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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 DEVOTE: Jurnal Pengabdian Masyarakat Global 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 Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Public Health Social Sciences Other

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Mathematical Concepts and Cultural Values at Abui Community Culture: Ethnomathematics Study in Traditional Villages, Alor Regency, Indonesia Ester M. N. Elly Auw; Aloisius Loka Son; Yosepha Patricia W. Laja
Indonesian Educational Research Journal Vol. 1 No. 3 (2024): Education system and implementation to improve various skills
Publisher : CV. Samuel Manurung and Co

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/ierj.v1i3.30

Abstract

This study aims to explore mathematical concepts and cultural values in the Abui community, in the village of Takpala, Alor Regency, Indonesia. The research method used is qualitative research with an ethnographic approach. The research subjects are three informants and the research objects are the Fala foka house, Lopo, Moko, and the Lego-lego dance. The instruments used in this research are observation, interviews, and documentation. The research findings obtained include: 1) mathematical concepts found in Fala foka, Lopo, Moko, and Lego-lego dance in the traditional village of Takpala are plane figures such as squares, circles, rectangles, rhombuses, and triangles, as well as spatial figures such as square pyramids, cylinders and pointed cones, and concepts of lines and sets; 2) cultural values found in the roof of Fala foka include supplication, the attic symbolizes unity, the pillars symbolize the four cardinal directions, Lopo symbolizes purity, Moko symbolizes the identity of the Alor community, and the Lego-lego dance symbolizes unity. It is recommended for teachers to apply the results of this research in the learning process, and for further researchers to use the results of this research in designing mathematics learning based on ethnomathematics.
Development of Handout Media to Facilitate the Problem-Solving Abilities of Algebraic Functions Derivative for Class XI Senior High School Students Angelina Lopo; Aloisius Loka Son; Ferdinandus Mone; Javier Garcia-Gracia
Indonesian Educational Research Journal Vol. 2 No. 1 (2024): Education system approach and student abilities
Publisher : CV. Samuel Manurung and Co

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/ierj.v2i1.34

Abstract

The aim of this study is to develop valid, practical, and handout media effectof. This type of study is research and development. This research uses Plom model which consists of five phases, namely preliminary investigation, design, realization/construction, test, evaluation and revision, and implementation. Subject in this study includes experts, teachers and 15 students of class XI Mathematics and Natural Sciences at one of the Senior High Schools in Kefamenanu city, Indonesia. The data collection techniques used were questionnaires and tests. The validator consists of one lecturer in mathematics education and one mathematics teacher who assessed the quality of the handout media and the results of the assessment were declared valid. The level of practicality after being tested on students obtained a presentation score 83.49% so it is categorized as very practical, and also based on effectiveness test results obtained 81% of student grades in the very effective category. Thus, you can It was concluded that the handout media developed could facilitate solving ability’s algebraic function derivative problems are very valid, very practical, and very effective.
Strategies Used by Mexican Fourth-Grade Elementary Students in Solving Additive Word Problems Axel Dircio-Vargas; Javier García-García; Gerardo Salgado-Beltrán; Aloisius Loka Son
Indonesian Educational Research Journal Vol. 2 No. 3 (2025): Various strategies to improve cognitive and affective aspects of learners
Publisher : CV. Samuel Manurung and Co

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/ierj.v2i3.72

Abstract

To improve children's arithmetic learning, it is important to understand the strategies they use when solving arithmetic problems and the obstacles they find in this process. So, the objective of this research is to identify the strategies used by a group of Mexican fourth grade elementary school students in solving additive verbal arithmetic problems. We used a framework where the main theoretical elements that guided the study were characterized: strategies, types of strategies, verbal arithmetic problems, and the semantic and syntactic structures of the additive problems. This qualitative research, with a descriptive scope, uses case study as a method. The study cases were seven students from an Elementary School Located in ​​Zumpango de Neri, Guerrero, Mexico. To collect data, Task-Based Interviews were used, that were applied to the case studies in November 2024. The results allowed the identification of four reflective strategies: identifies a relevant keyword; selects the appropriate operation; performs mental calculation; and decomposes a numerical factor. Additionally, three non-reflective strategies were identified: uses an inappropriate keyword; operates with given data; and answers without performing operations. Some of the case studies used more than one strategy when solving some of the proposed tasks. These results allow suggesting that in the classroom the personal strategies used by students must be assessed in order to identify those that are thoughtless to help students travel towards the use of reflexive strategies. This will be possible through designs that incorporate problems resolving such as a central activity in the classroom.
Numeracy Skills of Junior High School Students: A Comparative Study Based on Learning Approach Interventions Ana Paula Tae; Aloisius Loka Son; Yohanes Jefrianus Kehi; Camilo Andrés Rodríguez-Nieto; Javier García-García
Indonesian Educational Research Journal Vol. 3 No. 1 (2025): Various Learning Strategies in Education to Facilitate Student Learning Outcome
Publisher : CV. Samuel Manurung and Co

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/ierj.v3i1.90

Abstract

This study aims to determine the achievement and improvement of students' numeracy skills based on the Realistic Mathematics Education (RME) approach intervention. This research used a quasi-experimental method with a pretest-posttest control group design. The research sample consisted of two classes, namely the experimental class that used the RME approach and the control class that used conventional methods. The instrument used was a numeracy description test question on the material of the Two-Variable Linear Equation System. The results showed that the achievement and improvement of students' numeracy skills, who learned through the realistic mathematics education approach, were better than students who learn through conventional approaches. This shows that learning with a realistic mathematics education approach can facilitate the numeracy skills of junior high school students. It is hoped that future researchers can apply the realistic mathematics education approach to other mathematical skills.
Mathematical Communication Skills in Middle School: A Study of Eighth-Grade Students in West Timor, Indonesia Anna Sako Bimolo; Aloisius Loka Son; Eduardus Beo Seso Delvion; Javier García-García
Indonesian Educational Research Journal Vol. 3 No. 2 (2025): Educational interventions and management to facilitate various student skills
Publisher : CV. Samuel Manurung and Co

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/ierj.v3i2.102

Abstract

This study aims to analyze the mathematical communication skills of grade VIII students of the First Secondary School on the material of Relations and Functions. The method used was qualitative descriptive research with the subjects of 21 students in class VIII-B for the 2024/2025 school year. Data was collected through a description test that included indicators of mathematical communication skills and interviews to deepen the results of the analysis. The results of the study show that students' written mathematical communication skills still vary with a tendency to be in the medium to low category. The indicator expressing mathematical ideas in written and visual form obtained the highest achievement of 76.38%, while the indicator interpreted and evaluated ideas only reached 52.86% and the use of mathematical notation reached 47.62%. High-skill students are able to write mathematical models correctly even though the use of formal terms is not consistent, moderate-skill students tend to provide limited explanations, while low-skill students copy more problems without constructing a proper mathematical model. These findings indicate the need for a learning strategy that emphasizes written mathematical communication exercises in a more orderly manner, both in the form of sentences, tables, graphs, and symbols to improve the quality of students' understanding of concepts
Determinants and Strategies for Strengthening Junior High Students’ Numeracy in the Indonesia–Timor Leste Border Region Yovita Maria Palla; Aloisius Loka Son; Hendrika Bete; Javier García-García; Camilo Andrés Rodríguez-Nieto
Indonesian Educational Research Journal Vol. 3 No. 3 (2026): Innovative and Inclusive Pathways to Strengthening 21st-Century Skills in Educa
Publisher : CV. Samuel Manurung and Co

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/ierj.v3i3.139

Abstract

The low numeracy skills of students in Indonesia remains a major challenge in many schools, including Junior high school students in the border area of ​​the Republic of Indonesia and the Democratic Republic of Timor Leste. The purpose of this study is to describe the level of students’ numeracy skills, identify aspects that still need improvement, explore the factors affecting students’ numeracy skills, and examine the efforts made to support numeracy development among junior high school students. This study employs a qualitative research design with a case study approach, conducted at one Junior High School in Kefamenanu City, Indonesia, during the odd semester of the 2024/2025 academic year. The participants were 21 eighth-grade students who completed a written test, followed by interviews with six students, their parents, and the mathematics teacher. Test items and interview guidelines were used to collect data. Results indicate that students’ numeracy skills are still relatively low, as reflected in the low average test scores. The numeracy aspects that require the most improvement are application and reasoning. Factors influencing numeracy skills include internal factors-such as interest, motivation, understanding, and attitude-and external factors, including the learning environment, facilities and infrastructure, parental involvement, and teaching strategies. Efforts to enhance numeracy skills include increasing students’ interest and motivation, strengthening conceptual understanding, developing application and reasoning skills, and implementing context-based learning strategies
An Analysis of Grade VIII Students' Difficulties in Solving Circle Story Problems: A Study Based on Polya's Problem-Solving Theory Septianingsi Manekat; Aloisius Loka Son; Meiva Marthaulina Lestari Siahaan
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.
Achievement and Improvement of Junior High School Students' Numeracy Skills through a Realistic Mathematics Education Approach Maria Elisabeth Timo; Aloisius Loka Son; Cecilia Novianti Salsinha
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.v4i2.74

Abstract

The results of a survey conducted by PISA show that the achievement of students' numeracy skills in Indonesia is relatively low, with many students having difficulty applying basic mathematical concepts in everyday life. This condition requires 21st-century learning to not only focus on mastering content, but also on developing numeracy skills that are integrated into various subjects. Therefore, this study was conducted to determine the achievement and improvement of numeracy skills of grade VIII junior high school (JHS) students through the realistic mathematics education (RME) approach. The research method used is a quantitative method with a quasi-experimental research type, which was conducted at a junior high school in North Central Timor Regency. The instrument used was a numeracy ability test sheet. The data obtained were analyzed using the t-test. The results of the study showed that the achievement and improvement of numeracy skills of grade VIII junior high school students who studied through RME approach were higher than students who studied without the RME approach. Specifically, students taught with the RME approach showed better understanding in solving contextual problems and applying mathematical concepts, and experienced a more significant increase in scores between the pretest and posttest. It is recommended for junior high school mathematics teachers to implement RME to facilitate students' numeracy skills. It is recommended for junior high school mathematics teachers to implement RME to facilitate students' numeracy skills.
Implementation of School Literacy Movement Program at the Level of Junior High School Education Units Aloisius Loka Son; Maria Rosalinda Talan; Ferdinandus Mone
Gema Wiralodra Vol. 14 No. 3 (2023): Gema Wiralodra
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/gw.v14i3.568

Abstract

The School Literacy Movement (SLM) is a program designed to facilitate the acquisition of student literacy competencies. Schools that implement this government program will undoubtedly have an impact on the literacy abilities of their students, including reading literacy, scientific literacy, digital literacy, numeracy, and so on. This forms the basis for conducting research with the aim of describing the implementation of SLM in Junior High Schools throughout the Kefamenanu Sub-District. The respondents in this study include school principals, SLM administrators, library heads, Mathematics teachers, and Indonesian Language teachers. Data collection techniques employed are interviews and observation. Subsequently, data is analyzed using the flow model by Miles and Huberman, which involves data reduction, data presentation, data verification, and conclusion drawing. Findings from the research indicate that junior high schools in the Kefamenanu Sub-District have implemented SLM from the habituation stage to the development and learning stages; however, the implementation is inconsistent and not yet optimal. Thus, the execution of SLM requires maximum attention from stakeholders, involving teachers, parents, alumni, and community members.
Numeracy Skills of Junior High School Students: A Comparative Study Based on Learning Approaches and Gender Adelburga Indra; Aloisius Loka Son; Cecilia Novianti Salsinha; Javier García-García
Indonesian Educational Research Journal Vol. 4 No. 1 (2026): Current trends in education and learning
Publisher : CV. Samuel Manurung and Co

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/ierj.v4i1.153

Abstract

This study aims to compare the numeracy skills of eighth-grade junior high school students through the Realistic Mathematics Education (RME) approach in terms of gender. This research employed a quantitative method with a quasi-experimental design, specifically a pretest-posttest control group design. The population consisted of all eighth-grade students at a public junior high school in Kefamenanu in the 2025/2026 academic year. The sample included class VIII E as the experimental group and class VIII D as the control group. The research instrument was a numeracy skills test. Data were analyzed using the independent samples t-test and the Mann-Whitney U test. The results indicated that students’ numeracy skills taught through the RME approach were higher than those taught through the conventional approach. In terms of gender, the findings revealed no significant differences in numeracy skills between male and female students, both overall and within the RME learning approach. Future researchers are encouraged to apply the RME approach to develop students’ mathematical problem-solving and critical thinking skills while also exploring students’ thinking processes in greater depth through qualitative methods, particularly interviews, to gain a more comprehensive understanding of how students construct mathematical concepts, develop problem-solving strategies, and solve contextual problems.
Co-Authors Aan Juhana Senjaya Adelburga Indra admin pythagoras, admin Ana Paula Tae Angelina Lopo Anna Sako Bimolo Axel Dircio-Vargas Bete, Hendrika Camilo Andrés Rodríguez-Nieto Camilo Andrés Rodríguez-Nieto Cecilia Novianti Salsinha Darhim Darhim Destiana Mali , Maria Dominikus Nitsae Eduardus Beo Seso Delvion Efonius Piter Liwu Elisabeth Olo Ester M. N. Elly Auw Eva Binsasi falentinus evandri abi Fatimah, Siti Faustinus Luan Fiki Alghadari Frederikus Seran Funan, Fedelia García-García, Javier Gerardo Salgado-Beltrán Gunadi, Farid Handrianus Mentu I Ketut Sumantar I Ketut Sumantra I Ketut Widnyana I Ketut Widnyana Isnawan, Muhamad Galang Javier García-García Javier Garcia-Gracia Jefrianus Nino Klau, Kondradus Yohanes Kondradus Yohanes Klau Kresensia Usolin Lily Aulin Assya Mada, Grandianus Seda Maifa, Talisadika Serrisanti Maria Delviana Mali Maria Densiana Nailake Maria Elisabeth Timo Maria Fransiska Tas’au Maria Rosalinda Talan Maria Rosalinda Talan Mau, Maria Sensiana Misa, Yeni mone, ferdinandus Morales-Benitez, Leineri Naiheli, Maria Dolorosa Nasrianus Nampung Neta Deliana Bau Nik, Nikolas Nugraha K. F. Dethan Nur Ahzan, Zulkaidah Nurwijayanti Oktovianus Mamoh Patricia Wua Laja, Yosepha PUTU SEKARWANGI SARASWATI Regina Afeanpah Rizkiah Nurul Fitriani Ronaldus Ariyanto Jelahu Rosyadi Rosyadi Rosyadi Runisah, Runisah Salgado-Beltrán, Gerardo Sekar Wangi Selestina Nahak Septianingsi Manekat Siahaan, Meiva Marthaulina Lestari Simarmata, Justin Eduardo Sri Adi Widodo Sudirman Sudirman Sudirman Trivonia Bau, Anastasia Wua Laja, Yosepha Patricia Yakoba Yusina Muanley Yakobus Pffeferius Edvend Saba Agu Yohanes Jefrianus Kehi Yosepha Patricia W. Laja Yovita Maria Palla Yunita, Ika Zofar Agluis Banunaek