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All Journal Jurnal Infinity Kreano, Jurnal Matematika Kreatif-Inovatif AKSIOMA: Jurnal Program Studi Pendidikan Matematika E-Dimas: Jurnal Pengabdian kepada Masyarakat Math Didactic: Jurnal Pendidikan Matematika Desimal: Jurnal Matematika Dinamisia: Jurnal Pengabdian Kepada Masyarakat Journal of Honai Math Jurnal Cendekia : Jurnal Pendidikan Matematika PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Ilmiah Pendidikan Citra Bakti JPMI (Jurnal Pembelajaran Matematika Inovatif) Jurnal Pengabdian Masyarakat Borneo Management Studies and Entrepreneurship Journal (MSEJ) Asimtot : Jurnal Kependidikan Matematika Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang SEPREN: Journal of Mathematics Education and Applied Range : Jurnal Pendidikan Matematika LOSARI: Jurnal Pengabdian Kepada Masyarakat Prima Abdika: Jurnal Pengabdian Masyarakat STRATEGY : Jurnal Inovasi Strategi dan Model Pembelajaran Journal of Education Research Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat Riemann : Research of Mathematics and Mathematics Education Indonesian Educational Research Journal Jurnal Infinity Jurnal Ilmu Pendidikan dan Bahasa Jurnal Jendela Matematika Jurnal Pendidikan MIPA Jurnal Pendidikan Progresif Jurnal Ilmiah Pendidikan Citra Bakti Senadika
Samuel I. Leton
Universitas Katolik Widya Mandira
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Public Health Social Sciences Transportation Other

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Analisis Hambatan Belajar Siswa SMPK Adisucipto Dalam Menyelesaikan Soal Bangun Ruang Sisi Datar Prisma Putriyani Lopes, Gratia Ina; Leton, Samuel Igo
PROSIDING SENADIKA : Seminar Nasional Akademik Vol 1 No 1 (2024): PROSIDING SEMINAR NASIONAL AKADEMIK (SENADIKA) 2024
Publisher : PROSIDING SENADIKA : Seminar Nasional Akademik

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Abstract

Penelitian ini dilakukan untuk mengetahui hambatan belajar siswa pada materi bangun ruang sisi datar prisma bagi siswa SMP kelas VIII di SMPK St. Agustinus Adisucipto Penfui Kupang. Adapun tujuan dari dilakukannya observasi ini diantaranya: 1). Mengidentifikasi karakteristik siswa-siswi dalam menghadapi pembelajaran, 2). Mengetahui kemampuan siswa dalam materi bangun ruang sisi datar prisma, 3). Mengetahui hambatan belajar siswa dalam pembelajaran terkhususnya materi bangun ruang sisi datar prisma, 4). Memecahkan masalah dalam pembelajaran. Metode penelitian yang digunakan dalam penelitian ini adalah penelitian kualitatif. Penelitian ini termasuk jenis penelitian pengembangan dengan mengacu pada pendapat Borg dan Gall. Produk yang dikembangkan dalam penelitian ini adalah analisis hambatan belajar siswa dalam menyelesaikan soal – soal bangun ruang sisi datar prisma serta populasinya adalah siswa – siswi kelas VIII SMPK Adisucipto Penfui Kupang. Dalam penelitian ini peneliti mengambil sampel dari kelas VIIIC yang berjumlah 32 orang.
Analisis Hambatan Belajar Siswa Melalui Desain Didaktis Materi Refleksi Terhadap Garis Y=X Dan Garis Y=-X Laka, Anastasia Lorensa; Djong, Kristoforus Djawa; Manoe Gawa, Maria Gracia; Leton, Samuel Igo
PROSIDING SENADIKA : Seminar Nasional Akademik Vol 1 No 1 (2024): PROSIDING SEMINAR NASIONAL AKADEMIK (SENADIKA) 2024
Publisher : PROSIDING SENADIKA : Seminar Nasional Akademik

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Abstract

Dalam pembelajaran matematika, siswa sering mengalami berbagai hambatan selama proses pembelajaran. Hal ini menjadikan siswa kurang mampu memahami materi yang ada, sehingga berdampak pada kemampuan matematis dan hasil belajar siswa. Oleh sebab itu hambatan-hambatan yang dialami siswa perlu dianalisis, agar kemudian dapat diberikan solusi untuk dapat mengurangi atau bahkan mengatasi hambatan yang dialami siswa. Penelitian ini bertujuan untuk menganalisis hambatan belajar yang dialami siswa dalam materi refleksi khususnya terhadap garis y=x dan terhadap garis y=-x serta memberikan solusi untuk mengatasi hambatan dalam pembelajaran yang dialami siswa. Penelitian ini dilakukan di SMA NEGERI 5 KUPANG kelas XI L terhadap 30 orang. Metode yang digunakan dalam penelitian ini adalah metode kualitatif berupa penelitian desain didaktis (didactical design research). Metode pengumpulan data yang digunakan yaitu wawancara, observasi dan tes. Hasil dari penelitian ini adalah suatu desain didaktis alternatif yang dapat digunakan dalam pembelajaran matematika, transformasi geometri materi refleksi terhadap garis dan garis .
Analisis Hambatan Belajar (Learning Obstacle) Pada Materi Koefisien Determinasi W.Sogen, Paskalia Gasela; Djong, Kristoforus Djawa; Leton, Samuel Igo
PROSIDING SENADIKA : Seminar Nasional Akademik Vol 1 No 1 (2024): PROSIDING SEMINAR NASIONAL AKADEMIK (SENADIKA) 2024
Publisher : PROSIDING SENADIKA : Seminar Nasional Akademik

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Abstract

Penelitian ini bertujuan untuk mengetahui hambatan belajar yang dialami oleh peserta didik dalam mempelajari mata pelajaran matematika materi koefisien determinasi. Penelitian ini menggunakan metode penelitian kualitatif dengan proses design didactical research. Metode pengumpulan data dalam penelitian ini menggunakan tes, wawancara dan observasi. Tes diberikan pada 31 orang siswa SMA kelas XI. Hasil penelitian menunjukkan bahwa terdapat hambatan belajar yang dialami oleh peserta didik kelas XIF pada mata pelajaran matematika materi koefisien determinasi. Bentuk hambatan belajar antara lain; 1) kurang kesiapan siswa dalam belajar; 2) kesulitan dalam menyelesaikan soal. Upaya dalam mengatasi hambatan belajar tersebut adalah salah satu diantaranya membangun konsep dasar matematika serta pemahaman matematika yang tepat dengan mengajarkan konsep, prinsip, dengan bahasa yang mudah bagi peserta didik.
Mapping the Layers of Understanding: An Analysis of Mathematical Comprehension in Literacy Questions using the Pirie-Kieren Theory Uskono, Irmina Veronika; Jagom, Yohanes Ovaritus; Djong, Kristoforus Djawa; Lakapu, Meryani; Dosinaeng, Wilridus Beda Nuba; Leton, Samuel Igo; Batarius, Patrisius; Mamulak, Natalia Magdalena Rafu; Guterres, Ilda
Jurnal Pendidikan MIPA Vol 26, No 4 (2025): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v26i4.pp2436-2452

Abstract

The Pirie-Kieren theory provides a dynamic framework that explains how mathematical understanding develops in layers, starting from initial introduction to reflection through eight layers of understanding. The eight layers of understanding are Primitive Knowing, Image Making, Image Having, Property Noticing, Formalizing, Observing, Structuring, and Inventising. This study aims to analyze students' mathematical understanding in solving literacy problems based on Pirie-Kieren's theory. This study is a qualitative descriptive study, involving 15 tenth-grade students at SMA Negeri 2 Kupang Barat, Indonesia. The research instruments used were literacy tests and interviews. In-depth interviews were conducted with student representatives who had reached each layer of understanding. Student representatives were selected based on purposive sampling. Data analysis in this study was carried out in four stages, namely data reduction, data presentation, conclusion drawing, and triangulation. The literacy test data were analyzed based on Pirie-Kieren's eight layers of understanding. The eight layers of understanding are. The results show that 73.33% of students reached the image having a layer of understanding, 13.33% reached the formalizing layer, 6.67% reached the image-making layer, and 6.67% reached only the primitive knowing layer. No students reached the observing, structuring, or inventing layers. The dominance of students in the image, having a level of understanding, shows that most students have only reached the initial stage. These results indicate that students' mathematical understanding of literacy questions remains at a basic level and has not developed into a reflective understanding.    Keywords: mathematical literacy, literacy questions, mathematical understanding, Pirie Kieren theory.
METODE GASING SEBAGAI STRATEGI EFEKTIF PERKALIAN DUA DIGIT BAGI SISWA SMPK ADISUCIPTO Luon, Maria Adriani Pulo; Leton, Samuel Igo; Henidin, Theresia
STRATEGY : Jurnal Inovasi Strategi dan Model Pembelajaran Vol. 5 No. 4 (2025)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/strategi.v5i4.8580

Abstract

Two digit multiplication ability is an essential numeracy skill for junior high school students as a foundation for understanding more advanced mathematical topics such as linear equations, ratios, and algebra. However, observations at SMPK Adisucipto, particularly in class VII D, indicate that many students still experience difficulties performing two-digit multiplication quickly and accurately. This study aims to analyze the effectiveness of the Gasing method (Easy, Fun, and Enjoyable) in improving two digit multiplication skills among 31 seventh-grade students at SMPK Adisucipto. The research employed a one-group pretest–posttest design. The instruments included a two-digit multiplication test and a student learning activity observation sheet. The results showed a significant increase in students’ average scores, from 56.80 on the pretest to 85.40 on the posttest. Student responses toward the Gasing method were also highly positive, with percentages ranging from 85% to 95% in the categories of effectiveness, ease, speed, and simplicity. These findings demonstrate that the Gasing method not only improves learning outcomes but also creates a simpler, more enjoyable, and more meaningful learning experience ABSTRAK Kemampuan perkalian dua digit merupakan keterampilan numerasi yang penting bagi siswa SMP sebagai dasar untuk memahami materi lanjutan seperti persamaan linear, perbandingan, dan aljabar. Namun, hasil observasi di SMPK Adisucipto, khususnya pada kelas VII D, menunjukkan bahwa banyak siswa masih mengalami kesulitan dalam melakukan perkalian dua digit secara cepat dan tepat. Penelitian ini bertujuan menganalisis efektivitas metode Gasing (Gampang, Asyik, dan Menyenangkan) dalam meningkatkan kemampuan perkalian dua digit pada 31 siswa kelas VII D SMPK Adisucipto. Pendekatan penelitian menggunakan desain pretest-posttest one group design. Instrumen penelitian berupa tes kemampuan perkalian dua digit dan lembar observasi aktivitas belajar. Hasil penelitian menunjukkan peningkatan yang signifikan pada nilai rata-rata siswa dari 56,80 pada pretest menjadi 85,40 pada posttest. Respon siswa terhadap metode Gasing juga sangat positif dengan persentase 85–95% pada kategori efektivitas, kemudahan, kecepatan, dan kesederhanaan. Temuan ini menunjukkan bahwa metode Gasing tidak hanya meningkatkan hasil belajar, tetapi juga menciptakan pengalaman belajar yang lebih sederhana, menyenangkan, dan bermakna.    
Dari Lisan ke Tulisan: Penyusunan Modul Tenun untuk Pelestarian Budaya dan Pemberdayaan Masyarakat Bonen: From Oral to Written: Developing a Weaving Module for Cultural Preservation and Community Empowerment in Bonen Lakapu, Meryani; Leton, Samuel Igo; Mberu, Yuliana Bhara; Sau, Antonius Arnoldus Janssen; Benu, Cindy Ahia Pricilia
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 11 No. Suppl-1 (2026): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v11iSuppl-1.10919

Abstract

This community service program was carried out in Bonen Village, Kupang Regency, aiming to preserve traditional weaving culture while empowering women and young generations. The leading partner of this activity was the Ume Halan Foundation, which mentors the Pasuklo Weaving Community. The primary problems identified were the lack of regeneration of young weavers and the absence of written guidelines for the weaving learning process. The program was implemented through a participatory approach comprising several stages: preparation and socialization; focus group discussions to enrich data; module revision and trials; training on module use; and continuous mentoring and evaluation. The outcome of this program is a locally wisdom–based weaving module that introduces motifs, basic weaving techniques, tools and materials, and the use of natural dyes. The module was produced in both printed and digital formats to ensure accessibility across generations. The training involved approximately 15 elementary school students from SD Inpres Bonen and 12 senior weavers from the Pasuklo Community. The participatory evaluation showed that 80% of participants found the module easy to understand and engaging, and that teachers and local weavers agreed it effectively facilitated intergenerational knowledge transfer. Overall, this program contributes to cultural preservation, women's empowerment, and the revitalization of young weavers in Bonen Village, while strengthening Ume Halan's role as a sustainable community learning center.
Pendalaman Materi dan Pelatihan Soal-Soal Olimpiade Bagi Guru SMP Yohanes Ovaritus Jagom; Kristoforus Djawa Djong; Meryani Lakapu; Samuel Igo Leton; Irmina Veronika Uskono; Wilfridus Beda Nuba Dosinaeng
KOMUNITA: Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol 5 No 2 (2026): Mei
Publisher : PELITA NUSA TENGGARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60004/komunita.v5i2.543

Abstract

OSN is an activity that comprehensively develops a culture of learning, creativity, and motivation to achieve. However, the lack of knowledge among teachers and students about mathematics Olympiad questions has resulted in poor performance. The purpose of this community service activity is to equip teachers with basic skills and techniques in understanding Olympiad material so that they can guide students to acquire the skills to solve Olympiad questions. The methods used were lectures, discussions, and simulations. The results obtained from this activity were very effective, as demonstrated by an increase in the average score from 32.33 on the pretest to 85.67 on the posttest, indicating significant progress in mastery of concepts and basic skills in solving Olympiad questions. In addition to improving academic abilities, the results of the evaluation through questionnaires showed that participants were satisfied with the implementation of the activity, both in terms of material and delivery methods. Participants gained new insights and strategies in solving Olympic questions, which had an impact on increasing their confidence and motivation. Similar community service activities in the future need to be designed with a stronger focus on the basic understanding stage so that the results achieved can be more optimal and evenly distributed.
Mengintegrasikan Kearifan Lokal dan Teknologi: Bahan Ajar Scan to Learn pada Materi Teorema Pythagoras Samuel Igo Leton
Sepren Vol 7 No 02 (2026): Edisi Mei 2026
Publisher : Prodi Pendidikan Matematika FKIP Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sepren.v7i02.2503

Abstract

Mathematical literacy is an important competency because it helps students formulate, use, and interpret mathematics in real-life contexts. However, the teaching of the Pythagorean theorem still frequently emphasizes formula memorization and procedures, causing students to struggle with understanding its geometric meaning, representations, and application in contextual problems. This study aims to develop Scan to Learn teaching materials integrated with local wisdom and Augmented Reality on the topic of the Pythagorean theorem to improve students' mathematical literacy. The study employed a Research and Development approach using the ADDIE model through the stages of analysis, design, development, implementation, and evaluation. The research subjects were 25 eighth-grade students at Adisucipto Junior High School in Kupang City, with instruments consisting of validation sheets, teacher and student response questionnaires, mathematical literacy tests, and student activity observation sheets. The results showed that the teaching materials obtained a mean validation score of 3.45, categorized as very good. Student responses reached 96.93% and teacher responses reached 96%, placing the product in the very practical category. In terms of effectiveness, all students achieved mastery with a mean post-test score of 87.76 and an N-Gain of 0.62, categorized as moderate. The Scan to Learn teaching materials based on local wisdom and Augmented Reality are deemed suitable for use as a contextual, visual, and meaningful alternative for learning Pythagoras. This product contributes to strengthening mathematical literacy by connecting mathematical concepts with local culture and interactive visualization.
Local Wisdom Literacy: Promising Context Integration in Algebra Learning Samuel Igo Leton; Meryani Lakapu; Wilfridus Beda Nuba Dosinaeng; Kristoforus Djawa Djong; Nelly Fitriani
RANGE: Jurnal Pendidikan Matematika Vol. 7 No. 2 (2026): Range Januari 2026
Publisher : Pendidikan Matematika UNIMOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpm.v7i2.9923

Abstract

Indonesian students’ mathematical literacy skills, particularly in algebra, are still relatively low, as shown by the results of PISA 2022. A significant contributing factor is the limited relevance of teaching materials to students’ real-life contexts. This study introduces an innovative approach by developing algebra teaching materials based on local wisdom—referred to as local wisdom literacy—as a meaningful context for improving mathematical literacy among seventh-grade junior high school students. The novelty of this study lies in the integration of traditional Timorese cultural practices, such as weaving patterns, local measurement systems, and indigenous numerical reasoning, into formal algebra instruction. Using the ADDIE development model, this Research and Development (R&D) study produced culturally embedded materials that were validated by experts, with validity scores of 85.4% for content and 85% for assessment instruments. The materials were also considered highly practical (96.93% by students, 96% by teachers) and effective, as indicated by a moderate average N-Gain of 0.42 in student learning outcomes. In addition to improving conceptual understanding and mathematical literacy, the developed materials serve as a culturally responsive pedagogical model that is in line with the objectives of the Merdeka Curriculum and supports the preservation of local culture. This study provides a contextual and humanistic alternative in algebra learning, which offers pedagogical value and cultural significance
Enhancing Numeracy of Grade VIII Students SMPK Adisucipto Kupang via Augmented Reality-Embedded Ethnomathematical Learning Samuel Igo Leton
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.v4i1.149

Abstract

This study developed Augmented Reality (AR)‑embedded ethnomathematical learning materials to enhance junior secondary students’ understanding of relations and functions. Using the ADDIE model (Analysis, Design, Development, Implementation, and Evaluations), the development integrated Timorese cultural artefacts as conceptual contexts and AR visualizations as representational support. In collecting data, we used questionnaires, interviews, and learning outcome tests. Expert validation indicated a very high level of validity (mean 87.15), while student responses (81.2%) and teacher evaluations (36/40) confirmed the practicality and classroom suitability of the materials. Effectiveness testing demonstrated substantial improvement in conceptual understanding, as reflected in pretest–posttest gains and N‑Gain scores categorized as moderate to high. The findings show that the purposeful integration of cultural contexts and AR strengthens conceptual meaning‑making, increases learning engagement, and effectively bridges students’ cultural practices with formal mathematical representations
Co-Authors Agapitus Hendrikus Kaluge ALOYSIUS JOAKIM FERNANDEZ Amsikan, Oktovianus Yongki Anggerini Horlians Ina Wonga Antonius Rewatus Apolonia Letekina Uran Apridus K. Lapenangga Benu, Cindy Ahia Pricilia Dosinaeng, Wilridus Beda Nuba Dosinaneg, Wilfridus Beda Nuba Ellen A Saubaki Faot, Elisabeth Iga Mawarni Feliksitas M. Muda Fitriani, Nelly Fransiska Meni Oeleu Gisela Elfira Mayratih Guterres, Ilda Harum, Elvadus Yovinam Henidin, Theresia Henny Angri Manafe Henrique de Fatima Marques Indira Krisanti Lengkong Irmina Veronika Uskono Kapitan, Laura V Koly, Agaripa Kristoforus Djawa Djong Laka, Anastasia Lorensa Limbu, Damita Luh Putu Ratna Sundari Luon, Maria Adriani Pulo Madar Aleksius Manoe Gawa, Maria Gracia Maria Gracia Manoe Gawa Maria J Jaiman Maria Suciati Mberu, Yuliana Bhara Meko, Maria Krisanti Meryani Lakapu Naomi Teti Ngedi1 Natalia Magdalena Rafu Mamulak Nelly Fitriani Nelly Fitriani, Nelly Ni Ketut Artanti Agustini Patrisius Batarius Pusaka, Semerdanta Putriyani Lopes, Gratia Ina Ruminah Ruminah, Ruminah Sasi, Maria Roswita Sau, Antonius Arnoldus Janssen Saubaki, Ellen A Simon Sia Niha Tule, Philipus Vincent Gaspersz W.Sogen, Paskalia Gasela Weluk, Kristina Wilfridus Beda Nuba Dosinaeng Wilfridus Beda Nuba Dosinaeng Yohana Rina Rowa Yohanes Ovaritus Jagom Yustinus Didimus Nai