Melis Uyulgan | Dokuz Eylül University (original) (raw)
Papers by Melis Uyulgan
Educational policy analysis and strategic research, Sep 1, 2022
Acta Didactica Napocensia, 2016
The subject of molecular structures is one of the most important and complex subject in chemistry... more The subject of molecular structures is one of the most important and complex subject in chemistry which a majority of the undergraduate students have difficulties to understand its concepts and characteristics correctly. To comprehend the molecular structures and their characteristics the students need to understand related subjects such as Lewis dot structures, molecular geometry, bond polarity, molecular polarity, resonance and hybridization. This study investigated the conceptual understanding levels and misconceptions held by university students about molecular structures subject. The sample of the study comprised of 88 undergraduate students enrolled in the Department of Mathematics and Science Education, Faculty of Education, Turkey. The participants responded to open-ended and interview questions regarding the subject. Students' responses were analyzed and their conceptual understanding levels were determined. The results indicated that students had lack of knowledge and misconceptions about the subject although they studied it in the university. Especially, they had poor knowledge about the molecular geometry, molecular polarity, resonance, and hybridization in molecular structures except for Lewis dot structures of molecules. Accordingly, implications have been made for more effective teaching approaches to ensure better understanding of the subjects.
Procedia Computer Science, 2011
Textbooks are the tools that act as a resource to teachers' and adults' learning lives [1]. Textb... more Textbooks are the tools that act as a resource to teachers' and adults' learning lives [1]. Textbooks are the most reliable information source books when other sources of information such as the internet, educational games, demonstrations etc. are inadequate. Since students often gain knowledge from their own books by themselves, the information are of scientific value, accurate and reliable [2]. It was found that textbooks contain incorrect and inadequate information as a result of research conducted by The Turkish Academy of Sciences (TÜBA) [3]. This research was aimed to evaluate teachers' and students' opinions about secondary education chemistry textbooks. Working group of this study includes respectively chemistry teachers, secondary school students and Dokuz Eylul University students of chemistry education. A questionnaire was applied to determine teachers' and students' opinions related to textbooks, at the same time semi structured interviews were conducted with teachers and students. Applied questionnaire consists of seven sub-dimensions. These subdimensions are general physical properties, cover features, interior cover features, preparatory studies, evaluation studies, content and method. Opinions of teachers and students on this dimensions are determined by three evaluation criteria being yes, no and partly. In the results of the semi structured interviews, it was determined that the content of textbooks was very intensive for the secondary school students and the preparatory studies were insufficient. In addition to these, it was found that the activities in the textbooks were few.
Journal of Baltic Science Education, Dec 15, 2014
Chemistry Education. Research and Practice, 2016
This study sought to determine the levels of conceptual understanding of undergraduate students r... more This study sought to determine the levels of conceptual understanding of undergraduate students regarding organic compounds within different functional groups. A total of 60 students who were enrolled in the Department of Secondary Science and Mathematics Education of a Faculty of Education at a state university in Turkey and who had followed an Organic Chemistry Laboratory Course participated in the study. The data were collected using two tools: functional group worksheets and concept maps. Both qualitative and quantitative evaluations were used in analyzing the data. The findings showed that the students generally had low levels of understanding of concepts relating to functional groups, and they exhibited a considerable number of misconceptions. Considering the findings more fully, it was determined that students have remarkable misconceptions and low levels of understanding about certain topics regarding functional groups, including the physical properties of functional groups, intermolecular bonds, acidity and basicity, reduction and oxidation, stereoisomerism and structural isomerism, and aromaticity and aliphaticity, as well as other organic chemistry concepts (e.g. decarboxylation, oxyacide, and phenol). The results suggest that since students are unable to adequately comprehend the subjects of general chemistry, such as intramolecular and intermolecular bonds, acidity and basicity, oxidation and reduction and determination of molecular structures, they fail to accurately transfer their knowledge to learning about organic chemistry. In order to promote students' understanding of functional groups and prevent related misconceptions, it is recommended that basic chemistry topics should be reinforced, and the relationship between students' current knowledge and the new information to be learned in organic chemistry should be emphasized with the help of activities in which various forms of thinking are used.
Journal of Baltic Science Education, Jun 25, 2018
Procedia Computer Science, 2011
It is very important that determining students cognitive structures for acquiring meaningful lear... more It is very important that determining students cognitive structures for acquiring meaningful learning. The main purpose of this study to determine pre-service chemistry teachers' cognitive structures relating to acid-base with word associations test (WAT). The sample of study consisted of 56 pre-service chemistry teachers who have been studying in chemistry education department at Dokuz Eylul University, in Turkey. At the end of study, it was found that WAT clearly distinguished between first and third year students. Moreover, this result was supported by the findings that the third year students generally produced more associations than first year students and third year students' responses were more homogeneous. Also, forming of associations like acid PH, bases-hydroxyl, showed that pre-service teachers accomplish meaningful associations about the basic concepts of acid-base
Bartın üniversitesi eğitim fakültesi dergisi, Oct 30, 2017
Bu araştırmanın amacı, ortaöğretim öğrencilerinin akademik başarıları üzerine kişisel faktörlerde... more Bu araştırmanın amacı, ortaöğretim öğrencilerinin akademik başarıları üzerine kişisel faktörlerden akademik içsel motivasyon ve genel özyeterlilik faktörlerinin yordayıcı etkilerini incelemektir. Araştırmaya %53,9'u kız, %46,1'i erkek olmak üzere toplam 254 ortaöğretim öğrencisi katılmıştır. Araştırmanın örneklemi, İzmir ili kapsamında tesadüfi örnekleme yöntemiyle seçilen bir Anadolu Lisesi ve bir Meslek Lisesi olmak üzere toplam iki lisenin 9., 10., 11. ve 12. sınıflarından rastgele seçilen ikişer şube ile oluşturulmuştur. Araştırma betimsel araştırma yöntemlerinden ilişkisel tarama modelinde gerçekleştirilmiştir. Araştırmada veri toplama aracı olarak kişisel bilgi formu, akademik içsel motivasyon ölçeği ve genel özyeterlilik ölçeği kullanılmıştır. Ortaöğretim öğrencilerinin akademik başarıları ile akademik içsel motivasyonları ve genel özyeterlilikleri arasındaki ilişkinin belirlenmesinde Pearson Momentler Çarpımı Korelasyon katsayısından yararlanılmıştır. Öğrencilerin, akademik içsel motivasyonları ve genel özyeterlilikleri alt faktörlerinin akademik başarılarındaki varyansın ne kadarını açıkladığını saptamak için ise çoklu doğrusal regresyon analizi kullanılmıştır. Araştırma sonuçlarından öğrencilerin akademik başarılarını yordayan kişisel faktörlerin önem sırasının başlama, başarısızlık korkusu, sosyal kabul, sürdürme çabası-ısrar ve başarı gereksinimi şeklinde olduğu ortaya çıkmıştır. Ayrıca tüm alt faktörlerin akademik başarı üzerindeki varyansın %56'sını açıkladığı bulunmuştur.
Kastamonu eğitim dergisi, Sep 15, 2015
Bu araştırma, alan öğretmen adaylarının seçimine ve atamalarına yönelik görüşlerinin incelenmesi ... more Bu araştırma, alan öğretmen adaylarının seçimine ve atamalarına yönelik görüşlerinin incelenmesi amacıyla yapılmıştır. Araştırmaya Ege Bölgesi'ndeki bir üniversitenin Eğitim Fakültesi'nin Ortaöğretim Fen ve Matematik Alanları Eğitimi Bölümü'nde öğrenim gören toplam 180 öğretmen adayı katılmıştır. Araştırmada betimsel araştırma yaklaşımı esas alınarak veri toplama yöntemlerinden biri olan açık uçlu soru tekniği uygulanmıştır. Veri toplama aracı olarak toplam 7 açık uçlu sorudan oluşan bir anket kullanılmıştır. Verilerin analizinde içerik analizi tekniği uygulanmıştır. Elde edilen bulgulardan bazıları öğretmen adaylarının alan öğretmenliği seçiminde uygulanan sınava bakış açılarının olumsuz yönde olduğunu, kaygı ve yetersizlik hissettiklerini göstermektedir. Ayrıca öğretmen adayları sadece bilişsel özelliklerin değerlendirildiği bir sınav sonucuna bağlı olarak yapılan öğretmen atamalarını yetersiz olarak değerlendirmişlerdir.
Irish Educational Studies, Jun 13, 2014
DergiPark (Istanbul University), Dec 1, 2011
In this research, an achievement test about global warming was administered to 193 selected stude... more In this research, an achievement test about global warming was administered to 193 selected students attending various high schools in Turkey. Their knowledge about global warming on theoretical, contemporary effects, and necessary precautions were measured. Using a self disclosure form, some characteristics of the students such as academic backgrounds of their parents, type of high school, and their economic status and whether the students had been involved in an activity on the subject before the examination were obtained. The data was analyzed by the statistical programs: Statistical Package for the Social Sciences (SPSS), Finesse, and then t test, Analysis of Variance (ANOVA), and correlation results were determined. The reliability (Cronbach's ) of the test was found to be 0.734. Considering the findings of the research, of three groups of question, the students were most knowledgeable about the effects of global warming.
Bartın üniversitesi eğitim fakültesi dergisi, 2017
Bu araştırmanın amacı, ortaöğretim öğrencilerinin akademik başarıları üzerine kişisel faktörlerde... more Bu araştırmanın amacı, ortaöğretim öğrencilerinin akademik başarıları üzerine kişisel faktörlerden akademik içsel motivasyon ve genel özyeterlilik faktörlerinin yordayıcı etkilerini incelemektir. Araştırmaya %53,9'u kız, %46,1'i erkek olmak üzere toplam 254 ortaöğretim öğrencisi katılmıştır. Araştırmanın örneklemi, İzmir ili kapsamında tesadüfi örnekleme yöntemiyle seçilen bir Anadolu Lisesi ve bir Meslek Lisesi olmak üzere toplam iki lisenin 9., 10., 11. ve 12. sınıflarından rastgele seçilen ikişer şube ile oluşturulmuştur. Araştırma betimsel araştırma yöntemlerinden ilişkisel tarama modelinde gerçekleştirilmiştir. Araştırmada veri toplama aracı olarak kişisel bilgi formu, akademik içsel motivasyon ölçeği ve genel özyeterlilik ölçeği kullanılmıştır. Ortaöğretim öğrencilerinin akademik başarıları ile akademik içsel motivasyonları ve genel özyeterlilikleri arasındaki ilişkinin belirlenmesinde Pearson Momentler Çarpımı Korelasyon katsayısından yararlanılmıştır. Öğrencilerin, akademik içsel motivasyonları ve genel özyeterlilikleri alt faktörlerinin akademik başarılarındaki varyansın ne kadarını açıkladığını saptamak için ise çoklu doğrusal regresyon analizi kullanılmıştır. Araştırma sonuçlarından öğrencilerin akademik başarılarını yordayan kişisel faktörlerin önem sırasının başlama, başarısızlık korkusu, sosyal kabul, sürdürme çabası-ısrar ve başarı gereksinimi şeklinde olduğu ortaya çıkmıştır. Ayrıca tüm alt faktörlerin akademik başarı üzerindeki varyansın %56'sını açıkladığı bulunmuştur.
Öğretim Teknolojisi ve Hayat Boyu Öğrenme Dergisi - Instructional Technology and Lifelong Learning
Bu araştırma, kimya öğretmeni adaylarının Web 2.0 araçlarını kullanma yeterliklerini ve bu araçla... more Bu araştırma, kimya öğretmeni adaylarının Web 2.0 araçlarını kullanma yeterliklerini ve bu araçlara ilişkin görüşlerini kimya öğretimi bağlamında araştırmayı amaçlamıştır. Betimleyici araştırma tasarımı kullanılmıştır. Katılımcılar, Türkiye'de bir devlet üniversitesinin Kimya Eğitimi Bölümü'nde öğrenim gören 27 öğretmen adayıdır. Veriler Web 2.0 Araçları Kullanım Yeterliliği Ölçeği ve Yapılandırılmış Görüşme Formu aracılığıyla toplanmıştır. Sonuçlar, adayların Web 2.0 araçlarını kullanma konusunda orta düzeyde yetkin olduğunu göstermiştir. Adayların çoğu bu araçları bu çalışma çerçevesinde ilk kez deneyimlemişlerdir ve önceden herhangi bir uzmanlığa sahip değillerdir. Görüşme sonuçları, adayların kimya kavramlarının soyut anlamlarından dolayı anlaşılmasının zor olduğunu ve herhangi bir konunun bir karikatür veya animasyon şeklinde Web 2.0 araçları kullanılarak görselleştirildiğinde daha başarılı bir şekilde öğretilebileceğini düşündüklerini göstermiştir. Araştırma sonuçları ...
Journal of Science Learning, 2022
The study aims to determine the subject matter knowledge of Prospective Primary School Teachers (... more The study aims to determine the subject matter knowledge of Prospective Primary School Teachers (PPSTs) and analyze their chemical representation levels on crystallization. The study was carried out with descriptive research with a qualitative approach based on this purpose. The study participants were eighty freshman students studying at the Department of Primary Education in a state university in the Aegean Region of Turkey. The data were collected using a worksheet containing seven open-ended questions regarding the crystallization experiment. The questions were about the solubility of salt in water, the formation of the salt water and its solubility-temperature graph, the formation of the saturated salt water, and the appearance of particles formed during crystallization. A worksheet was prepared to determine the chemical representation levels of the PPSTs, and the data were subjected to document analysis. The researchers conducted a demonstration experiment and an animated vide...
Journal of Baltic Science Education, 2014
In this research, the comprehension levels and misconceptions of university students on the subje... more In this research, the comprehension levels and misconceptions of university students on the subject of molecular geometry were determined via a two-tier diagnostic test consisting of 25 items developed by researchers. It was applied on 110 university students. The reliability and validity tests and item analyses were conducted in relation to the test, and the difficulty and discrimination indices of the items were detected. The reliability coefficient of the test was found to be 0.856 while the mean difficulty value of the test was 0.487. According to the findings obtained from the second tier of the test containing open end questions, the students had a great deal of wrong information and numerous misconceptions in relation to the molecular geometry. Such statements as “atoms move in the resonance structure” and “bond angles of two molecules having a trigonal pyramidal shape cannot be different” are counted among the most important misconceptions determined in the study. Key words:...
Chemistry Education Research and Practice, 2017
The current study examines the performance and achievement of students in the Systematic Qualitat... more The current study examines the performance and achievement of students in the Systematic Qualitative Analyses of Cations (SQACs). We sought answers to questions such as, ‘What are the students’ levels of performance?’ and ‘What is the relation between the average scores for performance and achievement?’. This was done by using the I diagram as a tool within a Guided Inquiry Learning Approach (GILA), which is based on the constructivist theory. The sample consisted of sophomore students (N = 31) taking the Analytical Chemistry Laboratory-I course and attending the Chemistry Teaching Program of the Faculty of Education of a state university in the Aegean region of Turkey. During the analyses, the students attempted to solve specific problems and find the results of their qualitative analyses as they followed the sections of I diagram step by step under the guidance of researchers. They also tried to find solutions to problems through logical reasoning and discussions with each other. ...
International Journal of Higher Education, 2016
Journal of Education in Science, Environment and Health
It is aimed to analyze the change of the pre-service science teachers‘ attitudes towards chemistr... more It is aimed to analyze the change of the pre-service science teachers‘ attitudes towards chemistry laboratories using case-based learning, an active learning method, in this research. This research is an semiexperimental study with a control group. The sample of this research was originated by the second-year students (N=61) of the department of science education in Dokuz Eylul University, Faculty of Buca Education. In the first stage of the research, a case about the experiment of determining the ionization constant of weak acid (Ka) was created and the case was discussed among the student groups in the experimental group as a workshop. In the second stage, the experiment was performed in the laboratory. And in the control group, the experiment was performed using conventional teaching methods. In conclusion, the effectiveness of case-based learning method in the attitudes of students towards chemistry laboratories was analyzed
Journal of Baltic Science Education
This research aimed to reveal the opinions of the university students who conducted original educ... more This research aimed to reveal the opinions of the university students who conducted original educational videos context for the experiments in the Biochemistry laboratory course. Participants were fourth year students (N=40) of the Mathematics and Science Education Department, in Chemistry Education Program. A case study was used and carried out during the Spring term of 2014 at the Faculty of Education of Dokuz Eylul University in Izmir, Turkey. The students designed and took participation in educational short videos. Besides, each group students prepared poster presentations of their video at the end of the 14-week implementation process. To collect data, semi-structured interviews were used. The interview results of the research showed that learning was more meaningful and valid through this laboratory course because the students attended the course with interest and favor and motivated positively. Eventually, the educational short videos can be a powerful convincing learning too...
Educational policy analysis and strategic research, Sep 1, 2022
Acta Didactica Napocensia, 2016
The subject of molecular structures is one of the most important and complex subject in chemistry... more The subject of molecular structures is one of the most important and complex subject in chemistry which a majority of the undergraduate students have difficulties to understand its concepts and characteristics correctly. To comprehend the molecular structures and their characteristics the students need to understand related subjects such as Lewis dot structures, molecular geometry, bond polarity, molecular polarity, resonance and hybridization. This study investigated the conceptual understanding levels and misconceptions held by university students about molecular structures subject. The sample of the study comprised of 88 undergraduate students enrolled in the Department of Mathematics and Science Education, Faculty of Education, Turkey. The participants responded to open-ended and interview questions regarding the subject. Students' responses were analyzed and their conceptual understanding levels were determined. The results indicated that students had lack of knowledge and misconceptions about the subject although they studied it in the university. Especially, they had poor knowledge about the molecular geometry, molecular polarity, resonance, and hybridization in molecular structures except for Lewis dot structures of molecules. Accordingly, implications have been made for more effective teaching approaches to ensure better understanding of the subjects.
Procedia Computer Science, 2011
Textbooks are the tools that act as a resource to teachers' and adults' learning lives [1]. Textb... more Textbooks are the tools that act as a resource to teachers' and adults' learning lives [1]. Textbooks are the most reliable information source books when other sources of information such as the internet, educational games, demonstrations etc. are inadequate. Since students often gain knowledge from their own books by themselves, the information are of scientific value, accurate and reliable [2]. It was found that textbooks contain incorrect and inadequate information as a result of research conducted by The Turkish Academy of Sciences (TÜBA) [3]. This research was aimed to evaluate teachers' and students' opinions about secondary education chemistry textbooks. Working group of this study includes respectively chemistry teachers, secondary school students and Dokuz Eylul University students of chemistry education. A questionnaire was applied to determine teachers' and students' opinions related to textbooks, at the same time semi structured interviews were conducted with teachers and students. Applied questionnaire consists of seven sub-dimensions. These subdimensions are general physical properties, cover features, interior cover features, preparatory studies, evaluation studies, content and method. Opinions of teachers and students on this dimensions are determined by three evaluation criteria being yes, no and partly. In the results of the semi structured interviews, it was determined that the content of textbooks was very intensive for the secondary school students and the preparatory studies were insufficient. In addition to these, it was found that the activities in the textbooks were few.
Journal of Baltic Science Education, Dec 15, 2014
Chemistry Education. Research and Practice, 2016
This study sought to determine the levels of conceptual understanding of undergraduate students r... more This study sought to determine the levels of conceptual understanding of undergraduate students regarding organic compounds within different functional groups. A total of 60 students who were enrolled in the Department of Secondary Science and Mathematics Education of a Faculty of Education at a state university in Turkey and who had followed an Organic Chemistry Laboratory Course participated in the study. The data were collected using two tools: functional group worksheets and concept maps. Both qualitative and quantitative evaluations were used in analyzing the data. The findings showed that the students generally had low levels of understanding of concepts relating to functional groups, and they exhibited a considerable number of misconceptions. Considering the findings more fully, it was determined that students have remarkable misconceptions and low levels of understanding about certain topics regarding functional groups, including the physical properties of functional groups, intermolecular bonds, acidity and basicity, reduction and oxidation, stereoisomerism and structural isomerism, and aromaticity and aliphaticity, as well as other organic chemistry concepts (e.g. decarboxylation, oxyacide, and phenol). The results suggest that since students are unable to adequately comprehend the subjects of general chemistry, such as intramolecular and intermolecular bonds, acidity and basicity, oxidation and reduction and determination of molecular structures, they fail to accurately transfer their knowledge to learning about organic chemistry. In order to promote students' understanding of functional groups and prevent related misconceptions, it is recommended that basic chemistry topics should be reinforced, and the relationship between students' current knowledge and the new information to be learned in organic chemistry should be emphasized with the help of activities in which various forms of thinking are used.
Journal of Baltic Science Education, Jun 25, 2018
Procedia Computer Science, 2011
It is very important that determining students cognitive structures for acquiring meaningful lear... more It is very important that determining students cognitive structures for acquiring meaningful learning. The main purpose of this study to determine pre-service chemistry teachers' cognitive structures relating to acid-base with word associations test (WAT). The sample of study consisted of 56 pre-service chemistry teachers who have been studying in chemistry education department at Dokuz Eylul University, in Turkey. At the end of study, it was found that WAT clearly distinguished between first and third year students. Moreover, this result was supported by the findings that the third year students generally produced more associations than first year students and third year students' responses were more homogeneous. Also, forming of associations like acid PH, bases-hydroxyl, showed that pre-service teachers accomplish meaningful associations about the basic concepts of acid-base
Bartın üniversitesi eğitim fakültesi dergisi, Oct 30, 2017
Bu araştırmanın amacı, ortaöğretim öğrencilerinin akademik başarıları üzerine kişisel faktörlerde... more Bu araştırmanın amacı, ortaöğretim öğrencilerinin akademik başarıları üzerine kişisel faktörlerden akademik içsel motivasyon ve genel özyeterlilik faktörlerinin yordayıcı etkilerini incelemektir. Araştırmaya %53,9'u kız, %46,1'i erkek olmak üzere toplam 254 ortaöğretim öğrencisi katılmıştır. Araştırmanın örneklemi, İzmir ili kapsamında tesadüfi örnekleme yöntemiyle seçilen bir Anadolu Lisesi ve bir Meslek Lisesi olmak üzere toplam iki lisenin 9., 10., 11. ve 12. sınıflarından rastgele seçilen ikişer şube ile oluşturulmuştur. Araştırma betimsel araştırma yöntemlerinden ilişkisel tarama modelinde gerçekleştirilmiştir. Araştırmada veri toplama aracı olarak kişisel bilgi formu, akademik içsel motivasyon ölçeği ve genel özyeterlilik ölçeği kullanılmıştır. Ortaöğretim öğrencilerinin akademik başarıları ile akademik içsel motivasyonları ve genel özyeterlilikleri arasındaki ilişkinin belirlenmesinde Pearson Momentler Çarpımı Korelasyon katsayısından yararlanılmıştır. Öğrencilerin, akademik içsel motivasyonları ve genel özyeterlilikleri alt faktörlerinin akademik başarılarındaki varyansın ne kadarını açıkladığını saptamak için ise çoklu doğrusal regresyon analizi kullanılmıştır. Araştırma sonuçlarından öğrencilerin akademik başarılarını yordayan kişisel faktörlerin önem sırasının başlama, başarısızlık korkusu, sosyal kabul, sürdürme çabası-ısrar ve başarı gereksinimi şeklinde olduğu ortaya çıkmıştır. Ayrıca tüm alt faktörlerin akademik başarı üzerindeki varyansın %56'sını açıkladığı bulunmuştur.
Kastamonu eğitim dergisi, Sep 15, 2015
Bu araştırma, alan öğretmen adaylarının seçimine ve atamalarına yönelik görüşlerinin incelenmesi ... more Bu araştırma, alan öğretmen adaylarının seçimine ve atamalarına yönelik görüşlerinin incelenmesi amacıyla yapılmıştır. Araştırmaya Ege Bölgesi'ndeki bir üniversitenin Eğitim Fakültesi'nin Ortaöğretim Fen ve Matematik Alanları Eğitimi Bölümü'nde öğrenim gören toplam 180 öğretmen adayı katılmıştır. Araştırmada betimsel araştırma yaklaşımı esas alınarak veri toplama yöntemlerinden biri olan açık uçlu soru tekniği uygulanmıştır. Veri toplama aracı olarak toplam 7 açık uçlu sorudan oluşan bir anket kullanılmıştır. Verilerin analizinde içerik analizi tekniği uygulanmıştır. Elde edilen bulgulardan bazıları öğretmen adaylarının alan öğretmenliği seçiminde uygulanan sınava bakış açılarının olumsuz yönde olduğunu, kaygı ve yetersizlik hissettiklerini göstermektedir. Ayrıca öğretmen adayları sadece bilişsel özelliklerin değerlendirildiği bir sınav sonucuna bağlı olarak yapılan öğretmen atamalarını yetersiz olarak değerlendirmişlerdir.
Irish Educational Studies, Jun 13, 2014
DergiPark (Istanbul University), Dec 1, 2011
In this research, an achievement test about global warming was administered to 193 selected stude... more In this research, an achievement test about global warming was administered to 193 selected students attending various high schools in Turkey. Their knowledge about global warming on theoretical, contemporary effects, and necessary precautions were measured. Using a self disclosure form, some characteristics of the students such as academic backgrounds of their parents, type of high school, and their economic status and whether the students had been involved in an activity on the subject before the examination were obtained. The data was analyzed by the statistical programs: Statistical Package for the Social Sciences (SPSS), Finesse, and then t test, Analysis of Variance (ANOVA), and correlation results were determined. The reliability (Cronbach's ) of the test was found to be 0.734. Considering the findings of the research, of three groups of question, the students were most knowledgeable about the effects of global warming.
Bartın üniversitesi eğitim fakültesi dergisi, 2017
Bu araştırmanın amacı, ortaöğretim öğrencilerinin akademik başarıları üzerine kişisel faktörlerde... more Bu araştırmanın amacı, ortaöğretim öğrencilerinin akademik başarıları üzerine kişisel faktörlerden akademik içsel motivasyon ve genel özyeterlilik faktörlerinin yordayıcı etkilerini incelemektir. Araştırmaya %53,9'u kız, %46,1'i erkek olmak üzere toplam 254 ortaöğretim öğrencisi katılmıştır. Araştırmanın örneklemi, İzmir ili kapsamında tesadüfi örnekleme yöntemiyle seçilen bir Anadolu Lisesi ve bir Meslek Lisesi olmak üzere toplam iki lisenin 9., 10., 11. ve 12. sınıflarından rastgele seçilen ikişer şube ile oluşturulmuştur. Araştırma betimsel araştırma yöntemlerinden ilişkisel tarama modelinde gerçekleştirilmiştir. Araştırmada veri toplama aracı olarak kişisel bilgi formu, akademik içsel motivasyon ölçeği ve genel özyeterlilik ölçeği kullanılmıştır. Ortaöğretim öğrencilerinin akademik başarıları ile akademik içsel motivasyonları ve genel özyeterlilikleri arasındaki ilişkinin belirlenmesinde Pearson Momentler Çarpımı Korelasyon katsayısından yararlanılmıştır. Öğrencilerin, akademik içsel motivasyonları ve genel özyeterlilikleri alt faktörlerinin akademik başarılarındaki varyansın ne kadarını açıkladığını saptamak için ise çoklu doğrusal regresyon analizi kullanılmıştır. Araştırma sonuçlarından öğrencilerin akademik başarılarını yordayan kişisel faktörlerin önem sırasının başlama, başarısızlık korkusu, sosyal kabul, sürdürme çabası-ısrar ve başarı gereksinimi şeklinde olduğu ortaya çıkmıştır. Ayrıca tüm alt faktörlerin akademik başarı üzerindeki varyansın %56'sını açıkladığı bulunmuştur.
Öğretim Teknolojisi ve Hayat Boyu Öğrenme Dergisi - Instructional Technology and Lifelong Learning
Bu araştırma, kimya öğretmeni adaylarının Web 2.0 araçlarını kullanma yeterliklerini ve bu araçla... more Bu araştırma, kimya öğretmeni adaylarının Web 2.0 araçlarını kullanma yeterliklerini ve bu araçlara ilişkin görüşlerini kimya öğretimi bağlamında araştırmayı amaçlamıştır. Betimleyici araştırma tasarımı kullanılmıştır. Katılımcılar, Türkiye'de bir devlet üniversitesinin Kimya Eğitimi Bölümü'nde öğrenim gören 27 öğretmen adayıdır. Veriler Web 2.0 Araçları Kullanım Yeterliliği Ölçeği ve Yapılandırılmış Görüşme Formu aracılığıyla toplanmıştır. Sonuçlar, adayların Web 2.0 araçlarını kullanma konusunda orta düzeyde yetkin olduğunu göstermiştir. Adayların çoğu bu araçları bu çalışma çerçevesinde ilk kez deneyimlemişlerdir ve önceden herhangi bir uzmanlığa sahip değillerdir. Görüşme sonuçları, adayların kimya kavramlarının soyut anlamlarından dolayı anlaşılmasının zor olduğunu ve herhangi bir konunun bir karikatür veya animasyon şeklinde Web 2.0 araçları kullanılarak görselleştirildiğinde daha başarılı bir şekilde öğretilebileceğini düşündüklerini göstermiştir. Araştırma sonuçları ...
Journal of Science Learning, 2022
The study aims to determine the subject matter knowledge of Prospective Primary School Teachers (... more The study aims to determine the subject matter knowledge of Prospective Primary School Teachers (PPSTs) and analyze their chemical representation levels on crystallization. The study was carried out with descriptive research with a qualitative approach based on this purpose. The study participants were eighty freshman students studying at the Department of Primary Education in a state university in the Aegean Region of Turkey. The data were collected using a worksheet containing seven open-ended questions regarding the crystallization experiment. The questions were about the solubility of salt in water, the formation of the salt water and its solubility-temperature graph, the formation of the saturated salt water, and the appearance of particles formed during crystallization. A worksheet was prepared to determine the chemical representation levels of the PPSTs, and the data were subjected to document analysis. The researchers conducted a demonstration experiment and an animated vide...
Journal of Baltic Science Education, 2014
In this research, the comprehension levels and misconceptions of university students on the subje... more In this research, the comprehension levels and misconceptions of university students on the subject of molecular geometry were determined via a two-tier diagnostic test consisting of 25 items developed by researchers. It was applied on 110 university students. The reliability and validity tests and item analyses were conducted in relation to the test, and the difficulty and discrimination indices of the items were detected. The reliability coefficient of the test was found to be 0.856 while the mean difficulty value of the test was 0.487. According to the findings obtained from the second tier of the test containing open end questions, the students had a great deal of wrong information and numerous misconceptions in relation to the molecular geometry. Such statements as “atoms move in the resonance structure” and “bond angles of two molecules having a trigonal pyramidal shape cannot be different” are counted among the most important misconceptions determined in the study. Key words:...
Chemistry Education Research and Practice, 2017
The current study examines the performance and achievement of students in the Systematic Qualitat... more The current study examines the performance and achievement of students in the Systematic Qualitative Analyses of Cations (SQACs). We sought answers to questions such as, ‘What are the students’ levels of performance?’ and ‘What is the relation between the average scores for performance and achievement?’. This was done by using the I diagram as a tool within a Guided Inquiry Learning Approach (GILA), which is based on the constructivist theory. The sample consisted of sophomore students (N = 31) taking the Analytical Chemistry Laboratory-I course and attending the Chemistry Teaching Program of the Faculty of Education of a state university in the Aegean region of Turkey. During the analyses, the students attempted to solve specific problems and find the results of their qualitative analyses as they followed the sections of I diagram step by step under the guidance of researchers. They also tried to find solutions to problems through logical reasoning and discussions with each other. ...
International Journal of Higher Education, 2016
Journal of Education in Science, Environment and Health
It is aimed to analyze the change of the pre-service science teachers‘ attitudes towards chemistr... more It is aimed to analyze the change of the pre-service science teachers‘ attitudes towards chemistry laboratories using case-based learning, an active learning method, in this research. This research is an semiexperimental study with a control group. The sample of this research was originated by the second-year students (N=61) of the department of science education in Dokuz Eylul University, Faculty of Buca Education. In the first stage of the research, a case about the experiment of determining the ionization constant of weak acid (Ka) was created and the case was discussed among the student groups in the experimental group as a workshop. In the second stage, the experiment was performed in the laboratory. And in the control group, the experiment was performed using conventional teaching methods. In conclusion, the effectiveness of case-based learning method in the attitudes of students towards chemistry laboratories was analyzed
Journal of Baltic Science Education
This research aimed to reveal the opinions of the university students who conducted original educ... more This research aimed to reveal the opinions of the university students who conducted original educational videos context for the experiments in the Biochemistry laboratory course. Participants were fourth year students (N=40) of the Mathematics and Science Education Department, in Chemistry Education Program. A case study was used and carried out during the Spring term of 2014 at the Faculty of Education of Dokuz Eylul University in Izmir, Turkey. The students designed and took participation in educational short videos. Besides, each group students prepared poster presentations of their video at the end of the 14-week implementation process. To collect data, semi-structured interviews were used. The interview results of the research showed that learning was more meaningful and valid through this laboratory course because the students attended the course with interest and favor and motivated positively. Eventually, the educational short videos can be a powerful convincing learning too...