• Journal of the Korean School Mathematics Society
• /
• v.19 no.4
• /
• pp.357-371
• /
• 2016

The purpose of this study was to decide the task space and Rating Scheme of task difficulty in complicated mathematical modelling situations. One of main objective was also to conform the validation of Rating Scheme to determine the degree of difficulty by comparing the student performance with the statement of the theoretical model. In spring 2014, the experimental setting was in Modelling Course for 38 in-service teachers in mathematics education. In conclusions, we developed the Model of Task Space based on their solution paths in mathematical modelling tasks and Rating Scheme for task difficulty. The Validity of Rating Scheme to determine the degree of task difficulty based on comparing the student performance gave us the meaningful results. Within a modelling task the student performance verifies the degree of difficulty in terms of scoring higher using solution approaches determined as easier and vice versa. Another finding was some relations among three research topics, that is, degree of task difficulty on rating scheme, levels of students performance and numbers of specific heuristic. Those three topics showed the impressive consistence pattern.

• Journal of the Korean School Mathematics Society
• /
• v.13 no.2
• /
• pp.323-343
• /
• 2010

The purpose of the study was to analyze difficulty analyzed through a quantitative method examining rate of correct answerers to each questions in the side of difficulty that students solving questions felt by finding variables to predict difficulty of questions in an objective way, not in an intuitive way, and examining what variables difficulty that each student solving questions felt depended on. The study divided 6 students in the 3rd grade of a high school into a two-person group or a three-person group and observed their question-solving process the total 11times for three months from March, to May. The study an alyzed what variables difficulty that each student felt depended on through semi-structuralized interview. As a result, the study could see that difficulty of questions depended on contents, strangeness of material, behavioral range, type of questions and complexity of questions.

• Speech Sciences
• /
• v.11 no.2
• /
• pp.105-117
• /
• 2004

Recently, many scholars have emphasized the importance of English listening ability for smoother communication. Most audio materials, however, were recorded in a quiet sound-proof booth. Therefore, students who have spent so much time listening to the ideal audio materials are expected to have difficulty communicating with native speakers in the real life. In this study, we examined how well thirty three Korean university students and five native speakers will repeat the recorded English sentences under noise and speed conditions. The subjects' production was scored by listening to each recorded sentence and counting the number of words correctly produced and determined the percent ratios of correctly produced words to the total words in each sentence. Results showed that the student group correctly repeated around 65% of all the words in each sentence while the native speakers demonstrated almost perfect match. It seemed that the students had difficulty perceiving and repeating function words in various conditions. Also, high-proficiency student group outperformed the low-proficiency student group particularly in their repetition of function words. In addition, the student subjects' accuracy of repetition remarkably dropped when the normal sentences were both sped up and mixed with noise. Finally, it was observed that the Korean students' percent correct ratio fell down as the stimulus sentence became longer.

• Journal of Korean Dental Science
• /
• v.12 no.2
• /
• pp.58-65
• /
• 2019

Purpose: This study was aimed to investigate the possibility of utilizing smart device-based test (SBT) for competency evaluation in dental education and to analyze the student responses on overall competency evaluation using SBT method, in comparison to ubiquitous-based test (UBT). Materials and Methods: Questionnaire surveys have been conducted at Yonsei University College of Dentistry from 2015 to 2018 to obtain students' feedback on the application of SBT to competency evaluation. In addition, in order to supplement the competency evaluation procedure, considerations were explored by comparing the expected and actual difficulty of each item when preparing items for competency evaluation with SBT. Result: According to the survey results, student responses between the initial two years (2015 and 2016) differed from those in next two years (2017 and 2018). Students in 2017 and 2018 had more positive responses on competency evaluation with SBT. To determine the test validity, criterion-referenced evaluation was adopted to compare the data in 2017 and 2018 and slight differences in test difficulty in 2018 between the expected and actual difficulty of items were found. Conclusion: The results indicated that SBT was more appropriate for competency evaluation than UBT, based on four-year period of competency evaluation. The SBT was not affected by either the file size or the number of test-takers. Interestingly, students were not sensitive to test version of competency evaluation (paper-based test and SBT). This study suggests that the quality of the test items should be measured by continuous monitoring of the expected and actual difficulty of items for determining test validity. More detailed results and discussions of the findings are given for the development of test procedure and further potential research directions in dental education.

• Journal of Digital Convergence
• /
• v.18 no.11
• /
• pp.51-58
• /
• 2020

The purpose of this study was to provide research results on how teacher background variables and teacher efficacy affect the teacher's instructional behavior of elementary school teachers in student participatory classes. A survey was conducted on 122 elementary school teachers in the G area and a regression analysis was conducted to analyze the relationship of influence between variables. As a result of the regression analysis, self-regulation efficiency and task difficulty preference had a significant impact on elementary teachers' instructional behavior. As for teaching knowledge, class motivation, which are sub-variable factors in class behavior, self-regulating efficacy had a higher influence than task difficulty preference and for class communication, task difficulty preference had a higher influence than self-regulating efficacy. Based on the results of the study, we considered ways to show desirable teaching behavior of elementary school teachers in student participatory classes.

• Journal of Gifted/Talented Education
• /
• v.22 no.3
• /
• pp.729-755
• /
• 2012

As an effort to understand alienated gifted students, we investigated learning characteristics and learning tactics of a scientifically gifted student with economic difficulty and physical disadvantage. The student we studied is attending the Saturday Physics Class which is an after school science activity offered by our university. We adopted techniques of qualitative case study. Participant observation was carried out at the field and the interview was done with the participant, his mother, and his teacher of 5th grade. Field documents and self-reports were used to understand the student synthetically. As a result, learning characteristics of the participant could be summarized as a spontaneous learning which originated from the internal motivation and struggle for learning to overcome the sense of inferiority and isolation from the peers. The participant adopted a strategic method for learning to satisfy his learning desire given the circumstance of socioeconomic and physical disadvantage: the three tactics we found were various learning routes, meta-cognitive ability and fervent response.

• East Asian mathematical journal
• /
• v.29 no.2
• /
• pp.207-239
• /
• 2013

This research is a study on student's understanding fundamental concepts of mathematical curriculum, especially in geometry domain. The goal of researching is to analyze student's concepts about that domain and get the mathematical teaching methods. We developed various questions of descriptive assessment. Then we set up the term, procedure of research for the understanding student's knowledge of geometric figures. And we analyze the student's understanding extent through investigating questions of descriptive assessment. In this research, we concluded that most of students are having difficulty with defining the fundamental concepts of mathematics, especially in geometry. Almost all the students defined the fundamental conceptions of mathematics obscurely and sometimes even missed indispensable properties. And they can't distinguish between concept definition and concept image. Prior to this study, we couldn't identify this problem. Here are some suggestions. First, take time to reflect on your previous mathematics method. And then compile some well-selected questions of descriptive assessment that tell us more about student's understanding in geometric concepts.

• Journal of Korea Multimedia Society
• /
• v.19 no.4
• /
• pp.780-788
• /
• 2016

Development of information and communication technologies has given a lot of changes in the business processing methods including the school and class managements. However, many business processing systems are still based on desktop computer. In particular, most of the class management system only supports desktop computers; hence school teachers have difficulty in using their class managements systems on mobile environment. In this paper, we proposed and developed a mobile classroom management system for teachers, which will easily handle information such as personal records of students, student counseling records, student life record and so on. The implementation of the application of mobile-based class management can be managed by many school elements including student register information, student evaluation records and transcripts, counseling report, and so on.

• Journal of the Korea Society of Computer and Information
• /
• v.16 no.2
• /
• pp.83-91
• /
• 2011

Much research has been conducted on the e-learning systems for recommending a learning content to a student based on the difficulty of it. The difficulty is one of the most important factors for selecting a learning content. In the existing learning content recommendation systems, the difficulty of a learning content is determined by the creator. Therefore, it is not easy to apply a standard rule to the difficulty as it is determined by a subjective method. In this paper, we propose an ontology-based method for determining the difficulty of a learning content in order to provide an objective measurement. Previously, ontologies and knowledge maps have been used to recommend a learning content. However, their methods have the same problem because the difficulty is also determined by the creator. In this research, we use an ontology representing the IS-A relationships between words. The difficulty of a learning content is the sum of the weighted path lengths of the words in the learning content. By using this kind of difficulty, we can provide an objective measurement and recommend the proper learning content most suitable for the student's current level.

• Journal of the Korean Home Economics Association
• /
• v.48 no.3
• /
• pp.31-41
• /
• 2010

This study analyzes the difficulties that student teachers, beginning teachers and experienced teachers face in the field of kindergarten, and urgent support requests. The total of participants was 372 of this number, 122 were student teachers, 118 were beginning teachers and 132 were experienced teachers. The results showed the difference in difficulties and the needed support requests among student teachers, beginning teachers and experienced teachers. Student teachers had the difficulty of time management, but beginning teachers and experienced teachers had trouble due to the nonexistence of assistant teachers. Student teachers required teaching strategies for starting relationships with children within responsibility. Beginning teachers and experienced teachers regarded the plan, practice, and evaluation of a program as the most needed support request. Collectively, the results revealed that expansion of the practice period is necessary for student teachers so that they can gain experience with children, parents, and the children's education institution with various opportunities as a learning course.