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All Journal Jurnal Sains dan Teknologi AKSIOMA: Jurnal Program Studi Pendidikan Matematika JOIV : International Journal on Informatics Visualization ZERO : Jurnal Sains, Matematika dan Terapan BAREKENG: Jurnal Ilmu Matematika dan Terapan JURNAL PENELITIAN PENDIDIKAN MIPA Zero : Jurnal Sains, Matematika, dan Terapan JISTech (Journal of Islamic Science and Technology) JURNAL PENDIDIKAN TAMBUSAI Jurnal Cendekia : Jurnal Pendidikan Matematika Journal on Education MAJU : Jurnal Ilmiah Pendidikan Matematika JOURNAL OF SCIENCE AND SOCIAL RESEARCH JURNAL MATHEMATIC PAEDAGOGIC MAJAMATH: Jurnal Matematika dan Pendidikan Matematika SAP (Susunan Artikel Pendidikan) JCRS (Journal of Community Research and Service) AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Eduscience (JES) Indonesian Journal of Education and Mathematical Science G-Tech : Jurnal Teknologi Terapan Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Didactic Mathematics Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Jurnal Abdimas Kartika Wijayakusuma Indo-MathEdu Intellectuals Journal Journal of Mathematics and Scientific Computing With Applications Journal of Information Systems and Technology Research Jurnal MathEducation Nusantara Jurnal Ilmiah Ilmu Terapan Universitas Jambi International Journal of Educational Research Excellence (IJERE) Majalah Ilmiah METHODA Jurnal Penelitian Pendidikan MIPA Jurnal Pengabdian Masyarakat dan Riset Pendidikan SAMBARA: Jurnal Pengabdian Kepada Masyarakat Media Pendidikan Matematika Edumaspul: Jurnal Pendidikan
Dedy Juliandri Panjaitan
Universitas Muslim Nusantara Al-Washliyah
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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PEMODELAN MATEMATIKA TERHADAP KECANDUAN GAME ONLINE BERDASARKAN MODEL SEIRS PADA BERBAGAI KELOMPOK USIA DI INDONESIA Siregar, Annisa Fadhillah Putri; Firmansyah, Firmansyah; Panjaitan, Dedy Juliandri
Majalah Ilmiah METHODA Vol. 14 No. 1 (2024): Majalah Ilmiah METHODA
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/methoda.Vol14No1.pp87-92

Abstract

The mathematical model can be used to analyze many real-life problems. One of them is the case of online game addiction, which is currently rampant in Indonesia. This research will analyze the SEIRS mathematical model in the case of online game addiction experienced by various age groups. The purpose of this research is to understand mathematical modeling based on the SEIRS model for cases of online game addiction in various age groups in Indonesia. The result of this research is the mathematical model, which is , S(0) = 17; E(0) = 25; , I(0) = 6; and , R(0) = 2.
Analisis Kecanduan Menonton YouTube pada Anak Balita Menggunakan Model SEIEdR Sukmana, Eko Akbar; Firmansyah, Firmansyah; Panjaitan, Dedy Juliandri
Majalah Ilmiah METHODA Vol. 14 No. 2 (2024): Majalah Ilmiah METHODA
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/methoda.Vol14No2.pp157-165

Abstract

In contemporary society, YouTube addiction in children under five has become an increasingly troubling problem. The purpose of this study is to solve the addiction problem and provide solutions that can be applied in the workplace. A modified SEIEdR (Suspectible-Exposed-Infected-Education-Recovered) model for YouTube watching addiction behavior is used. Identifying assumptions and parameters, creating mathematical models, finding equilibrium points, calculating the basic reproduction number (R0), conducting model stability analysis, and performing simulations using Maple software are all methodological processes. The main findings show that if R0 < 1, the addictive behavior of watching YouTube will decrease over time and will become endemic. In addition, the individual rate values of active and novice viewers who are educated have a significant effect on reducing the population of novice and active YouTube viewers. These simulation results improve our understanding of the dynamics of YouTube viewing addiction and offer practical solutions to this problem.
ANALISIS MODEL MATEMATIKA SEIRS TERHADAP KECANDUAN GAME ONLINE SISWA SMPN 3 MANDREHE BARAT Waruwu, Nove Susanti; Panjaitan, Dedy Juliandri; Firmansyah, Firmansyah
Majalah Ilmiah METHODA Vol. 14 No. 1 (2024): Majalah Ilmiah METHODA
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/methoda.Vol14No1.pp105-113

Abstract

This research uses documentation and experimental methods. The documentation method is used to create and develop the SEIRS model in cases of online game addiction. Meanwhile, the experimental method is a research method to find answers or solutions to a case or research object. This research was conducted on students in class VIII UPTD SMP Negeri 3 Mandrehe Barat with a total of 26 students within 14 days. In this study, researchers modeled cases of online game addiction into the SEIRS model using the 5th-order Runge-Kutta method so that its effectiveness was obtained based on the data obtained. The results of this study show that the Runge Kutta method is the most effective in the Seirs mathematical model for online game addiction.
Development of Augmented Reality Media for Local Wisdom Learning Sapta, Andy; Risnawati, Erna; Panjaitan, Dedy Juliandri; Marisa, -; Nisa, Uliya Khoirun
JOIV : International Journal on Informatics Visualization Vol 9, No 4 (2025)
Publisher : Society of Visual Informatics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62527/joiv.9.4.4359

Abstract

Indonesia, as an archipelago, has much local wisdom. Teaching local wisdom materials in Indonesia so far tends to use images or videos that are not interactive. This medium has limitations in terms of student involvement. Therefore, it is necessary to develop learning media that can effectively display local wisdom from various cultures. This research uses the Research and Development method to develop Augmented Reality applications. Augmented Reality Local Wisdom: This research developed local wisdom in Indonesia, including the Batak, Javanese, Sundanese, and Betawi tribes. Material culture encompasses traditional clothing, vernacular architecture, indigenous weapons, and regional motifs. The research population comes from the provinces of North Sumatra, Jakarta, West Java, and Yogyakarta. This study's research product involves developing a project-based learning model grounded in local wisdom and supported by Augmented Reality. The development results show that using Augmented Reality in learning, particularly through the project-based learning model, is beneficial because it helps students describe material culture more effectively. This study suggests that students can become more engaged and interactive in their learning. Additionally, using Augmented Reality, students can explore culture more contextually, enhance their problem-solving skills, and reduce the time and costs associated with learning about local culture. The use of AR in local wisdom-based learning could be an innovative solution to enhance the quality of education and cultural preservation in the digital age.
DEVELOPMENT OF MATHEMATICS LEARNING USING BATAK CULTURE- BASED MEDIA IN INDONESIA Dedy Juliandri Panjaitan; Firmansyah Firmansyah; Andy Sapta; Rima Aprilia; Annisa Fadhillah Putri Siregar
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 3 (2025): Volume 9, Nomor 3, September 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i3.43196

Abstract

This study aims to develop Batak culture-based domino card learning media to enhance students’ interest and academic achievement in three challenging mathematics topics: trigonometry, integer operations, and logarithms. The research explores how local cultural values, specifically the Batak kinship philosophy Dalihan Na Tolu, can be meaningfully integrated into mathematics instruction. Employing a design-based research (DBR) approach, the study was conducted in seven schools across North Sumatra Province, Indonesia. The development process encompassed media design, expert validation, classroom implementation, and iterative refinement. Instruments utilized included teacher interviews, classroom observations, student questionnaires, and achievement tests. The findings indicate that integrating Dalihan Na Tolu values into game- based learning media provides culturally resonant analogies that enhance students’ understanding of abstract mathematical concepts. In trigonometry, visual and cultural representations helped students distinguish among triangle elements and apply ratio concepts in problem-solving. In the context of integer operations, the domino gameplay facilitated students’ comprehension of signed numbers through contextual scenarios such as altitude and temperature changes. For logarithms, visual simulations and matching exercises supported students in grasping the inverse relationship between exponents and logarithmic expressions. The application of culturally contextualized game-based media not only improved students’ comprehension across all three mathematical topics but also significantly increased their engagement and interest in learning. These findings suggest that incorporating local cultural values into instructional tools can offer an innovative and effective model for advancing mathematics education, particularly in culturally diverse contexts.
The influence of metacognitive strategies on students’ mathematical connection abilities and learning independence Hasibuan, Nurleli; Firmansyah, Firmansyah; Panjaitan, Dedy Juliandri; Zahari, Cut Latifah
Journal of Didactic Mathematics Vol 6, No 2 (2025): August
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jdm.v6i2.2744

Abstract

Mathematical connection skills and learning independence remain challenges in the formal education system, particularly among students who rely heavily on procedural memorization rather than deep conceptual understanding. This situation underscores the necessity of developing learning strategies that promote critical thinking awareness and reflection. One such strategy is the application of metacognitive techniques. This study seeks to assess the impact of metacognitive strategies on the development of mathematical connection skills and learning independence among eighth-grade students enrolled in the mathematics department at Al Washliyah Hamparan Perak Private Middle School. Employing a quantitative approach with a quasi-experimental pretest-posttest control group design, the study sample comprises two classes: an experimental group that receives instruction utilizing metacognitive strategies and a control group that receives conventional instruction. The analysis of the data revealed a substantial positive impact of metacognitive strategies on both mathematical connection skills and learning independence. Specifically, the experimental group demonstrated a significant improvement in mathematical connection skills (significance 0.000 < 0.05) and learning independence (significance 0.001 < 0.05). The average gain score for mathematical connections was 0.54735 for the experimental group and 0.28264 for the control group. Similarly, the average gain score for learning independence was 0.39870 for the experimental group and 0.19518 for the control group. Consequently, metacognitive strategies have been demonstrated to be an effective tool for enhancing both mathematical connection skills and learning independence. Their implementation in the formal education system is crucial in fostering critical thinking, self-awareness, and independent learning among students.
Vehicle Routing Problem as a Solution for Determining Goods Delivery Routes PT. Kreasi Beton Nusa Persada Panjaitan, Dedy Juliandri; Aprilia, Rima; Anjeli, Sarifah
JST (Jurnal Sains dan Teknologi) Vol. 12 No. 3 (2023): Oktober
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v12i3.67809

Abstract

VRP distributions have had difficulty overcoming the problem of finding channels with minimal depots to locations that have different places with different total demand. The purpose of this study is to analyze the problem of transportation routes in the distribution of products obtained from the initial location of distribution to users. This type of research is qualitative research. This research was conducted at PT. Nusa Persada Concrete Creations. The Nearest Neighbor method is used to determine the distribution of routes. The Local Search method is carried out to evaluate and improve the distribution of routes carried out at the beginning with the Nearest Neighbors method. The data analysis process consists of several stages with the Nearest Neighbor method and the LocalSearch method. The results of the study, namely the Model Vehicle Routing Problem (VRP) applied in determining ready mix delivery routes at PT. Nusapersada Concrete Creation using nearest and local neighbor methods. Vehicle Routing Problem (VRP) models using nearest and local neighbor methods can be used applied in determining ready mix delivery routes to limited companies. Nusapersada Concrete Creations. This makes distance and time more effective, as well as more cost efficient. New routes generated This is a route improvement solution that PT. The application of the Nusapersada Concrete Creations model results in a new route that reduces the distance closer, faster completion time, and fuel cost savings for truck vehicles compared to the initial route. This makes distance and time more effective, as well as more cost efficient.
ANALYSIS OF STUDENTS' MATHEMATICAL CRITICAL THINKING SKILLS ON STATISTICS MATERIAL IN MIDDLE SCHOOL Dahlia, Dahlia; Panjaitan, Dedy Juliandri
JURNAL EDUSCIENCE Vol 11, No 1 (2024): Jurnal Eduscience (JES), (Authors from Nigeria, India, and Indonesia)
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jes.v11i1.5607

Abstract

The purpose of the research conducted by the author was to describe the analysis of students' mathematical critical thinking skills conducted in class VIII-1 on statistics material. The type of research used in this research is qualitative research with a descriptive approach. In this study, data was collected by giving written tests of critical thinking skills and interviews. The results of this study were that subjects in the high category were able to correctly fulfill all indicators of mathematical critical thinking ability, subjects in the medium category were able to carry out 3 indicators of mathematical critical thinking ability, and subjects in the low category were only able to carry out 1 indicator. Based on the results of the analysis of data processing, the data processing of the results of student answers shows that the average acquisition of written test questions is 51.38%. The conclusion is that the mathematical critical thinking skills of class VIII-1 students of SMP Negeri 22 Medan are classified as low. Therefore, the mathematical critical thinking skills of class VIII-1 students of SMP Negeri 22 Medan still need further training so that they can be improved.Keywords: Critical Thinking Ability; StatisticsAbstrak Tujuan penelitian yang dilakukan penulis adalah untuk mendeskripsikan analisis kemampuan berpikir kritis matematis siswa yang dilakukan di kelas VIII-1 pada materi statistika. Jenis penelitian yang digunakan dalam penelitian ini adalah penelitian kualitatif dengan pendekatan deskriptif. Dalam penelitian ini data dikumpulkan melalui pemberian tes tertulis kemampuan berpikir kritis dan wawancara.  Hasil penelitian ini adalah Subjek dalam kategori tinggi mampu memenuhi semua indikator kemampuan berpikir kritis matematis dengan benar, subjek dalam kategori sedang mampu melaksanakan 3 indikator kemampuan bepikir kritis matematis, dan subjek dalam kategori rendah hanya mampu melaksanakan 1 indikator saja. Berdasarkan hasil analisis pengolahan data, pengolahan data hasil jawaban siswa menunjukkan rata-rata perolehan hasil soal tes tertulis adalah 51,38%. Kesimpulannya adalah kemampuan berpikir kritis matematis siswa kelas VIII-1 SMP Negeri 22 Medan tergolong rendah. Oleh karena itu, kemampuan berpikir kritis matematis siswa kelas VIII-1 SMP Negeri 22 Medan masih perlu dilatih lebih lanjut agar dapat ditingkatkan.Kata Kunci: Kemampuan Berpikir Kritis; Statistika
Development of Problem-Based Learning Devices to Improve Mathematics Problem Solving Ability and Learning Independence of Labuhanbatu Private Junior High School Students Sudirman; Dedy Juliandri Panjaitan
International Journal of Educational Research Excellence (IJERE) Vol. 2 No. 2 (2023): July-December
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/ijere.v2i2.553

Abstract

This development research generally aims to develop problem-based learning tools that are valid, practical and effective, in particular the objectives are to : 1) Produce product development problem-based learning tools that are valid, practical and effective in improving students' mathematical problem solving skills and independence . 2) Analyzing the increase in students' mathematical problem solving abilities in the application of problem-based learning tools. 3) Analyze the level of student learning independence in the application of learning tools. The researcher gave pretest questions to students to see students' initial abilities before being given the learning tools that had been developed. The data obtained from the results of the pretest and posttest were analyzed to find out how much the increase in students' learning independence abilities occurred. Testing of the assessment instrument was carried out at the beginning (pretest) and at the end (posttest) of the meeting. This learning tool was developed using a development model referring to Plomp's theory, which consists of five phases, namely the initial investigative research phase, the design phase, the design phase, the assessment phase and the implementation phase (trial). LKPD is another tool that was developed using a problem-based learning model for problem-solving abilities and participants' independent learning abilities that can be said to be effective, valid and practical.
Pemodalan Matematika: Meningkatkan Kemampuan Pemecahan Masalah pada Siswa Sekolah Dasar di SDN 066048 Medan Helvetia Hasibuan, Nurleli; Firmansyah, Firmansyah; Panjaitan, Dedy Juliandri
Jurnal Pendidikan Tambusai Vol. 8 No. 1 (2024): April 2024
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v8i1.14489

Abstract

Penelitian ini bertujuan untuk menyelidiki penggunaan pemodelan matematika sebagai pendekatan pembelajaran untuk meningkatkan kemampuan pemecahan masalah aritmatika sosial siswa sekolah dasar di SDN 066048 Medan Helvetia. Dengan mengintegrasikan pemodelan matematika ke dalam kurikulum matematika, penelitian ini mengeksplorasi efektivitas pendekatan pembelajaran ini dalam memberikan pengalaman pembelajaran yang lebih konkret dan kontekstual bagi siswa. Metodologi penelitian yang digunakan melibatkan tinjauan pustaka, desain eksperimental, dan analisis data empiris. Hasil penelitian menunjukkan bahwa penggunaan pemodelan matematika memiliki dampak positif yang signifikan terhadap pemahaman siswa tentang konsep matematika dan kemampuan mereka dalam memecahkan masalah aritmatika sosial. Implikasi dari penelitian ini mencakup rekomendasi untuk memperluas penggunaan pendekatan pemodelan matematika dalam pembelajaran matematika di sekolah dasar serta pengembangan strategi pembelajaran yang lebih efektif dan relevan dengan kebutuhan siswa.
Co-Authors Adinda Kinanti Alistraja Dison Silalahi Andy Sapta Anjeli, Sarifah Anjelia Tarigan Annisa Fadhillah Putri Siregar Aprilia, Rima Atika Erlina Nasution Azmi Arief Sinaga Bahri, Saiful Batu, Siti Sadar Sulastri Lumban Br Tarigan, Dinda Renita Carissa Ghaniya Azzahra Carissa Ghaniya Azzahra Dahlia Dahlia Dahlia Dahlia Darmiati Darmiati Della Arsita sari Desi Syahfitri Dewi Fitria Dewi Nur Hasanah Ellysa Syahfitri Elsadday Br Manalu Elvi Syahara Lubis Evi Julyana Nasution Fayed, Heba A. Firmansyah Firmansyah Firmansyah Firmansyah Firmansyah Firmansyah Francisca, Onatri Gultom, Anastasya L. Hari Munandar Haryati Ahda Nasution Hasanah Hasanah Hasibuan, Nurleli Hema Pebria Rollingka Hidayat Hidayat Hilza Karyawati Indriani Husna, Wilia Indah Widya Hanzani Ismail Husein, Ismail Kartolo, Rahmad Kristina Intan Parulian Panjaitan Kusyani, Diah Liza, Tasya Dwi Lubis, Lailan Syafira Putri Madyunus Salayan Madyunus Salayan, Madyunus Mahyuni Br Damanik Marisa, - Mega Putri yani Muhammad Iqbal Fahri Muhammad Iqbal Fahri Muhammad Ridwan Muhammad Ridwan Naibaho, Mesni Harianty Nasution, Amanda Syahri Neni Triana, Neni Nisa Khairani Nurdalilah Nurdalilah Nurdalilah Nurdalilah Nurdiono Nurdiono Nurhafni Siregar Nurhalizah, Siti Nuriman Astuti Batubara Nurlela Nurlela Nurmairina Pesta Rut Cahaya Sitanggang Putri, Annisa Fadhillah Rakhmawati, Fibri Ramadhani Ramadhani Rangkuti, Sakdiah Aini Rennika Irfenti Seprina Simorangkir Resti Yolanda Rima Aprilia Rima Aprilia Rina Filia Sari Rina Filia Sari, Rina Filia Rina Widyasari Rina Widyasari Risnawati, Erna Rita Destini Rizki Rahmadani Rizki Rahmadani Siregar Sagala, Pehulysa Saiful Bahri Sapta, Andy Saragih, Agung Evansiyus Saragih, Jenri Hamonangan Sari, Dwi Novita Sekar Ayu Irawan Silalahi, Alistraja Dison Simbolon, Nurarfah H Sipahutar, Tuti Sumyati Siregar, Aisyah Siregar, Annisa Fadhillah Putri Siti Aisyah Sri Ulfa Rahayu Sudirman Sudirman Sukmana, Eko Akbar Syahara Lubis, Elvi Syahfitri, Lely Tarigan, Anjelia Taripar R Sihaloho Uliya Khoirun Nisa Waruwu, Nove Susanti Yessy Novalia Yovita Ningtias Yuki Indayanti Yuniar, Nana Yusnita, Nora Zahari, Cut Latifah Zebua, Mesra Belinda