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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
Pengaruh Penggunaan Model Problem Based Learning Pada Pembelajaran Statistika Terhadap Kemampuan Pemecahan Masalah Siswa Kelas VIII SMPN 13 Mataram Tahun Pelajaran 2024/2025. Yunitasari, Ria; Sripatmi; Eka Kurniawan
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.v7i3.9726

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan model Problem Based Learning pada pembelajaran statistika terhadap kemampuan pemecahan masalah siswa kelas VIII SMPN 13 Mataram tahun ajaran 2024/2025. Penelitian ini menggunakan metode Quasi eksperimen dengan pendekatan kuantitatif dan posttest-only control design. Sampel dipilih menggunakan teknik probability sampling dengan metode cluster random sampling, yaitu kelas VIII A sebagai kelas kontrol (36 siswa) yang menggunakan model pembelajaran langsung, dan kelas VIII B sebagai kelas eksperimen (36 siswa) yang menggunakan model pembelajaran PBL. Instrumen yang digunakan yaitu lembar observasi guru dan siswa serta soal kemampuan pemecahan masalah. Teknik analisis data yang digunakan uji normalitas, uji homogenitas, uji hipotesis (independent sample t-test) dan uji effect size.  Hasil penelitian menunjukkan bahwa rata-rata nilai posttest kelas eksperimen (81,64) lebih tinggi dibandingkan dengan kelas kontrol (62,31). Berdasarkan hasil uji-t menggunakan SPSS dengan taraf signifikansi 5%, diperoleh nilai , yang menunjukkan bahwa terdapat perbedaan yang signifikan antara kedua kelompok. Selain itu, nilai effect size sebesar 1,977 termasuk kategori tinggi, menunjukkan bahwa model pembelajaran PBL memberikan pengaruh positif yang signifikan terhadap peningkatan kemampuan pemecahan masalah matematika siswa.
Efektivitas Model Gallery Walk Berbantuan Alat Peraga Terhadap Hasil Belajar Matematika Tuto Laba, Maria Eveline; Prayitno, Sudi; Junaidi, Junaidi
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.v7i3.9732

Abstract

This research is motivated by the low mathematics learning outcomes of students, which was caused by the use of conventional learning models. The purpose of this study was to examine the effectiveness of the gallery walk model assisted by teaching aids on mathematics learning outcomes of SMP Negeri 1 Gunungsari students in the 2024/2025 school year. This research employs a quasi experimental design method with a quantitative approach and a posttest-only control design. The sampling technique used is cluster random sampling technique. The samples in this research are students of class VIII D as the experimental class and class VIII A as the control class. The experimental class is given treatment with a gallery walk model assisted by props while the control class is given treatment using a conventional model. The data collection techniques used are tests and observations. The average posttest score of the experimental class (79,09) is higher than the control class (74,50). Based on the calculation of the independent t-test using SPSS with a significance level of 5%, the   , so it’s concluded that the use of the gallery walk model assisted by teaching aids is effective on the mathematics learning outcomes of class VIII students of SMP Negeri 1 Gunungsari in the 2024/2025 academic year.
Pengaruh Growth Mindset terhadap Hasil Belajar Materi Teorema Pythagoras melalui Mediasi Self-Efficacy Sabriyani, Syifa; Prayitno, Sudi; Kurniawan, Eka
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.v7i3.9738

Abstract

This study aims to examine the effect of growth mindset on self-efficacy, as well as its influence on students’ learning outcomes in the Pythagoras' Theorem topic, both directly and indirectly through the mediation of self-efficacy, among eighth-grade students at SMPN 15 Mataram in the 2024/2025 academic year. This research employed a quantitative approach with an ex-post facto design. The population consisted of 371 students, and a sample of 54 students from classes VIII-B and VIII-G was selected using cluster random sampling. Data were collected through questionnaires and tests, and analyzed using SPSS software along with the Macro PROCESS Model 4 to test the mediation model. The results showed that 1) growth mindset had a positive and significant effect on students’ self-efficacy (a=0,740, p<0,001); 2) there was no significant direct effect of growth mindset on learning outcomes (c'=0,349, p=0,249); 3) there was a positive and significant indirect effect of growth mindset on learning outcomes through the mediation of self-efficacy (ab=0,930, CI [0,478 to 1,438]), indicating full mediation. Thus, self-efficacy is proven to act as a full mediator in the relationship between growth mindset and students’ learning outcomes.
Pengaruh Adversity Quotient dan Emotional Quotient Terhadap Prestasi Belajar Matematika Siswa Kelas VIII MTs Negeri 3 Mataram Tahun Ajaran 2024/2025 Aulia, Baiq Risma; Subarinah, Sri; Supiarmo, M. Gunawan
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.v7i3.9744

Abstract

Low student math learning achievement is still a problem that is often encountered. Internal factors such as adversity quotient and emotional quotient are thought to influence student learning achievement. This study aims to determine the effect of adversity quotient and emotional quotient on students' mathematics learning achievement both partially and simultaneously. This research uses a quantitative approach with ex post facto method. The population of this study was class VIII as many as 200 students. The sample used was 133 students who were determined using purposive sampling technique. The instruments in this study were adversity quotient questionnaire, emotional quotient questionnaire and math learning achievement test. The instruments were validated by two experts. By using regression analysis, the results obtained: 1) there is a positive and significant effect of adversity quotient on mathematics learning achievement of students in class VIII MTsN 3 Mataram in the 2024/2025 school year with a contribution of 7.2%; 2) there is a positive and significant effect of emotional quotient on mathematics learning achievement of students in class VIII MTsN 3 Mataram in the 2024/2025 school year with a contribution of 12.9%; 3) there is a positive and significant effect of adversity quotient and emotional quotient on mathematics learning achievement of students in class VIII MTsN 3 Mataram in the 2024/2025 school year with a contribution of 11.7%.
Pengaruh Model Problem Based Learning Berbasis Etnomatematika Terhadap Kemampuan Pemecahan Masalah Matematis Siswa Kelas VIII Ardiana, Lailik; Baidowi, Baidowi; Ulfa Lu'luilmaknun
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.v7i3.9752

Abstract

This study was motivated by the low mathematical problem-solving ability of students, which is attributed to the use of ineffective, teacher-centered learning models. One approach that can be applied to improve students’ mathematical problem-solving skills is the problem-based learning (PBL) model. This study aims to determine the effect of implementing an ethnomathematics-based problem-based learning model on students’ mathematical problem-solving ability. The research was conducted at SMP Negeri 14 Mataram in the 2024/2025 academic year using a quantitative approach with a quasi-experimental design. The population consisted of all eighth-grade students at SMP Negeri 14 Mataram. The research sample comprised 60 students, with 30 students in the experimental class and 30 in the control class, selected through simple random sampling. The data collection instrument was a mathematical problem-solving test. The average score of the experimental class was 77.70, which was higher than the control class’s average score of 71.40. The analysis results showed that . Furthermore, the effect size calculation yielded d = 0.69, indicating a moderate effect. These results show that the ethnomathematics-based problem-based learning model positively influences the mathematical problem-solving ability of eighth-grade students at SMP Negeri 14 Mataram, particularly in the topic of circles.
Pengaruh Model Pembelajaran Matematika Realistik terhadap Hasil Belajar Siswa Kelas VII di MTs Dakwah Islamiyah Putri Hasnawati, Anida; Sripatmi; Pramestie Wulandari, Nourma
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.v7i3.9753

Abstract

This study aims to determine the effect of the Realistic Mathematics Education (RME) model on students' learning outcomes. A quantitative approach with a quasi-experimental design was employed. The experimental group received instruction using the RME model, while the control group was taught using direct instruction. The population of this study consisted of all seventh-grade students at MTs Dakwah Islamiyah Putri Nurul Hakim in the 2024/2025 academic year, totaling 126 students divided into four classes. The sample was selected using simple random sampling, resulting in class VII B (32 students) as the experimental group and class VII C (32 students) as the control group. Data were collected using a learning outcome test. Hypothesis testing was conducted using the t-test, which yielded a t-value (tₕitung) of 3.203 and a t-table value (ttabel) of 1.999. Since tₕitung > ttabel, the null hypothesis was rejected, indicating a significant difference in learning outcomes between students taught with the RME model and those taught with direct instruction. The effect size was calculated to be 0.801, which falls into the moderate category. This suggests that the RME model has a meaningful impact on students' mathematics learning outcomes. outcomes of Grade VII students at MTs Dakwah Islamiyah Putri.
Analisis Kemampuan Representasi Matematis ditinjau dari Self Efficacy pada Siswa Kelas VIII MTs Negeri 2 Mataram Tahun Ajaran 2024/2025 Elanda, Eva; Subarinah, Sri; Salsabila, Nilza Humaira
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.v7i3.9761

Abstract

Mathematical representation ability is an essential aspect of solving mathematical problems, particularly in the topic of relations and functions. However, in practice, many students struggle to express mathematical ideas through verbal, visual, and symbolic representations. One factor that may influence this ability is self efficacy, or students’ belief in their ability to complete mathematical tasks. This study aims to describe students’ mathematical representation ability in solving problems on relations and functions viewed from their self efficacy. The research was conducted at MTs Negeri 2 Mataram in the academic year 2024/2025 using a descriptive qualitative method. The subjects consisted of three eighth-grade students representing high, moderate, and low self efficacy categories based on questionnaire results. The instruments used included a self-efficacy questionnaire, a mathematical representation test, and interview guidelines. The findings show that students with high self-efficacy were able to fulfill all types of representation accurately and completely. Students with moderate self efficacy showed partial ability but were inconsistent. Meanwhile, students with low self-efficacy experienced difficulties in all forms of representation. These findings indicate a tendency that self efficacy plays a role in students’ quality of mathematical representation ability.
Pengaruh Gaya Belajar dan Disiplin Belajar Terhadap Hasil belajar Matematika Siswa Yasin, Irwan; Sarjana, Ketut; Hikmah, Nurul
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.v7i3.9775

Abstract

This study aims to determine the influence of learning styles and learning discipline on mathematics achievement among Grade XI students at SMAN 1 Kopang in the 2024/2025 academic year. This is a quantitative study using the ex post facto method. The population consists of 98 students, and the sample of 51 students was selected using simple random sampling based on the Taro Yamane formula. Data were collected through questionnaires and tests, and analyzed using linear regression. The relationship between learning styles and mathematics achievement is expressed by the equation Y= 0,501X1 + 27,995, with a correlation coefficient of 0.320, indicating a weak relationship. Meanwhile, the relationship between learning discipline and mathematics achievement is expressed by Y= 0,646X2 + 22,975, with a correlation of 0.435, indicating a moderate relationship. Simultaneously, learning styles and learning discipline together show a relationship with mathematics achievement through Y= 0,459X1 + 0,618X2, with a correlation coefficient of 0.524, categorized as moderate. The coefficient of determination is 24.4%, indicating that both variables simultaneously influence students’ mathematics learning outcomes.
Optimization of LPG Distribution on VRP Using Cheapest Insertion Heuristics Algorithms and Dynamic Programming Aisyah, Siti; Husein, Ismail
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.v7i3.9694

Abstract

Determining the most efficient distribution route often encounters difficulties, especially at the LPG gas agency of PT. Cahaya Mentari Bumi Perkasa, where routes are primarily selected based only on the drivers' intuition. The firm manages 35 distribution sites with 3 fleets, each capable of holding 560 cylinders. This study seeks to identify the most efficient distribution route and assess the distribution costs of the company's existing route in comparison to the proposed route, utilizing the Vehicle Routing Problem (VRP) model, constrained by vehicle capacity and fluctuating demand, known as the Capacitated Vehicle Routing Problem (CVRP). The methodology employs the Cheapest Insertion Heuristics (CIH) algorithm to generate the first solution and utilizes Dynamic Programming (DP) as the precise technique for optimal route refinement. The findings indicate that employing Dynamic Programming to enhance the Cheapest Insertion Heuristics method effectively optimizes distribution routes, resulting in roughly 28% reduction in trip distance, 8.2% decrease in journey time, and 19,9% reduction in distribution expenses. The improvement decreased the number of trips from 9 to 8, resulting in enhanced fleet utilization.
Penerapan Penerapan Model Discovery Learning pada Materi Garis dan Sudut untuk Meningkatkan Hasil Belajar Siswa Janah, Miftahul; Baidowi, Baidowi; Suntoko, M. Iwan
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.v7i3.9735

Abstract

This research is a Classroom Action Research (CAR) aimed at improving students’ mathematics learning outcomes on the topic of Lines and Angles through the implementation of the Discovery Learning model. The problem in this study is the low initial understanding of geometry concepts among students, particularly in the topic of lines and angles, which negatively affects their mathematics learning outcomes. This is evident from the pretest results, which showed that only 4 students (9.3%) achieved the Minimum Mastery Criteria (MMC). The research was conducted in two cycles using the Kemmis and McTaggart model, which includes the stages of planning, action, observation, and reflection. The research subjects consisted of 43 seventh-grade students from class VII E at SMPN 1 Mataram, who received treatment in the form of the Discovery Learning model implementation by the researcher. Data were collected through student activity observation sheets and learning outcome tests, which were then analyzed using descriptive quantitative and qualitative methods. In Cycle I, the learning focused on the types of angles (2 meetings), while in Cycle II, the focus was on the relationships between angles (3 meetings). The success criteria were determined based on students achieving MMC ≥ 75 and classical completeness ≥ 85%. The results showed an increase in classical completeness from 46.5% in Cycle I to 86% in Cycle II. Thus, the implementation of the Discovery Learning model proved effective in improving students' mathematics learning outcomes.

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