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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 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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Pembelajaran Melalui Pendekatan Pendidikan Matematika Realistik Untuk Meningkatkan Kemampuan Pemecahan Masalah Matematika Siswa SMP Destiana Mali , Maria; Loka Son, Aloisius
Hexagon: Jurnal Ilmu dan Pendidikan Matematika Vol. 1 No. 2 (2023): October
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33830/hexagon.v1i2.5578.

Abstract

This study was conducted with the aim of determining the comparison of achievement and improvement in the problem-solving ability of students who learn through realistic mathematics education and a conventional approach. The study used quantitative methods in the form of a quasi-experiment. The design of this study used a pretest-posttest control group design. The participants in this study were students in grade VIII from one of the junior high schools in the Belu district. The sample in this study consisted of 22 students from class VIIIA as the experimental group, and 22 students from class VIIIB as the control group. The research instruments used were a problem-solving ability test and observation sheets. The results showed that the achievement and improvement in the mathematics problem-solving ability of students who learned through the realistic mathematics education approach were better than those of students who learned with a conventional approach. Learning with a realistic mathematics education approach can facilitate the problem-solving skills of junior high school students. It is recommended that future researchers apply the realistic mathematics education approach to other mathematical abilities.
Pencapaian dan Peningkatan Kemampuan Berpikir Kritis Siswa Kelas VIII SMP Melalui Pendekatan Pendidikan Matematika Realistik Trivonia Bau, Anastasia; Loka Son, Aloisius; Patricia Wua Laja, Yosepha
Hexagon: Jurnal Ilmu dan Pendidikan Matematika Vol. 1 No. 2 (2023): October
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33830/hexagon.v1i2.5724.

Abstract

The aim of this study was to compare the achievement and improvement of students' critical thinking skills through realistic mathematics education approaches and conventional learning. This study uses a quantitative method with a quasi-experimental approach. The research design used a pretest-posttest control group design. The experimental group learning used the PMR approach and the control group used conventional learning. This study was conducted in October 2022. The participants in this study were students of class VIII of a junior high school in Belu district. The sample in this study was 50 students consisting of two classes, each class consisting of 25 students. The research instrument was in the form of critical thinking ability tests and learning implementation observation sheets. Analysis of achievement data and improvement of necessary thinking skills using the Independent Samples t-test. The results of the study show that the achievement and improvement of students' mathematical necessary thinking skills who learn through a realistic mathematics education approach are better than students who learn with conventional approaches. This shows that learning with a realistic mathematics education approach can facilitate junior high school students critical thinking abilities
Strategies Used by Mexican Fourth-Grade Elementary Students in Solving Additive Word Problems Dircio-Vargas, Axel; García-García, Javier; Salgado-Beltrán, Gerardo; Son, Aloisius Loka
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.
Penerapan Model Integrated Farming Berbasis Teknologi Konservasi sebagai upaya Mitigasi Bencana di Desa Nunbena di Kabupaten Timor Tengah Selatan Agu, Yakobus Pffeferius Edvent Saba; Nik, Nikolas; Son, Aloisius Loka; Banunaek, Zofar Agluis; Sumantra, I Ketut; Widnyana, I Ketut; Saraswati, Putu Sekarwangi
Innovative: Journal Of Social Science Research Vol. 5 No. 2 (2025): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v5i2.18214

Abstract

Kegiatan Pengabdian ini bertujuan untuk mendukung ketercapaian di bidang pangan melalui pendekatan sistem integrated farming. Sistem Integrated Farming merupakan sistem pertanian terintegrasi dengan memanfaatkan keterkaitan antara tanaman (kehutanan, Perkebunan, pangan dan hortikultura) serta ternak dan perikanan untuk mendapatkan agroekosistem yang mendukung produksi pertanian, peningkatan ekonomi dan pelestarian sumberdaya alam. Mitra Pengabdian ini adalah kelompok petani lokal Fatutupuk di desa Nunbena, TTS- NTT. Bentuk pelaksanaan teknologi dan inovasi yang diterapkan pada mitra Kelompok tani Fatutupuk berupa model integrated farming berupa Pembangunan demplot pangan Lestari berbasis teknologi BUDIKDAMBER. Kegiatan ini berhasil dilaksanakan sesuai dengan rencana, dengan pencapaian lebih dari 80% untuk sebagian besar indikator. Penguasaan materi oleh peserta yang mencapai 85% menunjukkan bahwa informasi yang disampaikan dapat diterima dengan baik. Selain itu, target 7 demplot budidaya sayur juga berhasil dibuat dengan berbagai jenis sayuran memberikan bukti nyata bahwa 80% peserta paham tentang bagaimana teknik budidaya yang benar sehingga menghasilkan produk pertanian yang berkualitas.
Profile of Mathematics Communication Ability of Seventh-Grade Students in Solving Set Problems Based on Cognitive Style Kresensia Usolin; Aloisius Loka Son; Talisadika Serrisanti Maifa; Javier García-García
RANGE: Jurnal Pendidikan Matematika Vol. 4 No. 2 (2023): RANGE Januari 2023
Publisher : Pendidikan Matematika UNIMOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpm.v4i2.3593

Abstract

This study aims to describe the profile of students' mathematical communication ability in solving set problems in terms of field-dependent and field-independent cognitive styles. This research method includes qualitative descriptive research. In this study, the collected data was in the form of words so that it did not emphasize numbers. Participants in this study consisted of three students with a field-dependent cognitive style and three students with a field-independent cognitive style from class VII at one of the junior high schools in North Central Timor Regency. The instruments used are a mathematical communication ability test, Group Embedded Figure Test, and interviews. The results showed that students with a field-independent cognitive style have high mathematical communication abilities. This can be seen from the test results of the three field-independent students who are able to express mathematical ideas through oral, written, demonstration and describe in visual form, are able to analyze, interpret, and evaluate mathematical ideas through oral, written, and other visual forms, and are able to use terms, mathematical notations, and their structures to present ideas, describe relationships, and situation models when solving problems mathematical sets. Meanwhile, students with a field-dependent cognitive style have low mathematical communication abilities. This can be seen from the results of the mathematics communication ability test of the three field-dependent students who have not been able to meet all the indicators of mathematical communication.
Bentuk Distribusi dan Rata-Rata Pendapatan Apotek Gracia Farma Sebelum dan Saat Covid-19 Frederikus Seran; Aloisius Loka Son; Eva Binsasi
Journal of Mathematics Theory and Applications Vol. 3 No. 2 (2025): Edisi April 2025
Publisher : Program Studi Matematika, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/j-math.v3i2.5496

Abstract

This research was carried out because of the emergence of the corona virus in Wuhan, China in December 2019. This virus has had many impacts, one of which is the amount of income in micro and macro businesses. The aim of this research is to determine the form of distribution and average income of the Gracia Farma Pharmacy before Covid-19 and during Covid-19. This research was carried out at the Gracia Farma Pharmacy, Kefamenanu City, North Central Timor Regency from 1 November 2019 to 31 August 2020. The data processing technique in this research was preceded by Distribution Fitting and parameter estimation using the Maximum Loglikehood Estimation (MLE) method, then model selection was carried out. The best method is using Akaike's Information Criterion (AIC) and Bayesian Information Criterion (BIC). The results of this research show that the form of distribution that corresponds to the total income data before Covid-19 is a Normal distribution with an average income of IDR 306,832 and the form of distribution that corresponds to the amount of income during Covid-19 is a Normal distribution with an average income Rp. 332,050.
ANALISIS PENDAPATAN PERUSAHAAN TEMPE DAN TAHU MENGGUNAKAN MODEL AUTOREGRESIVE INTEGRATED MOVING AVERAGE : Studi Kasus: UD Alfaria Kota Kefamenanu falentinus evandri abi; Eva Binsasi; Faustinus Luan; Aloisius Son
Journal of Mathematics Theory and Applications Vol. 3 No. 1 (2024): Edisi Oktober 2024
Publisher : Program Studi Matematika, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/j-math.v3i1.6447

Abstract

Penelitian ini bertujuan untuk memprediksi pendapatan usaha tempe dan tahu, jenis penelitian yang digunakanadalah penelitian kuantitatif. Penelitian ini dilaksanakan di UD Alfaria Kecamatan Kota Kefamenanu, KabupatenTTU. Sumber data pada penelitian ini adalah data sekunder yaitu data pendapatan tempe dan tahu, instrumenpenelitian yang digunakan adalah dokumentasi, berupa catatan pendapatan harian selama 7 bulan. Data yangdiperoleh, selanjudnya dianalisis menggunakan Aplikasi R. Hasil penelitian ini menunjukan bahwa model Arima(0,1,1) adalah model terbaik dengan Persamaan modelnya adalah:
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.
Errors and Their Causes in Solving One-Variable Linear Equations Among Mexican High School Students Morales-Benitez, Leineri; Salgado-Beltrán, Gerardo; Son, Aloisius Loka; García-García, Javier
MATH-EDU: Jurnal Ilmu Pendidikan Matematika Vol. 10 No. 1 (2025): MATH-EDU: Jurnal Ilmu Pendidikan Matematika
Publisher : Program Studi Pendidikan Matematika, Fakultas Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jipm.v10i1.9391

Abstract

The aim of this study was to identify the errors made by a group of Mexican High School students when solving linear equations, as well as their possible causes. Data collection was conducted through a task-based interview administered to 30 students from a public school in southern Mexico. The results revealed that students made arithmetic errors when solving linear equations, including difficulties in performing operations with integers, handling fractions, applying the distributive property, and transposing terms incorrectly. By analyzing students' reasoning, it was inferred that these errors stem mainly from poor assimilation of arithmetic concepts, affective and emotional factors, and the presence of cognitive obstacles. Additionally, both procedural and conceptual algebraic errors were identified. According to the conceptual framework, these errors originate from limited manipulation of algebraic language, incorrect application of procedural rules, and didactic and cognitive obstacles. These findings encourage reflection on future research aimed at improving the learning of linear equations at the high school level.
Numeracy Skills of Junior High School Students: A Comparative Study Based on Learning Approach Interventions Tae, Ana Paula; Son, Aloisius Loka; Kehi, Yohanes Jefrianus; Rodríguez-Nieto, Camilo Andrés; García-García, Javier
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.
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 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