This paper examines Grade 10 students' conceptions of proof in a secondary school in Singapore. Using a purposive survey of 9 mathematical items, proofs by 8 students for two items, one on Number and Algebra and another on Geometry and Trigonometry, were coded using Harel's proof schemes. The findings show that the students' proofs for the two…

Background/purpose: This study aimed to investigate the differences among the equations used in estimating the reliability coefficient using the half-split method. These equations demonstrate Spearman-Brown's, Rulon's, Guttman's, Mosier's, Flanagan's, and Horst's. Materials/methods: The study instrument was a 43-item scale for evaluating the…

The current study aimed to create and validate a digital literacy assessment tool's quality for students in Grades 10-12 within the Thai educational context, and 2) to develop T-score norms derived from the results of the digital literacy assessment tool for students in Grades 10-12 in this context. The study followed a research and development…

The role of virus is an essential material that is not discussed completely in the lesson because of the limited information presented in the reference book. The role of viruses is important to learn because it can increase knowledge and know the role of viruses in life. This research aims to (1) develop interactive learning media based on…

Background/purpose: The purposes of this study were 1) to examine the effectiveness of concept mapping on Grade 10 students' literary analysis skills, 2) to study the participants' satisfaction with concept mapping in learning literary analysis skills, and 3) to establish the construct validity of the learning management plan through confirmatory…

Cosmology concepts encompass complex spatial and temporal relations that are counterintuitive. Cosmology findings, because of their intrinsic interest, are often reported in the public domain with enthusiasm, and students come to cosmology with a range of conceptions some aligned and some at variance with the current science. This makes cosmology…

Constructing mathematical proofs is a fundamental yet challenging skill in secondary school geometry. While technology has been used to scaffold different aspects of the proving process, existing approaches often separate inquiry and conjecturing from formal proof or focus on structural and technical assistance without addressing students' initial…

The aim of the study was to explore same-sex and opposite-sex friendship functions among 12 to 13- and 16 to 17-year-old Hungarian adolescents (n = 304). To explore perceptions of friendship functions, the McGill Friendship Questionnaire (MFQ, 30 items, 6 factors: stimulating companionship, help, intimacy, reliable alliance, self-validation,…

This study investigates the interplay between student reasoning and instructional strategies in trigonometry education. A qualitative case study was conducted to examine how Grade 10 students employ various reasoning approaches -- deductive, inductive, abductive, analogical, and algorithmic -- when solving trigonometry problems. Each approach…

Enhancing students' conceptual understanding is one of the primary goals of science education. Existing literature suggests that the degree of knowledge integration among students can reflect their level of conceptual understanding. This study focuses on the concept of friction force, constructing a cognitive structure model of friction force to…

The education field favors innovations, but innovative schools tend to fade after an initial 'golden age.' According to the new institutional theory, this happens due to the innovative school's need to achieve institutional legitimacy, which encounters several difficulties. This study aims to explore the journey to attaining legitimacy in one…

The purpose of this study is to research the validity and reliability of the Turkish version of Designing my Future Scale developed by Di Maggio et al (2017) for the adolescents. Study had been carried out with 360 students in total who randomly selected from grades 9 and 10 from Namik Kemal High School, Bekir pasa High School and Erenköy High…

This study investigated the effect of situated learning environment in enhancing mathematical reasoning and proof among tenth grade students. To achieve the aim of the study, a pre-posttest of mathematical reasoning and proof was used, and its validity and reliability were verified. The sample of the study consisted of 50 female students who were…

This paper highlights the pedagogical importance of gaps in mathematical proofs to foster students' learning of proofs. We use the notion of 'gap-filling' (Perry & Sternberg, 1986) from literary theory to analyze a task based on a Proof Without Words, which epitomizes the notion of gaps. We demonstrate how students fill in gaps in this…

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…