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All Journal Journal on Mathematics Education (JME) AKSIOMA: Jurnal Program Studi Pendidikan Matematika Jurnal Elemen Journal of Medives KALAMATIKA Jurnal Pendidikan Matematika Wacana Akademika : Majalah Ilmiah Kependidikan IndoMath: Indonesia Mathematics Education Formatif: Jurnal Ilmiah Pendidikan MIPA M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Gema Wiralodra Range : Jurnal Pendidikan Matematika MATH-EDU: Jurnal Ilmu Pendidikan Matematika Jurnal Abdimas Prakasa Dakara Brillo Journal Jurnal Pengabdian Sains dan Humaniora VARIANSI: Journal of Statistics and Its Application on Teaching and Research International Journal of Science Education and Cultural Studies Innovative: Journal Of Social Science Research Indonesian Educational Research Journal Hexagon: Jurnal Ilmu dan Pendidikan Matematika Jurnal Infinity Journal of Mathematics Theory and Applications
Aloisius Loka Son
Universitas Timor
Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Public Health Social Sciences Other

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Journal : Brillo Journal

 1 
Exploring Ethnomathematics in the Activities of Traders at the Niki-Niki Traditional Market Misa, Yeni; Son, Aloisius Loka; Laja, Yosepha Patricia Wua
Brillo Journal Vol 3 No 2 (2024): Ethnomathematics and Resilience in Mathematics Education Innovations
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/bj.v3i2.40

Abstract

Mathematics is a form of culture inherent in all aspects of society's life. In the cultural practices of certain communities, mathematical concepts are involved. There is an intersection between culture and mathematics. Therefore, this research is conducted to explore the mathematical concepts used by traders. This study was conducted at the Niki-Niki Traditional Market. The research subjects consist of 6 individuals, with 2 betel nut sellers, 2 chili pepper sellers, and 2 woven fabric sellers. The data in this study are primary data collected through observation, interviews, and documentation techniques. Data analysis employs the techniques of ethnographic research data analysis, including domain analysis, taxonomic analysis, componential analysis, and cultural theme analysis. The results of the research indicate that there are mathematical concepts of plane geometry and integers in the activities of traders. Concepts of plane geometry include points, rectangles, circles, rhombuses, straight lines, curved lines, and fractal geometry. Meanwhile, mathematical concepts related to integers include sets, counting, addition, subtraction, division, and multiplication.
Mathematical Concepts and Cultural Values in Sonaf Tamkesi: Ethnomathematics Study in a Traditional Village on Timor Island Funan, Fedelia; Son , Aloisius Loka; Siahaan, Meiva Marthaulina Lestari
Brillo Journal Vol 3 No 2 (2024): Ethnomathematics and Resilience in Mathematics Education Innovations
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/bj.v3i2.49

Abstract

Mathematics is a universal science, and it is crucial for everyone to master it, both in terms of its applications and its cognitive patterns. The purpose of this research is to explore the concepts of mathematics and cultural values found in the artifacts of Sonaf Tamkesi Manufui. The study was conducted in the traditional village of Tamkesi, south Biboki District, North Central Timor Regency, in July 2023. The subjects of this study were three community leaders. The type of data collected for this research was primary data obtained through documentation and interviews between the researcher and the respondents. Data analysis was conducted through stages of domain analysis, taxonomy, componential analysis, and cultural themes. The research findings indicate that there are concepts of plane geometry in the artifacts such as trapeziums, rectangles, squares, rhombuses, triangles, circles, cylinders, hexagons, and cubes. Meanwhile, the cultural values of the artifacts in Sonaf Tamkesi are the roof symbolizes harmony, the door symbolizes greatness and respect for ancestors, the pillars symbolize vertical relations with ancestors, the betel-nut container symbolizes service, the clay pot symbolizes a gift from ancestors to the living, the hearth symbolizes balance, and harmony in achieving goals.
An Analysis of Grade VIII Students' Difficulties in Solving Circle Story Problems: A Study Based on Polya's Problem-Solving Theory Manekat, Septianingsi; Son, Aloisius Loka; Siahaan, Meiva Marthaulina Lestari
Brillo Journal Vol 4 No 2 (2025): Innovative Practices in Mathematics Teaching and Learning
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/bj.v4i2.70

Abstract

This study aims to explore the difficulties experienced by students of grade VIII of junior high school in solving circle story problems based on Polya's Theory. The research approach used is a qualitative approach. This type of research is qualitative descriptive research. This research was conducted in one of the junior high schools in North Central Timor Regency. The subjects of this study were grade VIII consisting of 20 students. The instruments used were 4 circle material test questions and interviews to determine the factors that cause students to have difficulty working on the questions. Data analysis techniques through the stages of test data analysis, data reduction, data display and conclusion drawing. The results of this study indicate that the difficulties faced by students are 1) difficulty understanding the problem, namely students have difficulty in positioning the function of the symbol on the known and asked parts of the question, 2) difficulty making a solution plan, namely students have difficulty connecting the known and asked elements so that students do not fully understand the strategy that will be used to plan the solution, 3) difficulty completing the solution plan, namely students have difficulty writing a complete formula to be used in solving the problem so that they do not find the results requested by the question, 4) difficulty re-checking, namely students do not know how to make conclusions from the results of their work.
Co-Authors Aan Juhana Senjaya admin pythagoras, admin Afeanpah, Regina Auw, Ester M.N. Elly Bau, Neta Deliana Bete, Hendrika Bimolo, Anna Sako Camilo Andrés Rodríguez-Nieto Cecilia Novianti Salsinha Darhim Darhim Delvion, Eduardus B.S. Destiana Mali , Maria Dircio-Vargas, Axel Dominikus Nitsae Efonius Piter Liwu Elisabeth Olo Eva Binsasi falentinus evandri abi Fatimah, Siti Faustinus Luan Fiki Alghadari Frederikus Seran Funan, Fedelia García-García, Javier Garcia-Gracia, Javier Gunadi, Farid I Ketut Sumantra I Ketut Widnyana Isnawan, Muhamad Galang Javier García-García Klau, Kondradus Yohanes Kondradus Yohanes Klau Kresensia Usolin Laja, Yosepha Patricia W. Lily Aulin Assya Lopo, Angelina Mada, Grandianus Seda Maifa, Talisadika Serrisanti Manekat, Septianingsi Maria Delviana Mali Maria Rosalinda Talan Mau, Maria Sensiana Misa, Yeni mone, ferdinandus Morales-Benitez, Leineri Naiheli, Maria Dolorosa Nailake, Maria Densiana Nampung, Nasrianus Nik, Nikolas Nugraha K. F. Dethan Nur Ahzan, Zulkaidah Nurwijayanti Oktovianus Mamoh Patricia Wua Laja, Yosepha PUTU SEKARWANGI SARASWATI Rizkiah Nurul Fitriani Rodríguez-Nieto, Camilo Andrés Ronaldus Ariyanto Jelahu Rosyadi Rosyadi Rosyadi Runisah, Runisah Salgado-Beltrán, Gerardo Selestina Nahak Siahaan, Meiva Marthaulina Lestari Simarmata, Justin Eduardo Sri Adi Widodo Sudirman Sudirman Sudirman Tae, Ana Paula Tas’au, Maria Fransiska Trivonia Bau, Anastasia Wua Laja, Yosepha Patricia Yakoba Yusina Muanley Yakobus Pffeferius Edvend Saba Agu Yohanes Jefrianus Kehi Yunita, Ika Zofar Agluis Banunaek