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All Journal AlphaMath: Journal of Mathematics Education Jurnal Elemen Al-Jabar : Jurnal Pendidikan Matematika Scholaria: Jurnal Pendidikan dan Kebudayaan POLYGLOT Union: Jurnal Ilmiah Pendidikan Matematika JOHME: Journal of Holistic Mathematics Education Indonesian Journal of Science and Mathematics Education Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Prima: Jurnal Pendidikan Matematika M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Diklat Review : Jurnal manajemen pendidikan dan pelatihan GAUSS: Jurnal Pendidikan Matematika SEPREN: Journal of Mathematics Education and Applied Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika Range : Jurnal Pendidikan Matematika Jurnal Anugerah: Jurnal Pengabdian Kepada Masyarakat Bidang Keguruan dan Ilmu Pendidikan Pasundan Journal of Mathematics Education : Jurnal Pendidikan Matematika Mosharafa: Jurnal Pendidikan Matematika MATH-EDU: Jurnal Ilmu Pendidikan Matematika Journal of Advanced Sciences and Mathematics Education Smart Society: Community Service and Empowerment Journal Brillo Journal Edumatica: Jurnal Pendidikan Matematika JURNAL PENGABDIAN PENDIDIKAN MASYARAKAT (JPPM) Jurnal Nusantara Berbakti Jurnal Pengabdian Masyarakat Ilmu Pendidikan JNPM (Jurnal Nasional Pendidikan Matematika) IndoMath: Indonesia Mathematics Education Hexagon: Jurnal Ilmu dan Pendidikan Matematika Jurnal Pendidikan MIPA Media Pendidikan Matematika
Siahaan, Meiva Marthaulina Lestari
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Religion Agriculture, Biological Sciences & Forestry Humanities Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Sharing Session Seleksi Penerimaan Mahasiswa Baru (SNPMB) 2023 Untuk Calon Mahasiswa Baru Di SMA Negeri 1 Kefamenanu NTT Meiva Marthaulina Lestari Siahaan; Zulkaidah Nur Ahsan; Hermina Disnawati; Lidwina Felisima Tae
Jurnal Nusantara Berbakti Vol. 1 No. 4 (2023): Oktober : Jurnal Nusantara Berbakti
Publisher : Universitas Kristen Indonesia Toraja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59024/jnb.v1i4.189

Abstract

This service is based on changes in the mechanism and substance of the implementation of National Selection for Student Admissions (SNPMB). This transition is something new for prospective students and if prospective students do not understand it, it will 0certainly have a bad impact on the readiness of prospective students in participating in the implementation of UTBK-SNBT. The procedure for implementing the service is a sharing session on the implementation of SNPMB 2023, introduction and discussion of the 2023 UTBK-SNBT model questions, as well as an initial ability test on the representation of the 2023 UTBK-SNBT question model based on the latest UTBK-SNBT sub-matter. Then the socialization participants will be given a test to measure their knowledge of the SNPMB 2023 mechanism after the provision of SNPMB 2023 material. The results of this service activity are that more than 90% of prospective university students at SMA Negeri 1 Kefamenanu have understood the mechanism for implementing SNPMB 2023 after participating in the sharing session, based on the ability test, prospective university students do not fully understand the 2023 UTBK-SNBT model questions, and based on the results of the questionnaire, more than 90% of sharing session participants gave a good response to this activity. The results of this activity are important as a measure of understanding of the SNPMB 2023 mechanism and provide an overview of the initial ability of prospective students to answer UTBK 2023 model questions so that follow-up can be known in accordance with these abilities.
A design based research study on differentiated integer instruction using diagnostic assessment Siahaan, Meiva Marthaulina Lestari; Fitriani; Laja, Yosepha Patricia Wua; Hijriani, Lailin
Al-Jabar: Jurnal Pendidikan Matematika Vol 17 No 1 (2026): Al-Jabar : Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ajpm.v17i1.30329

Abstract

Purposes: This study aims to design instruction for integer learning using the GASING method based on learning needs. Method: The participants were 79 fifth-grade students from three schools in a sub-district. The study employed design-based research in three phases; preliminary design, teaching experiment, and retrospective analysis. Data were analyzed through cognitive diagnostic assessment, skills analysis, and error analysis to identify students’ learning needs and develop learning instruction. Findings: The findings revealed that most students were at the cognitive levels of remembering and understanding when solving problems related to integer properties, number order, place value, and contextual situations. Their numeracy literacy skills were generally low, and they demonstrated conceptual, procedural, and operational errors. Based on these diagnostic results, a learning design using the GASING method supported by interactive visual aids was developed. The design emphasizes number sequences through number lines, ascending and descending order, comparing integers, and solving contextual problems involving ordered numbers. For the concept of place value, the design includes activities such as comparing integers, reading and constructing numbers, understanding integer properties, and determining place value. Significance: These findings suggest that teachers should integrate context-based instruments into daily classroom instruction to strengthen students’ conceptual understanding and problem-solving skills.
Demonstrasi Alat Peraga Matematika Pada Siswa/Siswi Sekolah Dasar Kiupukan Ladja, Yosepha Patricia Wua; Naimnule, Maria; Bete, Hendrika; Siahaan, Meiva Marthaulina Lestari
Jurnal Pengabdian Masyarakat Ilmu Pendidikan Vol. 5 No. 2 (2026): May 2026
Publisher : Fakultas Keguruan dan Ilmu Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpm-ip.vol.5i.2.1721

Abstract

This article describes the results of community service activities targeting students of Kiupukan State Elementary School, with the goal of enabling teachers to utilize varied and engaging learning media, such as concrete materials, to enhance mathematics learning outcomes. The concrete media used were teaching aids in the form of number rulers and number cards on the topic of integers. The number line and number cards were chosen as an alternative to overcome the problem, because they can help students understand the addition and subtraction of integers. In addition, they can also concretize the addition and subtraction of integers, which are abstract concepts. This research method was implemented through several stages, namely the preparation stage, implementation, and evaluation of the activity. The results of this community service activity were an increase in students' understanding at SDN Nispukan from a score of 22 before the activity to 77.8 after the activity. While at SDK, Kiupukan went from a score of 22 to 60.4. This Community Service activity needs to be carried out further on other abstract mathematics topics, but still using teaching aids.
STEM-integrated project-based learning: Students’ critical thinking skills in trigonometry Kristoforus Nofenaris Agung; Meiva Marthaulina Lestari Siahaan; Rika Handayani; Lailin Hijriani
Journal of Advanced Sciences and Mathematics Education Vol. 6 No. 1 (2026): Journal of Advanced Sciences and Mathematics Education
Publisher : CV. FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/jasme.v6i1.972

Abstract

Background: This study was motivated by the importance of critical thinking skill in solving problem and making the decision. In addition, low level of students’ critical thinking skills issue in mathematics learning, particularly in trigonometry Aims: To address this issue, a STEM-integrated Project-Based Learning (PjBL-STEM) model was implemented. Method: This study employed a mixed-method approach combining quantitative and qualitative data. The sample consisted of 50 tenth-grade students at SMA Negeri Manufui, divided into an experimental class; 25 students and a control class; 25 students. Data were collected through a critical thinking skills test, student response questionnaires, and interviews. Results: The results of the independent samples t-test showed a significant difference between the experimental and control classes (Sig. = 0.001 < 0.05). The mean posttest score of the experimental class (52.83) was higher than that of the control class (45.33). The N-Gain analysis indicated a low improvement category in both classes; however, the experimental class (26.29%) showed a higher increase compared to the control class (4.50%). Student responses toward the PjBL-STEM implementation were highly positive, with more than 90% agreement. Qualitative findings revealed that project-based experiences helped students recall concepts, identify reasoning errors, and reflect on problem-solving processes. Conclusion: STEM-integrated PjBL model was effective in improving students’ critical thinking skills and fostering active, collaborative, and meaningful learning. Continuous implementation supported by structured guidance and critical thinking exercises is recommended to achieve more optimal learning outcomes.
Numeracy Training: Applying Jarimatika Method in Elementary School Students of Border Area Nunpene East Nusa Tenggara Lailin Hijriani; Meiva Marthaulina Lestari Siahaan; Justin Eduardo Simarmata; Yeni Missa; Margarita Tampani; Nelciana Talan
Smart Society Vol. 2 No. 1 (2022): Smart Society
Publisher : FOUNDAE (Foundation of Advanced Education)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/smartsociety.v2i1.101

Abstract

The numeracy skill of elementary school students in border area Nunpene East Nusa Tenggara is still relatively low. This is caused by the students’ habit use counting aid such as calculators. Therefore, it is necessary to have a Lecturer activity in the community to help elementary school students which aim to improve their numeracy skills. Because mathematics teaches various skills, one of which is counting. So that the ability to count is a fundamental thing that must be mastered by students when they learn mathematics. One of learning method that can be done to improve students' numeracy skills is by applying the Jarimatika method which involves the students' own organs directly. Indirectly cognitive and psychomotor abilities will develop simultaneously so as to increase the efficiency of students' counting speed. As for the steps of the service, the method are including the introduction of the counting method, assistance during the learning process, then providing an evaluation. The results of this training are that after the training, it can be seen from the posttest results that students have increased their numeracy skills using the Jarimatika method. As well as increasing the knowledge of mathematics teachers regarding the use of the Jarimatika method as an alternative method of numeracy
Comprehending Relations and Functions: Introducing and Demonstrating Papan Resi Teaching Aid Meiva Marthaulina Lestari Siahaan; Lailin Hijriani; Talisadika Maifa; Yosepha Patricia Wua Laja; Yohanis Ndapa Deda
Smart Society Vol. 2 No. 2 (2022): Smart Society
Publisher : FOUNDAE (Foundation of Advanced Education)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/smartsociety.v2i2.103

Abstract

The teachers need help to convey the differences between relations and functions and to make concrete examples. The purpose of the community service team is to help students find and comprehend the theory and concept about relations and functions material for grade 8 by introducing and demonstrating the Papan Resi visual aid.The service held in SMPK Aloysius Niki-Niki, Timor Tengah Utara District, Nusa Tenggara Timur. The service method is based on action research: planning, action, observation, and reflection. The data are collected based on the audiences' observation sheets and response sheets. Data analysis used data triangulation. The results of this community service are that introducing and demonstrating Papan Resi could be beneficial for increasing students' comprehension of SMPK Aloysius Niki-Niki. The constructivist situation influences it, and the service needs to be held for other teaching aids
Development of an Open-ended Numeracy Literacy Instrument: Context of Timorese Culture Meiva Marthaulina Lestari Siahaan; Cecilia Novianti Salsinha; Hendrika Bete; Lailin Hijriani
AlphaMath : Journal of Mathematics Education Alphamath: Vol. 12, No. 1, May 2026
Publisher : Department of Mathematics Education, Universitas Muhammadiyah Purwokerto, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/alphamath.v12i1.30429

Abstract

Addressing complex problems requires multiple and sustainable solution strategies, highlighting the importance of students’ numeracy literacy. However, existing assessment practices often fail to capture students’ higher-order thinking and problem-solving flexibility, particularly in algebraic contexts. An open-ended, locally wisdom–based instrument is considered appropriate for fostering students’ problem-solving abilities; however, it is rarely implemented in regular classroom instruction. Furthermore, research on the development of open-ended numeracy literacy instruments within Timorese culture remains limited. This study aims to develop and validate an open-ended numeracy literacy instrument in the algebra domain to address this gap. The study employed a design-based development approach using Tessmer’s formative evaluation, which includes preliminary study, expert review, one-to-one, small-group, and field-test stages. Qualitative data were obtained from expert validation, student feedback, and interviews, while quantitative data were collected through student response questionnaires and test results. The findings reveal that the developed instrument meets the criteria of validity, practicality, and reliability. Furthermore, the instrument demonstrates moderate difficulty and acceptable discrimination, indicating its effectiveness in distinguishing students’ abilities. This study contributes a valid and reliable open-ended assessment tool that can support the enhancement of students’ numeracy literacy and promote meaningful mathematics learning in algebra.
Analysis of vector space content for developing a Prezi-integrated linear algebra module: Enhancing elementary algebra learning Meiva Marthaulina Lestari Siahaan; Fitriani Fitriani; Siska Nopa Br. Tambunan
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 2 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i2.17315

Abstract

The research aims to analyze vector content material and produce teaching materials that are valid, practical, and effective. The research method used is Alessi and Trollip's development research, which consists of three stages: planning, design, and development. The results of this research indicate that the vector space materials developed for teaching include vectors in R2, R3, and Rn, line and plane parameter equations, dot products and cross products, as well as line and plane coordinate equations in R3. The module assessment from two material experts was 3.33, indicating it is very feasible, while from two media experts it was 3.9625, also indicating it is very feasible. The benefits of this product in supporting students' understanding of vector space material include the composition of the material being based on an in-depth analysis of the textbooks used, relevant sources, and student test results from the previous three years. This approach helps students comprehend vector space, as the module presents relevant images to support the explanations. Additionally, the material in the module is integrated with Prezi, which helps to capture students' interest and encourages them to focus on the explanations. In conclusion, the developed teaching materials are effective in enhancing students' understanding of vector space concepts and are highly feasible for use in educational settings.
MENINGKATKAN KEMAMPUAN LITERASI MEMBACA DAN LITERASI NUMERASI DENGAN GIAT LITERASI BERTEMA GASING Meiva Marthaulina Lestari Siahaan; Zulkaidah Nur Ahzan; Fitriani Fitriani; Hesni Neno; Prudensius Manek; Yuliana Serli Danul; Rut Tae
Jurnal Pengabdian Pendidikan Masyarakat (JPPM) Vol 4 No 2 (2023): Jurnal Pengabdian Pendidikan Masyarakat Vol 4 No 2 (2023)
Publisher : LPPM UNIVERSITAS MUHAMMADIYAH MUARA BUNGO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52060/jppm.v4i2.1427

Abstract

This community service activity was held according to situation analysis and problems that occurred at SD Negeri Sasi Kefamenanu, East Nusa Tenggara. The main problem is the low ability of students to solve problem in reading numeracy literacy in AKM model. This service method is a service-learning method with the aim of improving students' reading literacy and numeracy literacy skills through GASING-themed literacy activities and increasing student motivation in learning through GASING-themed literacy activities. The results of the service activities show 1) students' initial ability to work on reading literacy and numeracy literacy questions as seen from the average percentage value of 54.10%, 2) providing GASING-themed reading literacy activities in the form of providing props in the form of letter trees, paragraph puzzles, providing GASING-themed numeracy literacy activities in the form of providing props in the form of number cards, pattern cards, and number paper, 3) students' ability to work on reading literacy and numeracy literacy questions after receiving GASING-themed literacy activities as seen from the average percentage value of 78. 70%, and 4) understanding the material conveyed through GASING-themed literacy activities, the service team provides a quick and easy way to solve literacy problems, students are also enthusiastic when the service team conveys the material, students also feel that the service team is guiding students in solving problems, students also feel excited in participating in activities, students feel interested in this activity and are willing to take part in similar activities. This indicates that this activity is beneficial for students and motivates students in learning to develop their literacy skills.
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.
Co-Authors Ahsan, Zulkaidah Nur Ahzan, Zulkaidah Nur Aloisius Loka Son Amsikan, stanislaus - Angelika Rosa Da Lima Leli Astriani Dewi, Ni Putu Yuni Bete, Hendrika Cecilia Novianti Salsinha Damianus Dao Samo Danul, Yuliana Serli Deda, Yohanis Ndapa Deni Taniu Dominifridus Bone E. Elvis Napitupulu Eduardus Beo Seso Delvion Elin, Lailin Hijriani Elvira Riyani Mau Naifio Emily Johnson Ermelinda Nainahas Farida Daniel Fitriani Fitriani Fitriani Fitriani Fitriani Funan, Fedelia Gusti Firda Khairunnisa Handayani, Rika Hermina Disnawati, Hermina Hesni Neno Hesni Neno Hesni Neno, Hesni Hijriani, Lailin Hijriani, Lailin Juliana Mehelina Herlince Nenohai Klau, Kondradus Yohanes Klau, Maria Fransineti Hoar Kondradus Yohanes Klau Kristoforus Nofenaris Agung Kurnia Putri Sepdikasari Dirgantoro Ladja, Yosepha Patricia Wua Lailin Hijriani Leli, Angelika Rosa Da Lima Lidwina Felisima Tae Lidwina Felisima Tae LUDGARDIS LEDHENG Maifa, Talisadika Serrisanti Manek, Prudensius Margarita Tampani Melda J Saragih Melda Jaya Saragih, Melda Jaya Merlin Helentina Napitupulu Minanur Rohman mone, ferdinandus Naifio, Elvira Riyani Mau Naimnule, Maria Nelciana Talan Oce Datu Appulembang, Oce Datu Patrisius Nulle Priska Antonia Naikofi Prudensius Manek Prudensius Manek Rika Handayani Riny Oktora Purba Rut Tae Rut Tae Selestina Nahak Septianingsi Manekat Simamarta, Justin Eduardo Simarmata, Justin Eduardo Siska Nopa Br. Tambunan Solo, Maria Fransiska Venidora Tae, Rut Tamba, Kimura Patar Toni, Albertus Toni, Albertus - Wua Laja, Yosepha Patricia Yeni Missa Yohanes Jefrianus Kehi Yosepha P. W. Laja Yuliana Serli Danul Yuliana Serli Danul Zulkaidah Nur Ahsan Zulkaidah Nur Ahzan Zulkaidah Nur Ahzan