The main aim of this study is to develop a useful, valid, and reliable two-tier proportional reasoning skill test for middle school 7th and 8th-grade students. The research was carried out using the sequential explanatory mixed method. The study group of this research comprised of 391 (n[subscript 7th-grade]=223, n[subscript 8th-grade]=168)…

This study aims to design mathematical literacy instruments that have evidence of content and construct validity and are reliable for use as an assessment for learning. The research involved eight experts as instrument validators and 273 eighth-grade students of junior high school in Yogyakarta Province. The results showed that the ten…

Science process skills are an important part of scientific inquiry that need to be monitored so that pupils can improve their skills to do science. Although there are several science process skills tests mentioned in the literature, we decided to develop an online one in order to improve the usefulness of the test and enable autoscoring to reduce…

The aim of this study is to develop a valid and reliable astronomy attitude scale for secondary school students. The method of this research is a scale development study. The study group of the research consists of 300 students studying in 3 different secondary schools in Turkey in the first semester of the 2022-2023 academic year. A 32-item…

This study aims to develop a valid and reliable achievement test to measure the achievement of eighth-grade students in the "Seasons and Climate" unit of the science course. The research was carried out using a survey model. The study group consists of 298 eighth-grade students studying in various cities in Turkey in the 2020-2021…

In this study, the aim was to develop a measurement tool that would provide a valid and reliable assessment of secondary school students' mathematical resilience skills. The research was conducted with a sample of 229 students. To ensure the content and face validity of the scale, expert opinions were initially sought, and the scale was revised…

Understanding motivational beliefs such as expectancy and value that shape students' persistence and decision to pursue a STEM career, obtaining valid and reliable measures for these dimensions, and developing strategies using this data are critically important to ensure students' persistence in the STEM pipeline. Therefore, this study aims to…

The research aims to develop a valid and reliable scale to determine secondary school students' perceptions of role modeling. The survey design model, which is a quantitative research method, was used in the research. The study's sample comprised 500 students enrolled in three secondary schools in Turkey during the 2018 spring semester. Data for…

This study sought to develop a valid and reliable measurement tool that measures the perceptions of behavioral dispositions in determining the high school preferences of 8th grade students. The study population consisted of 26,906 eight graders in public and private secondary schools located in the city centres of Aydin and Denizli, Turkey. The…

Students' science identity has been identified as an important construct that positively influences their learning engagement, persistence, and career intentions in science. This paper reported the process of developing and validating an instrument that can be used to assess high school students' science identity. The development of this…

A prior study developed the Computational Thinking Scale (CTS) for assessing individuals' computational thinking dispositions in five dimensions: decomposition, abstraction, algorithmic thinking, evaluation, and generalization. This study proposed the Developmental Model of Computational Thinking through validating the structural relationships…

The aim of this research is to adapt the scales "Homework Management, Homework Effort, Teacher Homework Involvement, Teacher Feedback and Parental Homework Support" into Turkish. The research data were collected from 1,698 secondary school students in grades 5 to 8. The sample was divided into four subgroups and explanatory factor…

In this study, it was aimed to develop a measurement tool that measures the level of importance and value that secondary school students attach to social justice. Accordingly, 352 participants, consisting of eighth-grade students, received a draft scale consisting of 47 items and a personal information form. The data obtained were checked for…

School climate measures are important tools that assist educators in evaluating the "norms, values, and expectations that support people feeling socially, emotionally and physically safe" (National School Climate Council, 2007, p. 4). Positive school climate is associated with academic performance indicators such as grade point average,…

One of the major purposes of this study is to investigate the potential impact of gender and information and computer technology (ICT) resources on students' computational thinking (CT) competencies. To this end, the Computational Thinking Test for Junior High Students (CTT-JH) was developed and validated. Research participants included 437 junior…