBL preferences 3) the effects of decreasing communication apprehension through PBL. The results were as follows: 1) the students were satisfied with PBL and perceived positively on PBL 2) the students with high participative or cooperative learning styles were satisfied with PBL and perceived more positively on PBL, but those who had avoidant or dependent learning styles didn't perceive positively on PBL 3) the degree of communication apprehension in meeting was decreased significantly. We expect this research to be foundation in instructional design of PBL with individual differences

• Journal of the Korean Society of Earth Science Education
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• v.3 no.2
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• pp.148-157
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• 2010

The purpose of this study is to examine the effect of small group inquiry activities using IIM on the science process skills and scientific attitudes of students in higher elementary grades. To verify research problems, the subjects of this study were fifth-grade students selected from two classes of an elementary school located in Busan : the research group was composed of thirty students who participated in small group inquiry activities using IIM teaching model situation, and the other was composed of thirty students(comparative group) who participated in a teacher map- based learning situation. For six weeks, the small group inquiry activities using IIM were executed in the research group, while the teacher-map based instruction was conducted in the comparative group Test showed the following results: First, the research group showed a significant improvement in their science process skills compared to the comparative group. Second, the research group did not show a significant improvement in their scientific attitudes compared to the comparative group. In conclusion, small group inquiry activities using the IIM teaching model was more effective than the teacher map-based teaching model on science process skills. However, since the study has a limit on the object of the study and the applied curriculum, the additional studies need to be conducted with an extended comparative group and curriculum.

• Journal of The Korean Association For Science Education
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• v.18 no.2
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• pp.201-208
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• 1998

Although cooperative learning strategies in many subject areas have been found to be effective, the effect of cooperative learning on academic achievement in science laboratory setting is not clear. Reported results on the effects of the strategies for higher achieving students are not also consistent. In this study, the cooperative learning strategies emphasizing student-centered learning which included higher order thinking activities were used in a elementary school science course. The cooperative and traditional learning groups were selected from fifth-grade classes, and taught about dissolution and solution for 16 class periods. The effects of the cooperative learning strategies upon students' academic achievement, science process skill, the attitude toward science instruction, and the perceptions of classroom environment were investigated. Two-way ANCOVA results revealed that the test scores of academic achievement and science process skill for the cooperative learning group were significantly higher than those of the traditional learning group. No interaction between the instruction and the level of previous achievement was found. The perceptions of confliction were higher in cooperative learning group. In the attitude toward science instruction and the perceptions of participation, however, no significant difference between the two groups was found. Educational implications are discussed.

• Journal of the Korean School Mathematics Society
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• v.11 no.2
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• pp.177-199
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• 2008

In the Netherlands, Streefland(Elbers, 2003) gave a solution on how teachers can help students to participate in the process of knowledge construction by investigating constructions and activities of a community of inquiry for a primary school students(between 11 and 13 years of age). In Australia, Goos(2004) analyzed the teacher's role in creating a classroom culture of inquiry, which appeared to be taken for granted by the Grade 12 group, for the Grade 11 students by classroom observation and interviews. In Korea, because of diverse obstacles with a university entrance examination, a study about teacher's role in inquiry-oriented instruction for high school mathematics schooling has rarely appeared in the literature. The purpose of this study is to investigate teacher's role for promoting and managing inquiry-oriented mathematics instruction effectively by a case study. To fulfill this purpose, we develop inquiry-oriented instruction model by investigating teacher's role as an assistant for helping students to do mathematical activity.

• Journal of the Korean School Mathematics Society
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• v.17 no.4
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• pp.465-492
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• 2014

In this study, through the analysis of the mathematics curriculum and textbooks, we produce the cooperative learning activity sheets which was appropriate instructional content for various levels. And, by using them appropriately at the levels of student learning on their own interest, we enhance academic achievement and cooperative learning attitudes. Specific for details for this study are as follows: First, through the applying a variety of the differentiated cooperative learning activity sheets and developing instruction learning, we improve the academic achievement. Second, through the making and utilizing the differentiated cooperative learning activity sheets and the interest and attitudes in mathematics, we improve the cooperative learning attitude. Third, through the levels of the subgroup cooperative learning, we improve the math learning abilities through a learner-centered. Further the purpose of this study is to bring up complementary cooperative spirit among colleagues.

• The Journal of the Korea Contents Association
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• v.11 no.8
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• pp.260-273
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• 2011

Utilizing cross-functional project teams is an attractive organizing option, particularly in solving complex and innovative problems that require diverse sources of information, knowledge, and expertise brought by individuals from different functional backgrounds. This study is aiming at finding the group dynamics surrounding and inside the teams for the better understand what makes cross-functional project teams effective. Adopting variables from small group research and organizational context research, I extract critical antecedents, mediator, and team-coaching that lead to team performance. Data from 32 cross-functional project teams consisting of 214 individual respondents are analyzed through regression analyses for hypotheses testing. Results of the analyses demonstrate that the team process and team performance are significantly affected by the composition of competence in team and team compensation. Also I find that team-coaching as a leadership behavior has influence on team process and team performance. Some implications, future research directions, and limitations are discussed.

• The Journal of the Korea Contents Association
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• v.13 no.9
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• pp.455-466
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• 2013

The purpose of this study was to develop a school violence prevention program "Modujikimi" for young children to be embedded in IrobiQ, the teacher assistive robot. The themes of this program consisted of basic character education, bullying prevention education and sexual violence prevention education. The activity types included large group, individual and small group activities, free choice activities, and finally parents' education, which included poems, fairy tales, music, art, sharing stories. Finally, the multi modal functions of the robot were employed: image on the screen, TTS (Text To Speech), touch function, recognition of sound and recording system. The robot content was demonstrated to thirty early childhood educators whose acceptability of the content was measured using questionnaires. And also the content was applied to children in daycare center. As a result, majority of them responded positively in acceptability. The results of this study suggest that the further research is needed to improve two-way interactivity of teacher assistive robot.

• The Korean Journal of Applied Statistics
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• v.26 no.3
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• pp.453-470
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• 2013

In this paper, we consider a Bayesian analysis of the dose-effect relationship of cadmium to evaluate a benchmark dose(BMD). For this purpose, two dose-response curves commonly used in the toxicity study are fitted based on Bayesian methods to the data collected from the scientific literature on cadmium toxicity. Specifically, Bayesian meta-analysis and hierarchical modeling build an overall dose-effect relationship that use a piecewise linear model and Hill model, where the inter-study heterogeneity and inter-individual variability of dose and effect such as gender, age and ethnicity are accounted. Estimation of the unknown parameters is made by using a Markov chain Monte Carlo algorithm based user-friendly software WinBUGS. Benchmark dose estimates are evaluated for various cut-offs and compared with different tested subpopulations with with gender, age and ethnicity based on these two Bayesian hierarchical models.

• Journal of the Korean Society for Library and Information Science
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• v.46 no.4
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• pp.189-206
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• 2012

The purpose of this study is to analyze the current states and characteristics of the information poor related to library and information services in Korea. This study aims to help libraries and the related authorities understand better the information poor and develop strategies customized with the specific needs of various subgroups, by examining the definitions of major terms from laws, regulations and literatures. This study confirms that most of the information poor have more than one disadvantage, and each subgroup has its own uniqueness and diverse subgroups. It also emphasizes that libraries should take into consideration their uniqueness and multiple difficulties, and develop more user-centered library and information services in order to resolve the information gap.