Investigation of middle school students' measurement estimation abilities in terms of different variables

The purpose of the research is to examine the relationship between 7 th grade students' estimation skills in length and area measurement, and their number sense and spatial abilities. Since the study aims to investigate the relationship between different skills, a correlational model has been chosen for the research. In the study, seventh-grade students' number sense and spatial abilities were measured to determine whether these variables are related to estimation skills in length and area measurement. The research sample consists of 7 th students who are enrolled in middle schools in the province of Izmir in the 2022-2023 academic year. Data were collected through a spatial ability (Göktepe Yıldız, 2019) and number sense test (Kayhan Altay, 2010) developed by researchers in the field, as well as an measurement estimation test developed by the researcher. As a result of the study, students' estimation skills were found to be at a moderate level, with estimation skills in length measurement being at a moderate level and estimation skills in area measurement being at a slightly lower level. It was determined that the measurement estimation skill was not affected by gender. There was a modarate level of relationship between students' estimation skills and number sense, while a moderate level of relationship was found between measurement estimation and spatial ability.