The purpose of this note is to discuss how paper folding can be used to find the exact trigonometric ratios of the following four angles: 22.5°, 67.5°, 27°, and 63°.

Developmental dyscalculia (DD) is a specific mathematical learning disability, with a prevalence of around 3%-7% in the school-aged population. It negatively affects individuals, and even the national, development. Previous DD-intervention programs usually targeted on numerosity, number, simple arithmetic, or even general cognitive ability. The…

Research exists on mathematical interventions to support elementary students experiencing mathematical difficulties, yet little examines the provision of such interventions within an online learning environment. This study explored the online delivery of the virtual-representational-abstract (VRA) instructional sequence, taught via explicit…

Educational games can be used as an effective means of transferring knowledge in a fun way to complement education and training. The aim of the study was to develop a game and get students' opinions on the game that can be played in Organic Chemistry courses in order to teach the names of commonly used organic compounds with cyclic and aromatic…

There is a large volume of published studies describing the positive role of Augmented Reality (AR) in educational settings. However, there is a paucity of empirical work that explores its role in supporting primary school pupil's motivation and creativity. Moreover, numerous studies have confirmed that pupils have difficulties in learning…

Fraction knowledge has been found to predict later mathematical performance, but many students have difficulty with fractions. Virtual manipulatives (VM) and concrete manipulatives (CM) are effective approaches to teaching fractions, but previous research has not been able to reach a consensus on which manipulatives are the most effective. This…

This study compares the effect of Augmented Reality (AR) based virtual manipulatives to physical manipulatives for teaching geometric shapes to preschool children to improve their spatial skills. A quasi-experimental research design was utilized in order to answer the research questions. The context of the research was a public primary school in…

Earlier "Discovery" articles (de Mestre, 1999, 2003, 2006, 2010, 2011) considered patterns from many mathematical situations. This article presents a group of patterns used in 19th century mathematical textbooks. In the days of earlier warfare, cannon balls were stacked in various arrangements depending on the shape of the pile base…

Research has shown that adults can engage in cognitive offloading, whereby internal processes are offloaded onto the environment to help task performance. Here, we investigate an application of this approach with children, in particular children with poor working memory. Participants were required to remember and recall sequences of colors by…

An experiment which investigates the wettability of natural surfaces was developed for undergraduate students, which allows them to explore concepts of surface structure, wettability, superhydrophobic surfaces, and self-cleaning. The students choose their own samples of leaves and flowers present in their local environment, examine their surface…

Spatial visualisation is an essential component of geometric thinking and measurement sense. It is a particular type of spatial skill that involves manipulation of spatial images and may not be naturally occurring for students. However, research shows that it is malleable and can be developed through instruction. This article presents an…

Teaching the periodic table is a central part of chemistry. This might involve memorizing the symbols of the elements, learning about the properties of the families, or understanding its general organization. This year, The International Year of the Periodic Table, marks its 150th anniversary, and represents a good opportunity to highlight its…

Play provides a foundation for human learning because people have an opportunity to experiment through play and learn in a safe environment. Although play is more free-form, expressive, and improvisational, serious play is more structured, rule-bound with a "serious" purpose (Deterding, Dixon, Khaled, & Nacke, 2011). Studies also…

This study investigated preservice teachers' levels of mathematics anxiety before and after a mathematics methods course. Changes were measured using manipulatives and other activities to make mathematics concepts more concrete and meaningful. Both quantitative and qualitative measures were utilized. Informal discussions, informal interviews, and…

The research reported on here was designed in a qualitative approach to present the opinions of pre-service pre-school teachers on the use of mathematics activities. The sample consisted of 10 pre-service teachers, who in their fourth year of pre-school education in the teaching department in 2017 to 2018. The pre-service teachers in the study…