Students encounter difficulties in solving areas of triangles and quadrilaterals due to a lack of conceptual understanding of the topic. The researchers have developed the following activities and the hypothetical learning trajectory (HLT) through the design research approach focusing on developing activities for students to learn the concepts…

Educational online games and educational videos are classroom methods that incorporate multimedia into language teaching. Previous studies have suggested that the use of online games and educational videos in language learning enhances student performance. However, no studies have been done using three different groups to examine whether online…

Algebraic Thinking Skills (ATS) are one of the skills that students need to master in order to solve nonroutine problems. These skills are also necessary as a foundation for students preparing to enter university studies and fields of work that require logical and analytical thinking. However, Malaysian students' performance in solving algebraic…

In both private and public education, several institutions may use game-based explanations. However, it does not rule out the possibility that most educational institutions use text-based explanations, which makes students tend to get bored because they only have to read and listen, so another alternative is needed: game-based explanations that…

The aim of the research is to describe the profile of problem solving ability of secondary student with high mathematical ability in learning based on realistic mathematics supported by ethnomathematics. The study is a descriptive qualitative research. The subject is a 7th grade student in a public secondary school at Semarang regency, Central…

The essential purpose of developing PISA-like questions is to train students' reasoning abilities so that students' ability to solve PISA-like questions increases. Therefore, this research aims to produce PISA-like math problems in the context of historical buildings in the Karawang Regency that are valid, practical, and potentially affect…

This study was conducted to determine whether there were significant differences between students' reasoning abilities taught using the PBL model and with the Computer Multimedia Assisted GI, and to determine whether or not there was an influence of interaction between learning models and students' initial abilities on mathematical reasoning…

In Indonesian secondary schools, young learners might have some difficulties such as lack of motivation, lack of confidence and disengagement in learning English, which contribute to the level of their social-emotional competencies (SEC). This study was conducted to investigate the relations between 103 seventh graders' SEC and their English…

This research aimed to examine the effectiveness of the INSTAD strategy in comparison to other teaching strategies such as Inquiry, student team's achievement division (STAD), and lecture method, to reduce the gap of higher order thinking skills between Upper Academic (UA) and Lower Academic (LA) groups of students. The research participants were…

This study revealed how students' understanding of negative numbers and identified their difficulties related with the concept of integer and its counting operation as part of identifying epistemological obstacles about negative numbers. Even though teachers have explained counting operation procedure of integer, but there was concept…

This paper attempted to make explicit some of the underlying characteristics of spatial visualisation using the concept of area of composite shapes. By engaging students with metric-free tasks, we identify the type of perceptual and visual/spatial manoeuvres that they deploy in such situations. Interview data collected from three students in Grade…

This study investigated the impact of the problem-solving model on students' concept mastery and motivation in learning heat based on gender. The method which was used in this research was quasi-experiment with pretest-posttest design in girls and boys class. Data are collected from girl class (N=16) and boys class (N=16) of a 7th grade in one of…