• Communications of Mathematical Education
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• v.31 no.3
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• pp.331-347
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• 2017

The purpose of this study is to develop a sample chapter of mathematics textbook at the first middle school according to the model of supporting learners' self-directed learning. The self-directed learning is a learning strategy to develop learner's ability to solve unstructured problems by himself or herself. Basically, the textbook should included learning objectives distinctively. Second textbook should consist of some appropriate method for learners to learn content. Third, it suggests some plans to utilize learning strategies of this model effectively when authors or developers develop textbooks in future. Based on those condition, it is also requested that the sample chapter of the textbook be develop in order to study interestingly as well as to implement self-directed study, and content materials using mixed diverse subjects would be included in the chapter. Furthermore, the sample chapter which is suitable to the semester of managing self-directed learning middle school would be developed. For this purpose, in this study the 'Plane shapes' was selected dealt with in the first middle school. The sample chapter is developed at first by the researchers and then revised and completed through the checking from the professionalists two times.

• Journal of Science Education
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• v.35 no.1
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• pp.91-101
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• 2011

In this study, Jigsaw III cooperative learning strategy and traditional learning strategy have been applied to the 'electricity' chapter of grade 8 science textbooks to know the effects of learning strategy, gender, and GPA on the students' science achievement and science learning attitude of middle school female students in gender-separated classes. For this purpose, 143 students of 4 classes in separated classes were chosen from a middle school in Daegu. One female class and one male class were assigned to the experimental group and other female class and male class were assigned to the control group. Traditional learning strategy was applied to the control group and the Jigsaw III cooperative learning strategy was applied to the experimental group. Four worksheets for expert groups were used for 18 hours through 5 weeks. Both tests for science achievement and learning attitude were administered as pre and post test. The test results were analyzed through analysis of covariance(ANCOVA) as pre test score as covariant The overall conclusions of this study were as follows: The Jigsaw III cooperative learning has improved science achievement, especially on subjective-type questions, of female students and mid-lower level students. The Jigsaw III Cooperative Learning has also improved self-directed attitude toward science learning. Female students have expressed more positive opinion about the Jigsaw III cooperative learning.

• Journal of vocational education research
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• v.29 no.3
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• pp.247-263
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• 2010

The purpose of this study is making the career education program related to the subject, Manual Training and Home Economics, to present the effective guidance and to improve career maturity of students about the unit, "Making a choice of career and Job ethics" of middle school senior's course. In order to estimate this program, 60 students of 2 classes were chosen as research subjects among middle school seniors and each of classes was divided into two groups, an experimental group and a control group. After the experimental group was trained the career education program related to Manual Training and Home Economics for 15 sessions, the effect was verified by comparing tests before and after program execution. In order to prove effects of the program. Each grade of both the experimental group and the control group was taken analysis of covariance (ANCOVA). Result of the program experiment is following. First, after executing the career education program related to Manual Training and Home Economics to the experimental group, participants showed that both attitude and ability for career maturity were improved in each sub-factor field of the career maturity as a result of tests before and after program execution. Second, in program satisfaction estimation, most of students had a positive attitude and in every time satisfaction, they made high estimation on the program, especially including the proper level of students and interesting activities. Finally, the final program was completed based on the result of effect analysis of the program.

• Communications of Mathematical Education
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• v.30 no.1
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• pp.23-46
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• 2016

This study is aimed to implement a preferred generalization classes for gifted students. By designing and applying the generalization lesson using GSP, we tried to investigate the characteristics on the class. To do this, we designed a lesson on generalization of Viviani theorem and applied to 13 8th grade students in a math gifted class. As results, we could extract five subjects as followings; mediating the conjecture by GSP and checking the pattern, misunderstanding the confirm by GSP as a proof and its overcoming, digressing from the topic and cognitive gap, completing the proof by incomplete conjecture, gap between the generalization and understanding generality. Based on this subjects, we discussed the educational implications in order to help implement a preferred generalization classes for gifted students.

• Journal of The Korean Association For Science Education
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• v.24 no.2
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• pp.298-306
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• 2004

The purpose of this study was to find out the operational status for the in-depth and supplementary class of middle school described in the 7th national science curriculum. To do this 455 students of 8th grade and 71 science teachers are administered questionaries which were developed to ask about whether or not execute the in-depth and supplementary class, the frequency of the execution, the way of forming groups and the contents of teaching etc.. The operation of the in-depth and supplementary class at middle school were prevented by following factors such as too many class time of teachers, overpopulation in class, insufficiency teaching materials and so on. Therefore, to solve these problems, various approaches should be adapted such as effective teaching method, teacher training program, specialized classroom, independent teaching on the part of teacher and so on.

• Journal of The Korean Association For Science Education
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• v.40 no.2
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• pp.227-236
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• 2020

This study examines the change in students' science attitude and the growth of their core competencies through science classes emphasizing digital literacy. To this end, we conducted a study on 116 first graders in C middle school in the C region, and entered a science class that emphasized digital literacy of 35 classes. First, as a result of examining the effect on science attitude, a statistically significant change (p<.05) was observed. The effect size for each subregion ranged from 0.67 to 1.52. Second, there were no differences in the overall frequency of growth perception according to the type of class that emphasized digital literacy. However, in the analysis of core competencies, Web-based classes did not show a large difference in frequency by core competencies, whereas high-tech classes were slightly different by core competencies. This is an implication for science education, and it is necessary to increase the utilization of science classes that emphasize digital literacy.

• Journal of Educational Research in Mathematics
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• v.21 no.2
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• pp.201-220
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• 2011

This study investigates levels of thinking of elementary and middle school students doing their tasks of explaining and dealing with variability. According to results, on the task of explaining variability in the measurement settings five levels of thinking were identified: a lack of understanding of explanation of the causes, an insufficient understanding of the causes, an offer of physical causes, consideration of unexplained causes as the source of variability, and consideration of unexplained causes as quasi-chance variability. Also, in the chance settings five levels of thinking were identified: a lack of understanding of explanation of the causes, an insufficient understanding of the causes, an offer of physical causes, recognition of chance variability, and consideration of causes of distribution. On the task of dealing with variability in both the measurement and chance settings five levels of thinking were identified: a lack of understanding of dealing with variability, no physical control and improper statistical control, no physical control and proper statistical control, physical control and improper statistical control, and physical control and proper statistical control.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.74-81
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• 2018

This study investigated the ecological factors influencing second-year middle school students' academic motivation. A total of 371 students were surveyed for this study and data were analyzed for descriptive statistics using SPSS Win 21.0. The results of this study revealed that female students showed higher academic motivation than male students. However, school life satisfaction was strong for both male and female students. Finally, the introduction of parent education programs that target children to improve learners' self-identity and parent-child or teacher-student communication programs are necessary to enhance academic motivation.

• Communications of Mathematical Education
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• v.27 no.4
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• pp.523-545
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• 2013

The purposes of the study were to analyze STEAM instructional materials to find research trends on STEAM instructional program and to develop mathematics-centered STEAM instructional program for middle school second graders. To conduct this study, the researcher collected total 123 research papers and thesis focused on the development of STEAM instructional material and deduced implications for the development of mathematics-centered STEAM instrucational materials from the findings. The researcher found that important components of such as 'context for learning', 'internalization-mmersion', 'new challenge', and 'self-assessment' in STEAM education were not reflected properly in 19 mathematics-centered STEAM instructional programs. Therefore, the researcher put more emphasis on those components in the process of developing mathematics-centered STEAM program.

• Journal of Korean Home Economics Education Association
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• v.18 no.4 s.42
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• pp.55-65
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• 2006

This study examined the effects of self-esteem, relationships with parents and peer relationships on adolescents' internet addiction among middle school students. Data were derived from 439 students in the 8th grade. The results of the study showed that internet addiction was higher in male adolescents compared to female adolescents. This study identified that internet addiction of male adolescents was affected by low levels of self-esteem and peer relationships. Poor relationship with parents and low levels of peer relationships were factors influencing internet addiction among female adolescents. It might be useful to improve interpersonal relations based on peers' interactions and to strengthen family relations in order to prevent internet addiction. In addition, it would help to develop educational programs and youth programs for preventing adolescents' internet addiction.