Gürsel Güler

• Bozok University

The aim of this study is to examine the difficulties prospective mathematics teachers experience in mathematical proving, the courses in which they have difficulties in proving, the importance of proof in mathematics education and its functions in their professional lives. The data of the study was collected via semi-structured interviews with fift...

This study was conducted to examine the effectiveness of proof tasks in the transition from conjecture to proof in Euclidean geometry on freshmen’s proof schemes. In line with this aim, the proof schemes of the freshmen who performed conjecture-proof and theorem-proof tasks were compared. The freshmen were composed of 109 pre-service middle school...

In this study, it was aimed to investigate 4-to-6-year-old children's reasoning skills appearing in pattern tasks. 55 children studying in the classes of four different pre-school classes participated in the study. A classroom teaching experiment was conducted to examine the development of children's reasoning skills in pattern tasks. Both qualitat...

This study investigated the effectiveness of inquiry-based learning (IBL) approach in ratio and proportion on the mathematics reasoning skill of seventh-grade students. The study was carried out in a seventh-grade mathematics course in a middle school located in the Central Anatolia region of Turkey during the 2016-2017 academic year. The IBL conte...

This study aims to investigate the similarities and differences between prospective mathematics teachers’ creative thinking skills in paper-pencil test and on a Geogebrasupported environment in terms of problem-posing. This case study used purposive sampling method for determining the participants. Findings revealed that the activities carried out...

Modeling activities enriched with 3D printers are effective in providing teachers with the skills they should have and in using the technology in mathematics education. In this regard, in the present study, ten-week modeling activities were carried out with 3D printers that are widely used in different fields along with educational environments and...

This study examines the effects of the fluency, flexibility, and originality components of creativity, as reflected in problem-posing, on the problem-solving abilities of prospective teachers. A problem-posing task regarding pattern subject and a problem-solving test were administered to prospective teachers, 12 of whom provided further data throug...

This study aims to investigate the non-algebraic solution strategies that prospective mathematics teachers use to solve word problems and their thought process while they were solving the problems. A total of 76 prospective mathematics teachers were asked to solve two word problems without using algebraic solutions and, then, clinical interviews we...

This study analyzed the methods used to teach the multiplication of fractions in Turkish and American textbooks. Two Turkish textbooks and two American textbooks, Everyday Mathematics (EM) and Connected Mathematics 3 (CM), were analyzed. The analyses focused on the content and the nature of the mathematical problems presented in the textbooks. The...

The objective of this study was to examine mathematics teachers’ conceptual understanding of irrational numbers. Data were gathered from semi-structured interviews with eight primary school mathematics teachers in Central Anatolia, Turkey. The interviews carried on with the teachers lasted about 45 minutes. To be able to record the interviews, perm...

The study was conducted to reveal the effects of the instruction of different problem-solving strategies on the proportional reasoning skills of students in solving proportional problems in the 6th grade math’s class. Quasi-experimental research model with pretest-posttest control group was employed in the study. For eight class hours, the experime...

The aim of this study was to research the prospective mathematics teachers’ ability to construct a mathematical model for a real life problem and to prove these models by generalizing them to use in similar situations. The study was conducted with 129 prospective teachers determined on a volunteering basis. The data were obtained with the help of M...

This study aims to look into secondary education prospective mathematics teachers’ model creation skills regarding proof of the rule providing the sum of successive odd numbers. The study takes case study method, a qualitative research approach, as the basis to reflect the current situation, and focus group discussions were held in classroom enviro...

The aim of this study is to examine current proof making skills of secondary school seventh graders using proof schemes. Data of the study were collected in two phases. Initially, Proof Schemes Test, which was developed by the researchers, was administrated to 250 seventh grade students from eight secondary schools, which were chosen randomly. The...

The aim of this study was to examine prospective mathematics teachers’ proof processes for algebraic concepts. The study was conducted with 10 prospective teachers who were studying at the department of secondary mathematics teaching and who volunteered to participate in the study. The data were obtained via task-based clinical interviews that were...

The aim of this research is to find out prospective mathematics teachers' conceptions regarding mathematical proof. To this aim, the researchers developed a 5-point Likert Conception Scale for Mathematical Proof (CSFMP) composed of 31 items. The scale was administered to a total of 480 prospective teachers who were studying at the department of ele...

Bu çalışmada, ilköğretim matematik öğretmeni adaylarının yedinci sınıf öğrencilerinin tamsayılı kesir ile basit kesrin toplamına yönelik kurdukları problemlerdeki hataları belirleyebilme becerileri araştırılmıştır. Çalışma yedinci sınıfta okuyan 210 öğrenci ve 61 matematik öğretmeni adayı ile yürütülmüştür. Adaylardan, yedinci sınıf öğrencilerinin...

Bu çalışmada, orta öğretim matematik öğretmeni adaylarının matematik kavramına ilişkin metaforik düşüncelerini ortaya çıkarmak amaçlanmıştır. Bunun için öğretmen adaylarından “Matematik... gibidir, çünkü ...” cümlesini tamamlamaları istenmiştir. Araştırmanın çalışma grubunu, 140 orta öğretim matematik öğretmeni adayı oluşturmaktadır. Katılımcı ceva...

In recent years, metaphors became the subject and center of the increasing interests in educational sciences, including the mathematics education. According to this interest, pre-service mathematics teachers’ views about their own professional area are important to reveal. In this study, the purpose is to determine metaphorical thoughts of pre-serv...

This study tried to investigate the prospective mathematics teachers’ abilities to construct relations between the symbolic and visual representations of series with complex terms. The sample was composed of 80 prospective mathematics teachers who were in their last grade of their undergraduate degree. There were two parallel tests to conduct this...

Although the proof is one of the basic concepts in mathematics, students have difficulty to use mathematical proof in advanced mathematical courses. Even students who take a number of university level advanced mathematics courses are not able to grasp the mathematical proof. Accordingly, the purpose of this study is to investigate what pre-service...