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Sari, Mehmet Hayri; Szczygiel, Monika – Psychology in the Schools, 2023
Although interest in mathematics anxiety in young children (6-11 years) has increased recently, the results of previous studies on the role of mathematics anxiety in the relationship between number sense and math performance are inconsistent. The study's main objective was to establish whether math anxiety is a mediator or a moderator in the…
Descriptors: Mathematics Anxiety, Number Systems, Mathematics Achievement, Number Concepts
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Sari, Mehmet Hayri; Herzog, Moritz; Olkun, Sinan; Fritz, Annemarie – International Electronic Journal of Mathematics Education, 2021
Research has shown that a profound place value understanding is crucial for success in learning mathematics. At the same time, a substantial number of students struggles with developing a sustainable place value understanding. In this regard, two aspects of the place value system appear especially relevant: First, the knowledge of the decimal…
Descriptors: Foreign Countries, Mathematics Instruction, Grade 2, Grade 3
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Sari, Mehmet Hayri; Tertemiz, Nese Isik; Demirci, Niymet – International Journal of Progressive Education, 2021
This study aims to reveal fifth grade students' achievement levels in the angles sublearning area and to examine their errors in the subject of angles. The study was designed as a survey, and the study group included a total of 254 fifth grade students attending school in central Nevsehir and in Askale, Erzurum. Data were collected via the…
Descriptors: Grade 5, Elementary School Students, Children, Mathematics Achievement
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Sari, Mehmet Hayri; Saralar Aras, Ipek – International Journal of Psychology and Educational Studies, 2022
Research shows that teachers are one of the most influential factors in student learning in online classrooms during the COVID-19 pandemic and discusses teachers' efforts to get the most out of their online classrooms with their students. However, how the teachers experience online teaching is understudied. To address this concern, this case study…
Descriptors: Case Studies, Web Based Instruction, COVID-19, Pandemics
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Sari, Mehmet Hayri; Yüce, Erkan – Journal on Efficiency and Responsibility in Education and Science, 2020
This study aimed at revealing the problems experienced by primary school teachers in classroom contexts which involve different cultures (Turkish, Iranian, Afghan, and Syrian). Phenomenology design was adopted in the study. The study group was defined through criterion sampling approach. Teachers serving at classrooms involving different cultures…
Descriptors: Cultural Differences, Student Diversity, Elementary School Students, Elementary School Teachers
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Sari, Mehmet Hayri; Aydogdu, Seyhmus – International Journal of Curriculum and Instruction, 2020
The purpose of this study is to examine the effects of concrete and technology-assisted learning tools on developing the conception of place value, mathematical achievement and arithmetical performance of primary school 4th graders. The study group was comprised of three different primary schools. There were no group differences prior to…
Descriptors: Mathematics Instruction, Teaching Methods, Mathematical Concepts, Concept Formation
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Sari, Mehmet Hayri; Olkun, Sinan – International Online Journal of Primary Education, 2020
Learning or doing mathematics involves approximate quantification. The purpose of this research was to improve approximate number system acuity in primary school students with low achievement in mathematics. A quasi-experimental, pre-test, post-test design with a control group was utilized. Mathematics Achievement Test (MAT), Arithmetic…
Descriptors: Mathematics Instruction, Learning Disabilities, At Risk Students, Elementary School Students
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Dag, Nilgün; Sari, Mehmet Hayri – International Electronic Journal of Elementary Education, 2017
This research on mentoring phenomenon aims at putting forth the areas of mentoring need for the novice and preservice teachers. This study exhibits a pattern consisting of qualitative research model and takes as a basis the case study approach. Criteria sampling technique was used in the research due to reasons peculiar to the research. The…
Descriptors: Mentors, Preservice Teachers, Beginning Teachers, Qualitative Research