Mathematics education in the Dayak Ngaju, Central Kalimantan community played an essential part in its inherent culture, including batik/carving/painting motifs. The moral messages embedded in these motifs serve as the philosophy of life for the Dayak Ngaju community. This study aimed to describe influence of implementing an ethnomathematics…

The problem in studying geometry for students with normal hearing and hearing impairment is that when studying geometry, it does not only require analytical presentations but also visual presentations related to spatial visualization abilities. This problem is getting worse during the pandemic, in which teaching and learning had to be done online.…

The aims of this study are: (1) to investigate the level students' critical thinking skill on living things and environmental sustainability theme, (2) to examine the critical thinking difference among gender, learning styles, and students' motivation, and (3) to investigate the correlation between students' critical thinking and students'…

A learning trajectory as a sequence of mathematical activities that could facilitate the growth of students' understanding of learning goals. This research aimed to produce an instructional sequence to learn the concepts of translation and reflection and to investigate how students develop their understanding informally using a South Sumatra dance…

This study aims to test the effectiveness of a socio-scientific issue (SSI) based instruction through STEM-6E (engage, explore, explain, engineer, enrich, and evaluate). Controversial science topics (e.g. genetically modified organisms) in many countries, especially Indonesia, can be approached via integrated STEM education. One hundred and nine…

Creative thinking skills are crucial to current generations dealing with 21st-century challenges. However, studies on higher-order thinking skills remain limited. CTS can be easily empowered if students have good metacognitive abilities. This study analysed the effect of STEM-based online learning lesson plans on the CTS of students and…

This study aims to determine students learning obstacles in probability material based on their probabilistic thinking (PT) level using the theory of didactical situation (TDS) perspective. This is qualitative research with the case study method. The subject consisted of 23 grade 9 students in junior high school who had studied the material and…

The Association for the Advancement of Computing in Education (AACE) is an international, non-profit educational organization. The Association's purpose is to advance the knowledge, theory, and quality of teaching and learning at all levels with information technology. The "EdMedia + Innovate Learning" conference took place in New York,…

The relationship between spatial conceptions and students' spatial abilities is still rarely studied specifically, even though this is the basis for students to think in learning geometry. This paper aims to explore spatial abilities and the development of spatial ability theory, discusses the relationship between spatial conceptions in students'…

"Kue Putu" is a traditional Indonesian cake that is well-known to the students. Besides, the "Kue Putu" mold is made from cylinder-shaped bamboo culm and possesses the potency for learning geometry in a meaningful way. In addition, Indonesian Realistic Mathematics Education (IRME) is a mathematical learning strategy in which…

The hearing impairment can result in students having difficulty accepting learning. Obstacles Students in special schools when observing the understanding the numeracy skills. Students have problems sorting numbers and adding numbers from 1 to 10. Numeracy skills are an introductory lesson in learning mathematics. Several studies have shown that…

A good-quality teacher may determines a good-quality learning, thus good-quality students will be the results. In order to have a good-quality learning, a lot of strategies and methods can be adopted. The objective of this research is to improve students' ability in determining the rules of a numeric sequence and analysing the effectiveness of the…

This study aims to develop geometry learning media on curved-solid objects using Ispring Suite 8 with 3D effects supported by Google SketchUp. It also aims to find the effectiveness of the media towards the basic geometry skills and the learning result of 9th -grade students of junior high school. This study is a development study which refers to…

English across curriculum has been of world-wide practice, including in Indonesia. Through a blended curriculum (a synergy of national and international frameworks), some schools have put this program into action within the context of CLIL (Content-Language Integrated Learning). This correlational study is intended to find out the correlation…

This research aims to produce a Learning Trajectory Based Instruction (LTBI) that can help the ninth grade students understand the concept of congruence of the two-dimensional shape by examining Lawang Sewu as one of Central Java historical buildings. LTBI is defined as a teaching and learning trajectory that uses Hypothetical Learning Trajectory…