Browsing by Author "Bektas, Oktay"

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Adaptation of an Epistemological Belief Instrument Towards Chemistry and Chemistry Lessons
(Elsevier Science Bv, 2011) Yildiran, Demet; Demirci, Nilgun; Tuysuz, Mustafa; Bektas, Oktay; Geban, Omer
The purpose of this study was adapting an instrument into Turkish which is developed by a research group in California University for identifying pre-service science teachers' epistemological beliefs toward chemistry. The adapted instrument is a likert type instrument with five scales, includes 18 items and it was applied to 100 pre-service sicence teachers to determine their epistemological beliefs in 2009-2010 spring semester. The reliability of the instrument was found as .59. It was concluded that this adapted instrument can be used to determine teachers' and students' epistemological beliefs toward chemistry. (C) 2011 Published by Elsevier Ltd. Open access under CC BY-NC-ND license.
The Contribution of Constructivist Instruction Accompanied by Concept Mapping in Enhancing Pre-Service Chemistry Teachers' Conceptual Understanding of Chemistry in the Laboratory Course
(Springer, 2009) Aydin, Sevgi; Aydemir, Nurdane; Boz, Yezdan; Cetin-Dindar, Ayla; Bektas, Oktay
The present study aimed to evaluate whether a chemistry laboratory course called "Laboratory Experiments in Science Education" based on constructivist instruction accompanied with concept mapping enhanced pre-service chemistry teachers' conceptual understanding. Data were collected from five pre-service chemistry teachers at a university in Ankara by means of a concept test and semi-structured interviews. Results showed that pre-service teachers had some alternative conceptions about chemistry topics. Moreover, using constructivist instruction accompanied with concept maps as an instructional tool was effective to promote conceptual understanding. Participants thought that concept maps were useful especially in recognizing the relation between different chemistry concepts.
Examination of Science Self-Regulation Skills of Gifted and Non-Gifted Students
(Ceska Zemedelska Univ & Praze, 2021) Nacaroglu, Oguzhan; Bektas, Oktay; Tuysuz, Mustafa
The study aimed to examine and compare the science self-regulation skills of gifted and non-gifted students in this study. Survey design, one of the quantitative methods, was utilized in the research. The sample of the study consisted of 263 gifted students enrolled in science and art center and 482 non-gifted students located in the Eastern Anatolia Region of Turkey. Science Self-regulation Scale was used as a data collection tool in the research. Independent samples t-test and one-way analysis of variance were used in the analysis of the data. The findings showed that gifted and non-gifted students had high self-regulation skills towards science. In addition, it was found that although there was no statistically significant difference between the average scores of gifted female and male students on the overall scale, there was a significant difference in the other group. Moreover, while the difference between the mean scores obtained in the dimensions of Refinement, Time Organizing, Organizing, Help Seeking, Metacognitive Self-regulation, and Repetition was in favor of gifted students, it was in favor of non-gifted students regarding the mean scores of critical thinking and effort regulation dimensions. The conclusion and implication were discussed in line with these findings.
An Examination of the Self-Regulation for Science Learning of Middle School Students With Different Achievement Levels
(Wiley, 2023) Karaca, Melek; Bektas, Oktay; T. Celikkiran, Aysegul
This research aims to examine the self-regulation of students with different achievement levels toward science learning based on Zimmerman's model including three phases: forethought, performance, and self-reflection. The research was conducted based on the case study from the qualitative research method. The study group consisted of 12 students who have different academic achievement levels and are studying at different levels of a middle school in Kayseri province, Turkey. The data of the research were collected through semistructured interviews and analyzed using content analysis. It was determined that each phase of self-regulation was not compatible with academic achievement, and individual differences came to the fore in students' self-regulation. The authors concluded that a student's level in all subdimensions of self-regulation was not the same. They also found that not only academic achievement affected the subdimensions of self-regulation, but also individual factors and differences.
Examining the Emotional Semantic Orientation of Gifted Students Towards the Flipped Learning Model
(Springer, 2023) Nacaroglu, Oguzhan; Bektas, Oktay; Tuysuz, Mustafa
The aim of this study was to examine the emotional semantic orientation of gifted students towards the flipped learning model (FLM). An explanatory sequential design, one of the mixed research methods, was utilized in this research. Participants were 53 gifted students, who continued their education in a Science and Art Center in the Eastern Anatolia Region, in the first semester of the 2019-2020 academic year. Participants stated the FLM to be fun, different, instructive, useful, advantageous, and flexible in terms of in-class practices. They also found the FLM to be fun owing to its features such as facilitating learning, being flexible, and providing opportunities for practice. Moreover, the participants regarded the FLM as fun, useful, advantageous, flexible, and effective in terms of out-of-class practices. Another result was that no significant difference was found between the emotional semantic orientations of the female and male gifted students in terms of in-class practices. However, in terms of out-of-class practices, there was a significant difference between the scores obtained from the answers given for the effective-ineffective adjective pair in favor of male participants, while there a significant difference between the scores obtained from the answers given for the fun-boring adjective pair in favor of female participants. Investigation of integrating hybrid learning approaches such as the FLM and evaluating students' cognitive and affective developments in other disciplines and subjects should be conducted to obtain more data on this approach.
Pre-Service Chemistry Teachers' Knowledge Regarding Laboratory Equipment and Their Functions
(Elsevier Science Bv, 2011) Bektas, Oktay; Tuysuz, Mustafa; Kirbulut, Zubeyde Demet; Cetin-Dindar, Ayla
The purpose of the current study was to investigate pre-service chemistry teachers' knowledge about chemistry laboratory equipments and their functions. The sample of this study consisted of eight pre-service chemistry teachers. Open-ended questions were used in this study. The findings of this study showed that most of the participants mentioned the erlenmeyer and thermometer as laboratory equipments when they were asked to write the equipments that they remembered. Additionally, it was seen that participants had difficulties in explaining the function of the equipments. This study concluded that pre-service chemistry teachers did not identify laboratory equipments and know their functions appropriately. (c) 2011 Published by Elsevier Ltd. Open access under CC BY-NC-ND license.
Pre-Service Chemistry Teachers' Understanding of Ionization and Dissolution
(Elsevier Science Bv, 2011) Ekiz, Betul; Bektas, Oktay; Tuysuz, Mustafa; Uzuntiryaki, Esen; Kutucu, E. Selcan; Tarkin, Aysegul
The purpose of this study was to find out pre-service chemistry teachers' explanations and representations regarding ionization and dissolution concepts. Data were collected through open ended questions from seven respondents. Findings indicated that only three participants agreed that solid AgCI partially dissolves in water. Moreover, only two of them drew this process at the microscopic level correctly. Similarly, three respondents accepted that solid NaCI dissolves in water not ionizes. Moreover, only two of them were able to draw this process at the microscopic level correctly. Finally, one participant stated that gaseous HCl ionizes in the water. Also, none of the participants represented this process correctly. (c) 2011 Elsevier Ltd. Open access under CC BY-NC-ND license.
Pre-Service Chemistry Teachers' Understanding of Phase Changes and Dissolution at Macroscopic, Symbolic, and Microscopic Levels
(Elsevier Science Bv, 2011) Tuysuz, Mustafa; Ekiz, Betul; Bektas, Oktay; Uzuntiryaki, Esen; Tarkin, Aysegul; Kutucu, E. Selcan
The purpose of this study was to investigate how pre-service chemistry teachers use macroscopic, symbolic, and microscopic levels and how they integrate teaching strategies at these three levels while instructing phase changes and dissolution. Also, their opinions on the importance of using these three levels in their instructions were examined. The participants were seven pre-service chemistry teachers. Data were collected using open ended questions. Results indicated that pre-service chemistry teachers generally used demonstration, experimentation, and lecturing at macroscopic level. Although they believed that the use of the three levels promotes meaningful learning, they had some difficulties in integrating these levels with the contents during instruction. (c) 2011 Elsevier Ltd. Open access under CC BY-NC-ND license.
Pre-Service Physics and Chemistry Teachers' Conceptual Integration of Physics and Chemistry Concepts
(Eurasia, 2016) Tuysuz, Mustafa; Bektas, Oktay; Geban, Omer; Ozturk, Gokhan; Yalvac, Bugrahan
This study examines the pre-service teachers' opinions about conceptual integration (CI) and their understanding of it. A qualitative phenomenology design was used in the study. Data was collected through in-depth semi-structured interviews comprising ten guiding questions. Three pre-service physics and three pre-service chemistry teachers participated conveniently in the study. While the pre-service chemistry teachers took a course regarding the CI explicitly taught, the pre-service physics teachers were not subjected to any information relating to the CI in their course. Data was analyzed by forming the codes and themes. Generally speaking, while the pre-service chemistry teachers think that physics concepts should be used in the chemistry lessons, the preservice physics teachers believe that these two subjects' concepts generally are not related to each other. Moreover, the participants had some difficulties in understanding the CI between physics and chemistry concepts. The possible implication for science teacher education and research is discussed.