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Heru Sukoco
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Faculty of Mathematics and Natural Sciences UNY (Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) Jl. Colombo No.1, Karang Malang, Caturtunggal, Depok, Sleman, Daerah Istimewa Yogyakarta 55281
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INDONESIA
Ethnomathematics Journal
Published by Universitas Negeri Yogyakarta
ISSN : 27989755     EISSN : 27763676     DOI : https://doi.org/10.21831/
Core Subject : Education, Art, Social,
Arts Education Mathematics Social Sciences Other
Ethnomathematics Journal is an open access - international journal that provides a forum for publishing research reports, theoretical review, ideas, or innovation of mathematics education including ethnomathematics referring to the works of DAmbroisio and the colleagues. This journal is designed and devoted to lectures, researchers, school teachers, teacher educators, as well as university students who want to publish their original works or thoughts. Besides regular writers, the journals will also invite contributors who are experts in mathematics education either from Indonesia or abroad.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 35 Documents
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Learning About Measurements from Videos of Keraton Kesepuhan Cirebon for Local Primary Students Siti Kholisoh; Dafid Slamet Setiana
Ethnomathematics Journal Vol 3, No 2 (2022): September
Publisher : Universitas negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ej.v3i2.46126

Abstract

Learning mathematics is sometimes monotonous and boring. For this reason, teachers are required to be able to create interesting and not boring learning media that can increase students' interest in learning mathematics. One of the learning media that can attract students' interest is making a video for learning mathematics to calculate distance units that are integrated with the local culture of the Kesepuhan Cirebon palace. With this learning video, it is hoped that students will be interested in participating in mathematics learning and getting to know the local culture, so that student learning achievements can increase. The research method used is the descriptive qualitative method. Data was collected using interview techniques, offline learning observations, and school documentation, data analysis was carried out using interactive analytical techniques consisting of three steps, namely data reduction, data presentation, and drawing conclusions. From the results of the study, it was found that the innovation of learning media videos to calculate distance units that were integrated with the local culture of the Kesepuhan Cirebon palace was able to increase student interest in learning and student achievement, this can be seen from the ability of students to convert distance units from places in the Kesepuhan palace, Cirebon.
Ethnomatematics of geometry shape in the Gedongsongo Temple Uswatun Khasanah; Yanuar Hery Murtianto; Kartinah Kartinah
Ethnomathematics Journal Vol 3, No 2 (2022): September
Publisher : Universitas negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ej.v3i2.52696

Abstract

The objective of the study is to explore and find out the ethnomathematics of Gedongsongo Temple, located in Central Java, Indoensia. The type of study is qualitative with an exploration way and ethnographic approach. The data obtained in the form of qualitative data, the source of research data obtained through observation, interviews, documentation, and study of literature related to Gedongsongo Temple. The data collection technique was done by questioning, observing, interviewing, and documenting. The results showed that the ethnomathematics of Gedongsongo Temple has the potential to be integrated into mathematics learning. Ethnomathematics that can be integrated includes the concept of flat area, volume of space,  comparison/ratio, reflection, and symmetry. The flat-geometry concept is found in the several parts of Gedongsongo Temple including square, rectangle, triangle, and trapezoid. The spatial-geometry concept is also found in several parts of Gedongsongo Temple including cubes, blocks, tubes, and a triangle prism. Meanwhile, the comparison/ratio concept found is the Golden Ratio on the fore-temple of Perwara in the area of Candi Gedong III. The symmetry and reflection concept is found in Candi Gedong I. These concepts can be applied in mathematics learning as a contextual geometry problem as well as a way of introducing cultural elements to students.
Ethnomathematical exploration of Cetho Temple on the topic of plane figures for elementary school Riska Purnamasari; Agustiningsih Agustiningsih; Ridho Alfarisi
Ethnomathematics Journal Vol 3, No 2 (2022): September
Publisher : Universitas negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ej.v3i2.51657

Abstract

Education and culture that exist in everyday life are closely related. In order to bridge the gap between culture and education, especially mathematics education, there is ethnomathematics. The existence of mathematics is inherent in everyday life, but many people are not aware of it. Examples of daily activities that contain elements of mathematics are calculating the price of groceries, and calculating the area and volume of certain buildings. The purpose of this study is to explore and describe the ethnomathematics of Cetho Temple and to examine the plane figures related to the basic competencies of fourth grade mathematics learning for elementary school students. This type of research is descriptive qualitative with data collection methods using observation, interviews, and documentation. Data analysis activities started from the instrument validation test, reduction, data presentation, and drawing conclusions. Triangulation technique was used to reduce bias during data analysis. The results showed that at Cetho Temple there was a geometric concept. The part of the temple that contains the concept of geometry, namely the statues, reliefs, and other important parts. The concept of geometry consists of the concept of the plane figures, spatial, polygonal, similar, and reflection. Based on these findings, the study focused on the flat structure material related to the basic competencies of fourth grade mathematics learning for elementary school students.
Developing mathematics comics through Instagram themed local culture as an alternative learning solution Nana Apriana Nur Hidayah; Winarno Winarno; Muhammad Istiqlal
Ethnomathematics Journal Vol 3, No 2 (2022): September
Publisher : Universitas negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ej.v3i2.50504

Abstract

This study aimed to explore mathematical comics learning media through Instagram social media with the theme of local culture as an alternative learning solution that is feasible to use in terms of validity, practicality, and effectiveness. This study used the ADDIE development model. Analysis, to determine the problem and solution. Design, that is designing learning materials and objectives; sketching names, figures, and characters; compiling a script; making a storyboard; creating Instagram feed content. Development is the process of finishing the manufacture of products. The implementation of the product validation test was carried out by two experts in mathematics education and tested by students and teachers in a Junior High School in Salatiga. Evaluation is carried out as the final version of the material for further research based on teacher and student responses. Data collection methods in this study are observation, interviews, questionnaires, literature study, and documentation. The results showed that comics with local characters can engage students in learning mathematics. First, they might be interested to know the local culture and then were realized mathematical thinking. The data showed an average validity of 4.15 with a valid category, average practicality of 4.27 categorized as practical, and an average evaluation test obtained a result of 8.5 so it was categorized as effective on student learning outcomes. Therefore, when creating comics for learning in social media, using local culture is suggested. 
Ethnomathematics in ten Indonesian traditional musical instruments Yohana Sinta Kristyasari; Heru Sukoco
Ethnomathematics Journal Vol 3, No 2 (2022): September
Publisher : Universitas negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ej.v3i2.53151

Abstract

This article aimed to describe the results of the ethnomathematical exploration of traditional musical instruments that can be used as mathematics teaching materials. The research method chosen in this study was the Systematic Literature Review (SLR) method. The SLR method is used to identify, review, evaluate, and interpret available research with areas and topics of interest. Data collection is done by documenting and reviewing all articles related to ethnomathematics on traditional musical instruments, selecting only those using Indonesian traditional instruments, and publishing them in Indonesian national journals. It was found that 10 articles matched these criteria. The results showed that ethnomathematics-based mathematics learning on traditional musical instruments can be used in the learning process and can be used as a learning resource, a means of introducing mathematics through culture, implemented in mathematics learning, and as teaching materials in learning mathematics. The uses in learning can be the shapes of the instruments as well as how to play the instruments that yield number patterns.
Suten Games: Exploration of Empirical and Theoretical Probability for Junior High School Mathematics Learning Dewi Oktaviani; Dewi Kinasih
Ethnomathematics Journal Vol 4, No 1 (2023): March
Publisher : Universitas negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ej.v4i1.59575

Abstract

Suten is one of the local games often played for determining a purpose fairly. The game is played in pairs by choosing Elephant, Ant, or Man by each player. The choosing is one of the applications of the probability concept learned by students of the junior-high school. The use of the game in the instructional process can aid students in relating the probability concept they learn to real events. The objective of the present study is to explore     the concepts of empirical and theoretical probabilities in the Suten game. The study is descriptive qualitative with an ethnographic approach to present detailed description and analysis concerning the Suten game in relation to probability material. Research results show the finding of the concepts of empirical and theoretical probabilities in the Suten game, especially in showing whether or not that Suten is a fair game. The game can be used in mathematics learning to introduce to students the concepts  empirical probability, sample space, sample point, and theoretical probability. In addition, positive aspects can be obtained when the Suten game is integrated in learning such as, among others, inter-appraisal of decisions, training intuition, and using the abilities of creative thinking in searchimg for strategies. 
Exploration of the weaving activities in Timor Island for mathematics learning Wara Sabon Dominikus; Patrisius Afrisno Udil; Ofirenty Elyada Nubatonis; Irna K. S. Blegur
Ethnomathematics Journal Vol 4, No 1 (2023): March
Publisher : Universitas negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ej.v4i1.58473

Abstract

The inclusion of ethnomathematical perspectives into the mathematics education of indigenous student is often described as being beneficial. Drawing on weaving activities from West Amarasi society in Timor Island, Indonesia, this paper examines the results from the exploration of mathematical concepts that exist and are practiced in this society. This is a descriptive exploratory with ethnographic qualitative approach research. Data were collected in March 2022 through observations, interviews, and documentation. Some indigenous people from Merbaun Village, West Timor, in East Nusa Tenggara Province, Indonesia, were participants in this research. The results showed that there were several ethnomathematics characteristics in the weaving activities of the West Amarasi society: counting, locating, measuring, designing, explaining, the use of implication logic, and estimating. It was also found mathematics concepts and ways of thinking such as the concept of multiplication as repeated addition, parallel of straight lines, geometric shapes, reflection, rotation, sizes and units, and logical implication. This finding can be used as a source of mathematics learning by teachers, researchers or mathematics education practitioners not only those local in West Amarasi but also in other similar places around the world.
The Geometry Transformation Concepts in Bead Craft Motifs by the Kenyah Dayak Tribe Muhammad Hafizh Naufal Yahya; Haeruddin Haeruddin; Achmad Muhtadin; Nanda Arista Rizki
Ethnomathematics Journal Vol 4, No 1 (2023): March
Publisher : Universitas negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ej.v4i1.58425

Abstract

When studying mathematics, many students consider mathematics to be a difficult subject because they see it as a close system that prioritizes standards of rigor, speed, and memory. Conventional learning methods might make students bored. Various model is needed to overcome this. One of which is the culture associated with learning mathematics, known as ethnomathematics. The purpose of this study was to explore the bead crafts of the Kenyah Dayak tribe, located in Kalimantan, Indonesia, that develop heritage motifs attributed to the concept of geometric transformations on rotation and dilatation. This type of research was qualitative research involving observation, interviews, and documentation. The subject of this study was bead craft in the local area and the object of this study was the concept of geometric transformation on rotation and dilatation that exists in the craft motifs of the beads made. The data obtained in this study provides insights into the various cultural objects that can be used for triggering mathematics thinking. Through this resource, students may understand geometric concepts such as rotation and dilation, applicable to the real context of their daily life.
The Imaginary Line Across Yogyakarta Land as an Ethnomathemathics Study Febriani Febriani; Aditia Pramudia Sunandar; Ulfa Aulia Syamsuri; Wipsar Sunu Brams Dwandaru
Ethnomathematics Journal Vol 4, No 1 (2023): March
Publisher : Universitas negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ej.v4i1.59984

Abstract

In attempt to explore Yogyakarta, the heritage city of Indonesia, the well known landmark, Tugu Pal Putih and the Yogyakarta Imaginary Line is explored. The purpose of this paper is to describe that this cultural context may be used as a reference for geometry learning. The method used in this research is a descriptive qualitative involving two historian experts in interviews. The results are that this line can be explored through ethnomathematics studies based on points, straight lines, comparison of distances between points on the imaginary line and the extension of the imaginary line. This line can be illustrated by an imaginary point located at the Tugu Pal Putih as the starting point to focus on thinking of the mathematical object. This line not only divides Yogyakarta imaginatively but also according to natural boundaries such as rivers. The extension of the imaginary line forms an area called the fertility area. The description of the patterns formed on the Yogyakarta Imaginary Line through ethnomathematics is expected to be used further as materials in the mathematics learning process.
The Position of Points, Lines and Planes in a Mosque Construction for Geometrical Visualisation Riza Isna Khoirun Nisa; Rania Nova Dechandra; Wahyuni Eka Maryati; Sri Prihatin Hartati
Ethnomathematics Journal Vol 4, No 1 (2023): March
Publisher : Universitas negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ej.v4i1.59929

Abstract

The purpose of this qualitative descriptive study was to identify the concepts of the positions of points, lines, and planes in the building elements of the Kauman Gedhe Mosque foyers such as pillars, ceilings, crossbars and the roof of the building. The research data was obtained from direct observation which was documented using a cellphone camera and visualized with the help of GeoGebra. The results of the study show that there are on the building elements of the Mosque concepts of the position of a point to a line (a point is inside the line and a point is not on the line), a point to a plane (a point is in the plane and a point is outside the plane), a line to a line (two parallel lines, two perpendicular intersecting lines, two non-perpendicular intersecting lines, two coincident lines, and two intersecting lines), a line to a plane (parallel lines, a plane perpendicular, and a plane coincident with a plane), and a plane to a plane (two parallel planes, two non-perpendicular intersecting planes, two perpendicularly intersecting planes, and two coincident planes). Based on the results of this study, it is concluded that there are 16 mathematical concepts found in the Gedhe Kauman Mosque. Visualization of abstract mathematical objects can easily be imagined through cultural sites. This is able to lighten cognitive loads so that it is easy to understand and students are encouraged to construct their own understanding based on the experience they have gained. 

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