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MES: Journal of Mathematics Education and Science
Published by Universitas Islam Sumatera Utara
ISSN : 25284363     EISSN : 25796550     DOI : https://dx.doi.org/10.30743/mes.v4i2.1292
Core Subject : Education,
Mathematics
MES (Journal of Mathematics Education and Science) diterbitkan secara berkala pada bulan April dan Oktober oleh Program Studi Pendidikan Matematika FKIP Universitas Islam Sumatera Utara. Jurnal ini membahas tentang kajian dibidang pendidikan matematika, pembelajaran matematika berbasis ICT dan matematika terapan.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 333 Documents
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TEORI PERMAINAN DENGAN PURE STRATEGY PADA PERSAINGAN PRODUK MOBILE NETWORK OPERATOR Debora Exaudi Sirait
MES: Journal of Mathematics Education and Science Vol 11, No 2 (2026): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v11i2.13217

Abstract

This research aims to analyze the competitive strategies between Telkomsel and XL SIM card products using game theory. The research data were obtained through questionnaires distributed to students of FMIPA as respondents. The analyzed attributes include starter card price, call and SMS tariffs, signal quality, offered features, internet access capability, active/grace period, and prize lottery programs.The validity test results show that all attributes are valid, while the reliability test produces a Cronbach’s Alpha value of 0.71, indicating that the instrument is reliable. The analysis was conducted using a payoff matrix with pure strategies through the maximin and minimax approaches. The results show that the maximin and minimax values are equal, namely 20, indicating the existence of an equilibrium point (saddle point). The optimal strategy obtained is (X3, Y5), where Telkomsel uses the signal quality strategy and XL uses the internet access capability strategy.
PENGARUH PENGGUNAAN MODEL PEMBELAJARAN CONCEPTUAL UNDERSTANDING PROCEDURES BERBANTUAN GEOGEBRA TERHADAP KEMAMPUAN REPRESENTASI MATEMATIS Aisyah Dwia Ningsih; Syahriani Sirait
MES: Journal of Mathematics Education and Science Vol 11, No 2 (2026): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v11i2.13497

Abstract

This study aims to determine the effect the Concepual Understanding Procedures learning model on student’s mathematical representation abilities. This research was conducted at MTs S Nurul Iman Simpang Empat in the 2025/2026 academy year. The type of research used was a quasi experimental design with a two group pretest-posttest design. The population of this study consisted of all eighth grade student’s. The samples were class VIII-B as the experimental class, which was taught using the Concepual Understanding Procedures learning model and class VIII-C as the control class, which was taught using a direct instruction model. After the learning process was completed, the posttest resultes showed that the average score of the experimental class 82.4, while the control class was 76.6. The results of the t-test showed that it can be concluded that there is a significant effect of the Concepual Understanding Procedures learning model on student’s mathematical representation abilities.
PENGARUH MODEL REALISTIC MATHEMATICS EDUCATION BERBANTUAN APLIKASI DESMOS TERHADAP KEMAMPUAN PEMECAHAN MASALAH SISWA Dita Khairani Hasibuan; Eva Margharetha Saragih
MES: Journal of Mathematics Education and Science Vol 11, No 2 (2026): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v11i2.13401

Abstract

This study was motivated by the researcher’s commitment to improving the problem-solving skills of students at Meranti State Senior High School 1. The aim of this study was to determine the effect of the Realistic Mathematics Education model, supported by the Desmos application, on the problem-solving skills of Year 10 students at Meranti State Senior High School 1. The study employed a quasi-experimental design, specifically a two-group pre-test–post-test design. The population in this study comprised all Year 10 classes X-5 and X-6, selected using cluster random sampling. The subjects of this study were the students of Year 10 class X-6, serving as the experimental group using the Realistic Mathematics Education model supported by the Desmos application, and Year 10 class X-5, serving as the control group using the direct instruction model. The material used in this study was central tendency statistics: mean, median and mode of single data sets. Following the completion of the lessons, a post-test was administered, yielding an average score of 75.1 for the experimental class and 56.8 for the control class. The t-test results indicate a significant effect of the Realistic Mathematics Education model supported by the Desmos application on problem-solving skills in the statistics module for Class X at State Senior High School 1 Meranti.
PENGEMBANGAN KURIKULUM MATEMATIKA BERBASIS TEORI BELAJAR UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS SISWA SMK NEGERI 2 PADANGSIDIMPUAN Palwina Machrani; Fadilla Sri Utami Siregar; Mariam Nasution
MES: Journal of Mathematics Education and Science Vol 11, No 2 (2026): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v11i2.13440

Abstract

This study aims to develop a mathematics curriculum based on learning theories to improve students' critical thinking skills at SMK Negeri 2 Padangsidimpuan. The method used was Research and Development consisting of needs analysis, design, development, implementation, and evaluation stages. The subjects were tenth-grade students. The instruments included a critical thinking test, observation sheets, and student response questionnaires. The results showed that the developed curriculum met the criteria of validity, practicality, and effectiveness. This was indicated by an increase in the average critical thinking score from 58.8 to 78.9. In addition, the implementation of learning was categorized as very good (86.7%), and student responses were positive (84%). Therefore, the developed curriculum is effective in improving students' critical thinking skills and the quality of mathematics learning.
ANALISIS REGULASI EMOSI SISWA DITINJAU BERDASARKAN GENDER DALAM MENYELESAIKAN SOAL CERITA PADA SISWA KELAS VII UPTD SMP N 1 AEK KUASAN Jelia Arika; Syahriani Sirait
MES: Journal of Mathematics Education and Science Vol 11, No 2 (2026): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v11i2.13639

Abstract

This study aims to describe students’ emotional regulation based on gender in solving word problems on fraction material. This research employed a qualitative descriptive approach involving 27 seventh-grade students at UPTD SMP Negeri 1 Aek Kuasan, consisting of 16 male students and 11 female students . Data were collected through tests, questionnaires, observations, interviews, and documentation. The results showed that students' emotional regulation was categorized into high, medium, and low levels. Most students were in the medium category (40.7%), followed by high (29.6%) and low (29.6%) categories . Based on gender, female students tended to have better emotional regulation than male students, as indicated by a higher percentage in the high category. These findings indicate that emotional regulation plays an important role in helping students remain calm, focused, and systematic in solving mathematical word problems. Therefore, emotional aspects should be considered in mathematics learning, especially when dealing with complex problems.
PENGARUH MODEL PEMBELAJARAN COLLABORATIVE PROBLEM SOLVING BERBANTUAN DESMOS TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS Lubis, Adinda Mutiara Rahma; Saragih, Sri Rahma Dewi
MES: Journal of Mathematics Education and Science Vol 11, No 2 (2026): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v11i2.13638

Abstract

The purpose of this study was to determine whether there was an effect of the implementation of the Collaborative Problem-Solving learning model assisted by Desmos on students’ mathematical problem-solving ability in quadratic function material for class X at SMA Negeri 1 Aek Kuasan in the 2025/2026 academic year. This research used a quasi-experimental method with a two-group pretest-posttest design. The population in this study consisted of all class X students, which were divided into six classes. The sample of this study consisted of two classes, namely class X-2 and class X-3, selected using cluster random sampling. Class X-2 was used as the experimental class using the Collaborative Problem-Solving learning model assisted by Desmos, while class X-3 was used as the control class using the direct learning model assisted by Desmos. After the learning process was completed, the posttest results showed that the average score of the experimental class was 80.027, while the control class was 67.583. The t-test result showed that t_hitung=6,722>t_tabel=1,994, therefore H_0 was rejected and H_a was accepted. Thus, it can be concluded that there was an effect of the Collaborative Problem-Solving learning model assisted by Desmos on students’ mathematical problem-solving ability in quadratic function material for class X at SMA Negeri 1 Aek Kuasan in the 2025/2026 academic year.
PENGARUH MODEL PROBLEM BASED LEARNING TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA Zahari Afsih; Syahriani Sirait
MES: Journal of Mathematics Education and Science Vol 11, No 2 (2026): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v11i2.13586

Abstract

This study aims to analyse students’ ability to transform contextual problems into mathematical models in the subject of Systems of Linear Equations with Two Variables through the application of the Problem-Based Learning approach. This study employs a quantitative approach using a quasi-experimental method and a pretest-posttest control group design. The study population comprises all Year 8 secondary school students, whilst the sample consists of two classes an experimental class and a control class selected using purposive sampling. The research instrument consists of a test in the form of contextual story problems used to measure students’ mathematical modelling abilities. Research data were obtained through pre-tests, post-tests, student answer sheets, brief interviews, and the use of worksheets based on contextual problems. Data analysis was conducted using normality tests, homogeneity tests, t-tests, N-Gain, and effect size. The results of the study indicate that students who learn using the Problem-Based Learning model demonstrate better ability in transforming contextual problems into mathematical models compared to students who learn using conventional teaching methods. Consequently, the Problem-Based Learning model can serve as an effective alternative teaching method for enhancing students’ mathematical modelling skills.
IMPLEMENTASI MODEL CONTEXTUAL TEACHING AND LEARNING BERBASIS ETNOMATIKA GHUMAH BOSA UNTUK MENINGKATKAN LITERASI DAN NUMERASI MATEMATIS SISWA Nurhayati Lubis; Syahriani Sirait
MES: Journal of Mathematics Education and Science Vol 11, No 2 (2026): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v11i2.13694

Abstract

This study aims to determine the effect of the Contextual Teaching and Learning model based on Malay culture on students’ mathematical numeracy literacy abilities in the topic of flat-sided geometric solids for grade VIII students at UPTD SMP Negeri 3 Silau Laut in the 2025/2026 academic year. This study used a quasi-experimental method with a two-group pretest-posttest design. The population of this study consisted of all grade VIII students at UPTD SMP Negeri 3 Silau Laut, while the sample consisted of two classes selected using purposive sampling techniques, namely the experimental class and the control class. The experimental class was taught using the Malay culture-based Contextual Teaching and Learning model assisted by the GeoGebra application, while the control class used the expository learning model. Data collection techniques included mathematical numeracy literacy tests, observation, and documentation. Data analysis was carried out using normality tests, homogeneity tests, and hypothesis tests. The results showed that the implementation of the Malay culture-based Contextual Teaching and Learning model had an effect on students’ mathematical numeracy literacy abilities. Students in the experimental class showed improvement in analyzing information, using mathematical symbols, performing arithmetic operations, and interpreting problem-solving results compared to students in the control class. In addition, learning integrated with Malay culture and the use of the GeoGebra application were able to increase students’ learning motivation, activeness, and understanding of mathematical concepts in a more contextual and meaningful way. Therefore, the Malay culture-based Contextual Teaching and Learning model is effective as an alternative mathematics learning model to improve students’ mathematical numeracy literacy abilities.
PENGEMBANGAN MEDIA PEMBELAJARAN BERBASIS GEOGEBRA UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH SISWA SMP NEGERI 2 PEMATANG SIANTAR Rianita Simamora; Yoel Octobe Purba
MES: Journal of Mathematics Education and Science Vol 11, No 2 (2026): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v11i2.13677

Abstract

This study aims to describe the level of validity of the learning media, to describe the level of teacher mastery and student engagement, and to describe the responses of teachers and students to the development of learning media using Geogebra on the topic of the Cartesian plane at SMP Negeri 2 Pematang Siantar, with a sample size of 30 students. The type of research used is research and development based on the ADDIE model, which consists of Analysis, Design, Development, Implementation and Evaluation. Based on the results of the research conducted, it can be stated that the study has successfully developed a digital media product; the data found indicates that the resulting media meets the criteria for validity, reliability, effectiveness and efficiency.
PENGEMBANGAN BAHAN AJAR EVALUASI PEMBELAJARAN SD UNTUK MENINGKATKAN KETERAMPILAN BERPIKIR KRITIS MAHASISWA Theresia Monika Siahaan; Melvin V.M. Simanjuntak
MES: Journal of Mathematics Education and Science Vol 11, No 2 (2026): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v11i2.13695

Abstract

This study aims to develop teaching materials for the ‘Primary School Learning Evaluation’ course that can enhance the critical thinking skills of student teachers. The research method employed was Research and Development (R&D) using the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). The research subjects were students on the primary school teacher education programme at HKBP Nommensen University, Pematangsiantar. The research instruments included an expert validation questionnaire, a critical thinking skills test, and a student response questionnaire. The research results indicate that the developed teaching materials meet validity criteria with an average score from validators of 88% (very good category), are practical with high readability and a positive student response rate of 91%, and are effective as demonstrated by an increase in students’ critical thinking skills scores with an average gain score of 0.65 (moderate to high category). Thus, the teaching materials for Primary School Learning Evaluation developed have been proven to be suitable for use and contribute to improving the critical thinking skills of student teachers.

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