It is seen that there are few studies on the role of the knowledgeable other when the literature on Lesson Study [LS] is examined. However, for LS to be better understood and applied in different cultures, the role of the knowledgeable other in LS process should be clarified. This study aimed to determine the role of the researcher as the…

In this study, the design, implementation and evaluation processes of the 4MAT teaching model activity, which is designed in accordance with the holistic brain model for teaching the graphic representation of data at the 8th grade level and making the appropriate transformations between these representations, are presented in this study. The…

The aim of this study is to investigate the effect of teaching integers by lesson study model on students' success and attitudes in mathematics. The research uses quantitative technique, "quasi-experimental design" with pre-test post-test control groups. The participants of the study are 62 sixth grade students and 4 teachers in three…

In light of technological development worldwide, the focus has been on how different types of digital technology can be used to provide activities that will enhance students' mathematical learning. Micro-learning is an innovative approach that will accelerate digitalization in mathematics teaching, attract students to mathematics, and combine…

Effective education depends on various factors, with textbooks and courses being essential for preparing students for real life situations. Therefore, it's crucial that textbooks are thoughtfully developed and chosen. This study investigates how middle school mathematics textbooks approved by the Ministry of National Education for the 2021-2022…

This research aims to investigate the effect of instruction supported by mathematical internet memes on 8th-grade students' mathematics anxiety and motivation. The research consisted of a pre-test post-test quasi-experimental design conducted for two weeks. The research sample consists of 8th-grade students who study in a state school in Turkey.…

The purpose of this study is to determine the opinions and self-efficacy beliefs of middle school students towards mathematical connections before and after the process in a learning environment prepared in the context of connections with different disciplines and including modeling tasks. An embedded experimental mixed method design was used in…

The objective of the present study was to gain a deeper understanding of how middle-grade mathematics teachers implement questions in both technology-supported and non-technology-supported classrooms. The investigation demonstrated that in-service mathematics teachers teaching in a technology-supported classroom and in a non-technology-supported…

This research examined how pre-service mathematics teachers (PMTs) plan to support argumentation in their lessons about the hierarchical relationships among the quadrilaterals and what they notice during planning. The participants of this case study were eight pre-service middle-school mathematics teachers. Data consisted of the PMTs'…

This study explored four middle-school mathematics teachers' provision of non-examples and instructional explanations in teaching rational numbers to seventh-grade students. The data sources were 8 lesson hours of observations conducted in four different classrooms. Yin's [(2018). "Case study research and applications: Design and…

The aim of this study is to determine the effects of the values-based mathematics teaching activities on mathematics achievement and mathematics attitudes of 8th grade students in Türkiye. For the study, a control group pretest-posttest quasi-experimental design was used. A total of 59 students (experimental group 29; control group 30) from a…

The development of proportional reasoning is crucial for higher-level mathematical skills. Various studies have demonstrated that the numerical structures of problems have an impact on the strategies used to solve direct proportional problems. This research was conducted to determine eighth grade students' strategies for solving inverse…

The aim of this study is to examine 8th grade students' Van Hiele geometry thinking levels, proof writing and justification skills. The research was carried out with sixteen eighth grade students of a private school in Sivas. Participants were selected based on an easily accessible sample. The data were collected from the students who participated…

Preservice middle school mathematics teachers' (PMTs) beliefs about a mathematics teacher and mathematics teaching were investigated through the metaphors they generated. Third- and fourth-year PMTs (N = 249) at four universities in Türkiye participated in two anonymous metaphor tasks for a mathematics teacher and mathematics teaching. PMTs'…

The present study aimed to test the effect of the problem-posing instruction experimentally based on the extended active learning framework on the development of Turkish middle school sixth-grade students' (N = 19) problem-posing and -solving skills with whole-number operations. The training programme was completed in 13 lessons over a seven-week…