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Junaidi, S.Pd., M.Pd.
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l. Majapahit No. 62 Mataram, Nusa Tenggara Barat, Indonesia Lantai 2 gedung E, Program Studi S1 Pendidikan Matematika, FKIP Universitas Mataram
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Mandalika Mathematics and Educations Journal
Published by Universitas Mataram
ISSN : 27158292     EISSN : 27151190     DOI : 10.29303/jm
Core Subject : Education,
Mathematics
Mandalika Mathematics and Education Journal adalah Jurnal Matematika dan Pendidikan Matematika yang dikelola oleh Program Studi S1 Pendidikan Matematika FKIP Universitas Mataram. Fokus dan ruang lingkup dari jurnal ini adalah artikel ilmiah baik berupa hasil penelitian, review artikel maupun kajian pustaka khusus bidang Matematika dan Pendidikan Matematika.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 40 Documents
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Search results for , issue "Vol 7 No 3 (2025): Edisi September" : 40 Documents clear
Optimasi Vehicle Routing Problem (VRP) Terhadap Rute Pengangkutan Sampah Di Kota Medan Dengan Algoritma Ant Colony Optimization Kinanti, Tri; Rima Aprilia
Mandalika Mathematics and Educations Journal Vol 7 No 3 (2025): Edisi September
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i3.9787

Abstract

The growing population in Medan City has resulted in a significant increase in waste volume, creating the need for an efficient transportation system from Temporary Disposal Sites (TPS) to the Final Disposal Site (TPA). This study aims to apply the Ant Colony Optimization (ACO) algorithm to improve the efficiency of waste collection routes in the Medan Marelan District. ACO is a metaheuristic algorithm inspired by the foraging behavior of ants, where pheromone trails guide route selection. In this research, TPS and TPA locations were divided into six zones. Each zone was analyzed to determine the most efficient route based on the shortest travel distance. The research methodology consists of two main phases: route construction and pheromone updating. Data analysis was conducted manually for the first zone and through computational simulations using Python for the remaining five zones. The results show that ACO effectively produced optimal waste transportation routes in all areas. The shortest routes obtained were: Zone 1 at 17.05 km, Zone 2 at 25.25 km, Zone 3 at 16.995 km, Zone 4 at 8 km, Zone 5 at 14.83 km, and Zone 6 at 11.5 km. These findings confirm that the ACO algorithm is effective in addressing the Vehicle Routing Problem (VRP) in the context of waste transportation and offers a promising approach for enhancing urban waste management systems.
Optimisasi Rute Distribusi Gas LPG 3 Kg Pada PT Arafizza Sikumbang Menggunakan Model VRP dan Algoritma Clarke and Wright Savings Fani Indriyani Ningsih; Rina Filia Sari
Mandalika Mathematics and Educations Journal Vol 7 No 3 (2025): Edisi September
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i3.9835

Abstract

This study aims to optimize the distribution of 3 kg LPG cylinders at PT Arafizza Sikumbang, Medan Selayang District, Medan City. Efficient distribution is important to prevent shortages and reduce operational costs. The company serves 12 bases using Colt Diesel vehicles. The Vehicle Routing Problem (VRP) model with the Clarke and Wright Savings Algorithm was applied to improve delivery route efficiency. The data used was secondary data from December 2024, including distribution center locations, demand, vehicle capacity, and transportation costs, processed using Google Maps API and Microsoft Excel to create distance matrices and savings matrices. The initial route of 110.1 km with a cost of Rp 74,868 was successfully optimized to 90.9 km and Rp 61,812, achieving savings of 17.44% in distance and 17.4% in cost. These results demonstrate the effectiveness of the algorithm in improving LPG distribution efficiency and are relevant for application in similar logistics cases.
Eksplorasi Etnomatematika Aksara Lontara dalam Pembelajaran Matematika Jenjang Sekolah Menengah Pertama Sudarmin; Kusumayanti, Andi; Baharuddin; Nurul Rezky
Mandalika Mathematics and Educations Journal Vol 7 No 3 (2025): Edisi September
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i3.9603

Abstract

Lontara script in ethnomathematics study can provide a deep understanding of the relationship between mathematics and local culture of the community and with the ethnomathematics approach provides opportunities for students in the culture and principles of mathematics contained in Lontara script. The purpose of this study is to explore the mathematical concepts contained in Lontara script. This type of research is qualitative with an ethnomathematics approach. Data collection techniques used are observation, interviews and documentation. Testing the validity of the data used is technical triangulation. Data analysis techniques used are data reduction, data presentation and drawing conclusions. The results of this study indicate that Lontara script has mathematical elements such as the concept of sets, geometry concepts and number concepts found in the elements of Lontara script at the Balla Lompoa Museum, Gowa Regency, South Sulawesi. In addition to mathematical aspects, Lontara script supports efforts to preserve culture in Bugis-Makassar and as a reflection of the richness of culture in Indonesia that can be linked to the concept of learning mathematics. The implications of this study are not only to enrich insight in the form of literature but also to contribute as an alternative approach to learning mathematics through the context of local culture
Integrasi Pembelajaran Matematika dan Nilai-Nilai Akidah Akhlak dalam Meningkatkan Karakter Religius Peserta Didik di MTs Miftahul Ishlah Tembelok Habiburrahman , Muhammad; Suriyandi, Lalu; Husaini, Muhammad Lutfiyan Fakhril
Mandalika Mathematics and Educations Journal Vol 7 No 3 (2025): Edisi September
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i3.9831

Abstract

This research is a qualitative descriptive field research. Data collection used observation, interviews, and documentation techniques. Data processing involved data reduction, data display, and conclusion drawing. The results of this study indicate: first, not all Mathematics teachers have implemented the integration of Mathematics and moral beliefs in understanding the oneness of God through the concept of natural number sequences. This is because teachers have difficulty explaining the connection between the concept of natural number sequences and the concept of the oneness of God. Teachers have tended to explain the material purely in Mathematics without integrating it with the concept of the oneness of God. Second, not all Mathematics teachers have implemented the integration of Mathematics and moral beliefs in understanding human existence in the world through the concept of geometry. This is because teachers are not yet accustomed to linking geometric concepts with human existence in the world. Third, not all Mathematics teachers have implemented the integration of Mathematics and moral beliefs in understanding the attitude of surrender to God through the concept of fractional number sequences. This is because teachers lack adequate knowledge about the attitude of surrender to God that will be integrated with the concept of fractional number sequences. Fourth, the integration of mathematics and moral values in understanding the concepts of honesty, accuracy, and simplicity through multiplication has not been implemented by all mathematics teachers. This is because teachers have difficulty explaining the connection or relationship between the concept of multiplication and honesty, accuracy, and simplicity.
Pengembangan Media Pembelajaran Interaktif Berbantuan Articulate Storyline pada Materi Rasio untuk Siswa Kelas VII Ramdanah, Saima; Karim, Karim; Noorbaiti, Rahmita
Mandalika Mathematics and Educations Journal Vol 7 No 3 (2025): Edisi September
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i3.9565

Abstract

The rapid advancement of technology poses challenges for educators to innovate in improving the quality of learning in the classroom. In addition, students grow up in an environment that is familiar with technology, so learning needs to be integrated with technology to suit their needs better. This research aims to develop interactive learning media assisted by Articulate Storyline on ratio material for seventh-grade students that meet the criteria of valid, practical, and effective. This research uses the Research and Development (R&D) research method with the ADDIE model (Analyze, Design, Develop, Implement, Evaluate). The results showed: (1) the learning media is categorized as very valid based on the results of material validation which reached a percentage of 91.25% and media validation of 93.75%, (2) the learning media is declared very practical because the response questionnaire of students and teachers reached a percentage of 88.89% and 83.33%, respectively, and (3) the learning media is in the medium or effective category because the N-gain test results show an average N-gain of 0.65. Thus, this interactive learning media of Articulate Storyline-assisted ratio can be declared valid, practical, and effective.
A Simulation Study of Interval Estimation in Nonparametric Regression Using the Truncated Spline Estimator Puspitasari, Melda; Dani, Andrea Tri Rian; Fauziyah, Meirinda
Mandalika Mathematics and Educations Journal Vol 7 No 3 (2025): Edisi September
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i3.9625

Abstract

This study examines interval estimation in truncated spline nonparametric regression using simulated data. The study aims to determine the impact of sample size, variance, and knot points on the performance of the truncated spline estimator. The results show that as the sample size increases, both the Generalized Maximum Likelihood (GML) and Mean Square Error (MSE) values decrease, while the coefficient of determination increases. This study also reveals that increasing the variance leads to higher GML and MSE values, as well as a lower coefficient of determination. Furthermore, the truncated spline nonparametric regression model achieves optimal performance with three knot points. The results showed that the more knot points, the GML and MSE values will decrease, while the coefficient of determination increases. The results of this study show that the determination of sample size, variance, and knot points significantly affects the accuracy and efficiency of the truncated spline nonparametric regression model, allowing it to serve as a reference for applying truncated spline nonparametric regression more effectively to produce a more optimal model that aligns with the characteristics of the data.
Klasifikasi Status Penerima Bantuan Program Keluarga Harapan di Provinsi NTB Menggunakan Metode Regresi Probit Harsyiah, Lisa; Widya Baskara, Zulhan; Eka Putri, Dina; Jurniati, Jurniati
Mandalika Mathematics and Educations Journal Vol 7 No 3 (2025): Edisi September
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i3.9776

Abstract

The Indonesian government's effort to accelerate the achievement of comprehensive social welfare involves adopting strategic policies in the form of distributing social assistance to economically vulnerable communities. One concrete example of this policy is the Family Hope Program (Program Keluarga Harapan/PKH). However, its implementation in the field still faces challenges, particularly in the form of unequal distribution, which has the potential to hinder the program’s effectiveness. To address this issue, a rigorous verification system is required to ensure that prospective beneficiaries truly meet the official criteria set by the government. Therefore, classifying households eligible for PKH is a crucial step. The probit regression approach is employed as a method to analyze and determine the household eligibility status. This method yields an accuracy rate of 76.25%, which is considered valid and reliable based on the Press’s Q statistic
A Computatioal Analysis of Kernel-Based Nonparametric Regression Applied to Poverty Data Adrianingsih, Narita Yuri; Dani, Andrea Tri Rian; I Nyoman Budiantara; Dandito Laa Ull; Raditya Arya Kosasih
Mandalika Mathematics and Educations Journal Vol 7 No 3 (2025): Edisi September
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i3.9802

Abstract

This research aims to model the relationship between poverty and socioeconomic variables in Nusa Tenggara Timur Province, Indonesia. The purpose of the study is to assess the effectiveness of nonparametric regression, specifically using kernel methods, to provide a more accurate representation of the complex and nonlinear relationships between predictor variables and poverty levels. The study focuses on several key variables, including average years of schooling, labor force participation rate, percentage of households with access to electricity, population density, illiteracy rate, and life expectancy. The research utilized a kernel regression approach, comparing the performance of different kernel functions, including Gaussian, Epanechnikov, Triangle, and Quartic kernels. The model’s performance was evaluated using metrics such as Mean Squared Error (MSE), Generalized Cross Validation (GCV), and the coefficient of determination (R²). The results showed that the Gaussian kernel function provided the most accurate predictions for poverty levels, with the best balance between model complexity and error.
Penggunaan Rubu’ Mujayyab untuk Meningkatkan Pemahaman Konsep Matematis Siswa Ramadhan, Muhammad Rizky; Hakim, Wildan
Mandalika Mathematics and Educations Journal Vol 7 No 3 (2025): Edisi September
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i3.9857

Abstract

Mathematic learning is often perceived as abstract and difficult by students due to the lack of visualization of angle concepts and mathematic functions. The rubu' mujayyab, a historical tool from Islamic science, offers cultural connections that can increase student motivation and engagement in understanding modern mathematic concepts. Recent studies have shown that the rubu' mujayyab is effective in helping students understand the concepts of intelligence and trigonometry significantly, as well as improving mathematical representation skills and learning motivation. One of the challenges in implementation is the availability and skills of teachers in its use. However, simple training can help teachers read scales and interpret angle values mathematically. These findings strengthen the argument that the rubu' mujayyab is not only historical but also relevant for contemporary education, transforming it into a viable alternative learning medium in mathematics courses
Pengembangan LKPD Materi Transformasi Geometri dengan Pendekatan Saintifik Berbantuan Geogebra untuk Peserta Didik SMA Kelas XI Girsang, Melan Kristina; Caswita, Caswita; Wijaya, Agung Putra
Mandalika Mathematics and Educations Journal Vol 7 No 3 (2025): Edisi September
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v7i3.9886

Abstract

This study aims to develop a valid and practical LKPD (Student Worksheet) for use in the mathematics learning process on the topic of geometric transformations. The novelty of this research lies in the integration of the scientific approach and geogebra in teaching geometric transformations. The scientific approach has been proven to enhance problem-solving skills, while geogebra improves concept understanding and problem-solving abilities. The integration of both in the developed LKPD is expected to enhance students' problem-solving skills in an interactive and technology-based manner. The research method used is Research and Development (R&D) with the adaptation of the ADDIE development model. Data collection techniques in this study include interviews, observations, and questionnaires. The data collection instruments consist of interview guidelines, expert validation questionnaires, and response questionnaires. The results of the research have been analyzed and validated in terms of content, media, and language aspects. Additionally, an analysis of the practicality of the LKPD was conducted by teachers and students who used it in the learning process. The validity score for the content aspect from Validator 1 was 80%, categorized as valid, Validator 2 was 71%, categorized as valid, and Validator 3 was 80%, categorized as valid. For media and language aspects, the evaluation from Validator 1 was 66%, categorized as valid, Validator 2 was 61%, and Validator 3 was 85%, categorized as very valid. The analysis of LKPD practicality by teachers and students showed that the LKPD was considered practical, with a practicality score of 84.4% from the teacher (categorized as practical) and 90.8% from the students (categorized as very practical).

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