Background: Authentic situations are considered a source of learning due to their real world relevance. This can encourage learners to acquire new knowledge. Increasing digitisation and associated resources, such as professional development opportunities for teachers, technology tools, or digital equipment for schools enable the development and…

Mathematical justifications offer an approach to which students deepen and extend their mathematical thinking. This process has the potential to enhance students' conceptual understanding. Mathematical practices and process standards ask students to use critical thinking skills to justify their reasoning, but this is usually seen as proofs in high…

We present a case study of proving by three 12-13-year-old students with different levels of mathematical giftedness. After analysing students' proofs, we conclude that: there was a relation on the consistency and the students' levels of mathematically giftedness, being the least consistent the student not mathematically gifted and the most…

The aim of this study is to construct a STEM competencies assessment framework and provide validity evidence by empirically testing its structure. Common interdisciplinary assessment frameworks for STEM seem to be scarce in the literature. Many studies use students' mathematics or science scores obtained from large-scale assessments or exams to…

Climate change in coastal areas is a complex problem that involves value systems and requires various scientific disciplines. Integration of Science, Technology, Engineering and Mathematics (STEM) approach is needed in learning so that it can train students to think holistically, structured and systematically. This research was carried out with…

In this paper, Harel and Sowder's proof schemes of taxonomy were applied for identifying eighth grade students' learning of proof and proofing. This study aimed to examine what kind of proof schemes are used in geometry and measurement learning areas and student's skills in giving proof and their opinions about proof. Qualitative methods were…

This study focused on improving students' learning mathematical of proofs and proving by using combinations of proof strategies that span different levels of understanding of proof structure; we refer to these as 'level-spanning proof-production strategies'. We analysed the level-specific proof-production strategies evident in the lessons and…

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…

This study aims to produce a jumping task in the form of a student worksheet which is valid and practical. Design research in the form of development studies was chosen in this study which consist of preliminary stage and prototyping stage. Data were collected by walk through, test, questionnaire, and interview. Data were analyzed descriptively.…

This study aimed to develop a STEM module for eighth-grade middle school learners through the engineering design process. The module was developed based on the ADDIE model, primarily concentrating on the stages of analysis, design and development. The study consisted of two main phases: module development and module evaluation. During the…

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…

Given the increasing emphasis of communicative competence in English as a foreign language (EFL) contexts and the lack of validation research on speaking assessments for adolescent EFL learners, in the current study we examined the validity of the TOEFL Junior® speaking test, a relatively new speaking assessment developed by Educational Testing…

Compared to other content areas, there is a dearth of research examining curriculum-based measurement of writing (CBM-W). This study conducted a conceptual replication examining the reliability, stability, and sensitivity to growth of slopes produced from CBM-W. Eighty-nine (N = 89) eighth-grade students responded to one CBM-W probe weekly for 11…

Emotional availability of parents plays a crucial role in the psychological well-being and development of adolescents. However, previous studies have primarily focused on assessing maternal emotional availability. The Lum Emotional Availability of Parents (LEAP) scale was developed, considering both mothers' and fathers' emotional availability.…