In this article, we state an interesting geometric conservation property between the three angle bisectors of three similar right triangles and provide a proof without words for its justification. A GeoGebra applet is also presented to help with the understanding of the progression of the proof from inductive to deductive stage.

The aim of this study was to determine how 5-year-old children identified the functional relationship of correspondence, and whether or not they generalized when working on a task that involved programmable robots. We conducted this study with 15 children (9 girls and 6 boys) in their last year of preschool education. The study was designed around…

How do task experiences support proximal and longer-term desires to reengage? Central to this question is the interplay between perceptions of task difficulty and the situational interest. This interplay is increasingly researched but not yet well understood. Micro-analytic, latent studies are important tools for replicating past findings and…

Although numbers are universal, there are great differences between languages and cultures in terms of how they are represented. Numerical notation can influence number processing. Two well-known types of notational systems are sign-value, such as the Roman numeral system, and place-value systems, such as the Indo-Arabic numeral system. What is…

The hanging rope problem is considered. The rope is subject to rotation with the rotation axis being parallel to the rope. Using a continuum model and the basic principles of dynamics, the differential equation governing the motion is derived. The dynamic equilibrium case without vibrational motion is assumed in deriving the equation. The equation…

Scholars paid attention to the relationship between homework frequency and academic performance, however, fewer of them noticed that the relationship might be nonlinear and may vary across different types of homework. This study aims at exploring the nonlinear relationship between the different types of homework frequency and mathematical academic…

Noticing is a momentary act. Enriching the possibility of noticing something specific in the future marks the beginning of an action labelled "professional development". Thus, what happens as a result of noticing is what matters for the teacher, but what really matters is what happens for the learner. Whether something noticed enables a…

A solid foundation in math is important for children's long-term academic success. Many factors influence children's math learning--including the math content students are taught in school, the quality of their instruction, and the math attitudes of students' teachers. Using a large and diverse sample of first-grade students (n = 551), we…

Math anxiety levels directly and negatively impact student performance in the math classroom. Educators must work to implement instructional strategies that effectively reduce math anxiety and improve student math performance. This study evaluated mastery learning interventions as an effective tool for reducing math anxiety among middle school…

Teaching resources and professional development based on mathematics education research have the potential to support teachers to develop and sustain improved pedagogies. The Queensland Department of Education provided online professional learning modules for teachers of Prep (Foundation) to Year 10 mathematics. To support implementation of the…

This study explores the dynamics of accountability and responsibility among mathematics educators as they integrate Social and Emotional Learning (SEL) into their teaching practices. Utilizing a hermeneutic transcendental approach, the research examines the lived experiences of teachers, their challenges, and the strategies they employ to balance…

Leading primary school mathematics involves stimulating teacher learning for the purpose of improving students' mathematical outcomes. Currently there are staff shortages and school mathematics leadership may have changed. The results of a semi-structured interview with an experienced School Mathematics Leader who reflected on her work are…

Mathematical modelling is emphasised in curricula worldwide. Since 2006, mathematical modelling has been considered a fundamental process in the mathematics subject in Norwegian upper secondary schools. This study aimed to identify tensions in the approaches to mathematical modelling expressed in teacher interviews (N = 4) and framework discourses…

Research suggests that math anxiety correlates directly with individuals' views of mathematics-related experiences. Research also suggests that math anxiety may begin in early elementary grades and remain into adulthood. This study examined how teachers' experiences, perceptions, and mathematics confidence levels influence mathematics instruction.…

Teaching and learning of foundational math have emerged as concerns in India, and might be connected with the problems of large classroom sizes and inappropriate curriculum resources. To address these problems of practice, ABC School explored the use of blended learning in three Grade 2 mathematics classrooms (n = 108), while a control group of…