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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 377 Documents
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Analisis Kemampuan Pemecahan Masalah Matematis ditinjau dari Motivasi Belajar Matematika Siswa Hasanah, Uswatun; Soeprianto, Harry; Triutami, Tabita Wahyu; Hayati, Laila
Mandalika Mathematics and Educations Journal Vol 6 No 1 (2024): Edisi Juni
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v6i1.6977

Abstract

This study aims to describe the ability of mathematical problem solving in terms of mathematics learning motivation of class VIII students of SMP Negeri 17 Mataram. The type of research used is qualitative description. The subjects in this study consisted of 11 students consisting of 4 students representing high learning motivation, 4 students of medium learning motivation, and 3 students representing low learning motivation. The data collection techniques were questionnaires, tests, and interviews. The instruments used were interview guidelines, 20 learning motivation items, and 2 problem solving ability test questions. The results showed that students with high solving ability were able to fulfill the four stages of Polya. Meanwhile, students with moderate problem-solving ability were able to fulfill two or three stages of Polya and students with low problem solving ability were unable to work on all stages of Polya.
META ANALISIS PENGARUH MODEL PEMBELAJARAN REALISTIC MATHEMATICS EDUCATION (RME) UNTUK MENINGKATKAN HASIL BELAJAR MATEMATIKA Safitri, Vivi Irvana; Caswita, Caswita; Rumite, Wayan; Afifah, Nadia Zahra
Mandalika Mathematics and Educations Journal Vol 6 No 2 (2024): Edisi Desember
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v6i2.7021

Abstract

This research aims to re-analyze the effectiveness of the Realistic Mathematical Education (RME) model on students' learning outcomes. The study employs a meta-analysis method using qualitative descriptive analysis, reviewing articles from previously published research. A total of 20 national articles accessible online through Google Scholar, published between 2019 and 2024, were sampled. The search for articles was conducted using the Publish or Perish application with the keywords “Realistic Mathematical Education (RME)” and “Learning Outcomes.” This meta-analysis utilized 20 relevant articles from national journals regarding Realistic Mathematical Education (RME) and its impact on students' learning outcomes from 2019 to 2024.The results of the meta-analysis indicate that this model can improve students' learning outcomes, with a minimum increase of 0.07% and a maximum increase of 0.74%, resulting in an average percentage increase of 0.466%. The effect size calculated was 0.1523, categorized as having a moderate influence. Therefore, it can be concluded that the Realistic Mathematical Education (RME) model is highly effective in mathematics instruction for enhancing students' learning outcomes.
Pengaruh Model Pembelajaran Kooperatif Tipe Make A Terhadap Motivasi dan Hasil Belajar Materi Pertidaksamaan Linear Satu Variabel Kelas VII SMPN 3 Mataram Tahun Ajaran 2023/2024 Nufus, Hayatul; Baidowi, Baidowi; Humaira Salsabila, Nilza; Hikmah, Nurul
Mandalika Mathematics and Educations Journal Vol 6 No 1 (2024): Edisi Juni
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v6i1.7035

Abstract

The purpose of this study was to determine the effect of the cooperative learning model type make a match on the motivation and learning outcomes of mathematics in class VII students of SMPN 3 Mataram. The research design used is Quasi Experimental Design. The sampling technique used is probability sampling where class VII-1 is the control class and VII-2 is the experimental class. Based on the results of the study, the average score of the mathematics learning motivation of students in the experimental class is 61.3 with a high category, while the control class got an average score of 42.52 with a medium category. The results of the study, the average value of the mathematics learning outcomes of students in the experimental class was 75.27 with a learning completion percentage of 70%. While the control class got an average score of 51.23 with a learning completion percentage of 9.68%. The result of the t-test of 2 independent show that there is an effect of the cooperative learning model type make a match on the motivation and learning outcomes of class VII students of SMPN 3 Mataram.
Pengaruh Self Confidence Terhadap Hasil Belajar Matematika Siswa Kelas VIII SMP Valentina Isyana, Besty; Baidowi; Novitasari, Dwi; Sridana, Nyoman
Mandalika Mathematics and Educations Journal Vol 6 No 1 (2024): Edisi Juni
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v6i1.7125

Abstract

This study aims to analyze the self-cofidence and mathematics learning outcomes of students and to show the significant influence of self-cofidence on the mathematics learning outcomes of grade  students in one of the junior high schools in the city of Mataram. The subjects in this study were 27 students from grade  C who were selected by cluster random sampling technique. Data collection techniques in this research are self-confidence and mathematics learning outcomes tests. Data collection techniques in this research were self-confidence questionnaires and mathematics learning outcomes tests. The results of self-confidence data analysis and mathematics learning outcomes tests show that: (1) self-confidence indicators with good categories, namely optimism, responsibility, being objective, rational or realistic, improving abilities and skills, successes and failures obtained, as well as acceptance and appreciation in the classroom, while indicators of belief in one's own abilities are in the fairly good category. As for the mathematics learning results, it shows that students are more capable in the aspect of knowledge than skills, for mathematical problem solving, students have shown their ability at the stage of understanding problems and preparing problem solving plans quite well, while the ability of students at the stage of implementing the plan and re-examining problem solving is still low; (2) There is a significant influence of self-confidence on the mathematics learning outcomes of grade junior high school students, with a contribution of 33.9%
Model Matematika Kecanduan Media Sosial Tiktok Pada Siswa: Sebuah Kajian Dengan Pendekatan SEI1I2I3R Abdul Aziz; Luthfia Azzahra; Selvia Lovita Sari; Adib Mustofa Zaman; Wayan Rumite
Mandalika Mathematics and Educations Journal Vol 6 No 2 (2024): Edisi Desember
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v6i2.7129

Abstract

TikTok addiction among high school students in Lampung Province is very worrying. This study aims to identify and understand the spread model of TikTok addiction as well as analyze the equilibrium stability of the model. The subjects of this research are high school students in Lampung Province. The research sample consists of 90 students, with details of 63 females and 27 males, who were randomly selected from the population of high school students in Lampung Province. The first step is to build a mathematical model based on assumptions related to the  models, as well as the characteristics of addiction. From this, diagrams and mathematical models in differential equations are formed. Next, the researcher will calculate the basic reproductive value and determine the addiction-free and endemic equilibrium points based on a pre-built model. The next stage is to analyze the stability of these equilibrium points. Ultimately, the simulation will be carried out using the  model program by entering the initial values and parameters set. Based on the research results, a building model of Tiktopk addiction was obtained, namely , , , , , , with . Based on the results of the analysis, it was found that the basic reproductive number () of social media addiction among students reached 1.02. This indicates that, on average, one student who is already addicted can spread his addiction to one to two other vulnerable students in the sample population studied. The number of students in each compartment initially has an upward graph, gradually decreasing over time, and is in equilibrium. Based on the study's results, it was found that the equilibrium points of the differential equation describing the mathematical model are stable.
Indonesian’s Mathematics Teacher Comprehension Towards Geogebra Intan Kertiyani; Rahma Nasir; Uncok Manigor Jokkas Siahaan
Mandalika Mathematics and Educations Journal Vol 6 No 1 (2024): Edisi Juni
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v6i1.7189

Abstract

Numerous studies have mentioned that Geogebra provides positive impacts towards mathematics lessons and suggested to integrating this software into the classroom activity. In order to prepare the teacher for Geogebra integration, study for teacher comprehension of Geogebra is required as the basic for future study. This paper aimed to capture Indonesian mathematics teacher comprehension about Geogebra. This was descriptive study using survey method. The sample was 296 junior high school mathematics teachers. The teachers were asked to fulfilled the questionnaire to obtain their comprehension towards Geogebra. The results revealed that 50% teachers were at level 1 in understanding the features of Geogebra and more than half of them has never been utilized Geogebra in their mathematics lesson and never been construct an applet Geogebra as their instructional media. Those results suggest the urgency to provide the Geogebra training for mathematics teacher in order to enhace students comprehension towards Geogebra.
The development of PISA-like mathematics problem using Lombok Island contexts Triutami, Tabita Wahyu; Novitasari, Dwi; Salsabila, Nilza Humaira
Mandalika Mathematics and Educations Journal Vol 6 No 1 (2024): Edisi Juni
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v6i1.7198

Abstract

The results of the PISA test for mathematical literacy in 2000–2018 and several previous studies show that students' critical thinking abilities in Indonesia are still relatively low. One of the reasons why students' critical thinking skills in Indonesia are low is because PISA-like problems have not been integrated evenly into mathematics learning. The aim of this research is to obtain a prototype of PISA-like mathematics problems in the context of Lombok Island that are oriented towards critical thinking skills that are valid, according to experts. This research is design research, which consists of 3 stages, namely analysis, design, and evaluation. The PISA-like problem that has been developed consists of twelve questions about space and shape, uncertainty, and data. Each set of questions consists of levels 1 to 6. Lombok Island contexts contained in the questions are Mount Rinjani, woven cloth with Subahnale and Alang motifs, the game of Dengkleng (Engklek), Gendang Beleq, and the Limbungan traditional house. At the evaluation stage, the validity of the development product is assessed by experts. The instrument used is a PISA-like problem validation sheet. The results of this research obtained a prototype of a PISA-like mathematics problem with a valid category, according to experts.
Kesalahan mahasiswa non-matematika dalam melakukan uji normalitas Wulandari, Nourma Pramestie; Junaidi, Junaidi
Mandalika Mathematics and Educations Journal Vol 6 No 1 (2024): Edisi Juni
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v6i1.7204

Abstract

Normality testing is an essential part of statistical analysis to determine whether observed data are normally distributed or not. This study aims to document and analyze various types of errors frequently made by non-mathematics students when conducting normality tests. Furthermore, this descriptive qualitative research involved 32 second-year non-mathematics students as participants, who were given tasks requiring them to perform normality tests on datasets. The research findings indicate that the most common type of error made by non-mathematics students in conducting normality tests is encoding error, accounting for 40.7% of errors. This occurs when students mistakenly compare decimal values between Lcalc and Ltable. Consequently, the conclusions drawn from these normality tests may be inaccurate. Additionally, other types of errors identified include reading error, comprehension error, transformation error, and process skills error.
Usability Media Pembelajaran Geometri Berbasis GeoGebra untuk Meningkatkan Kemampuan Numerasi Mahasiswa Junaidi, Junaidi; Pramestie Wulandari, Nourma
Mandalika Mathematics and Educations Journal Vol 6 No 1 (2024): Edisi Juni
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v6i1.7249

Abstract

The problem in this study is how feasible the GeoGebra-based learning media developed to enhance students' numeracy ability . The objective of this research is to identify the aspects of GeoGebra-based geometry learning media that need improvement. The research employs a mixed-methods approach. The conclusion of this study is that the development of GeoGebra-based learning media should focus on improving accuracy and completeness of the material, alignment with the curriculum, relevance of examples and exercises, visual appearance, interaction, user-friendliness, and adequate technical support. There is a need for more precise, accurate, and comprehensive material presentation. Learning media should ensure that all topics are thoroughly covered according to the applicable curriculum. The content needs to be more aligned with current educational standards to ensure relevance and appropriateness. Examples of mathematics applications in daily life and interactive exercises can enhance students' understanding. The presentation structure should be more logical and organized to facilitate navigation and use by students. The use of interactive tools such as animations and quizzes can help users understand the material. Access time to the media should be accelerated, and visual appeal should be enhanced to attract students' interest in learning. Quick guides and brief tutorials should be available to assist new users.
Analisis Perbandingan Portofolio Saham dengan Metode Mean Varian Satu Kendala dan Dua Kendala Gilang, Gilang Primajati; M. Gunawan Supiarmo; Junaidi
Mandalika Mathematics and Educations Journal Vol 6 No 2 (2024): Edisi Desember
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v6i2.7258

Abstract

Pembentukan portofolio saham yang efesien dapat dimaknai sebagai memaksimalkan keuntungan yang sebanyak-banyaknya seraya meminimalkan resiko kerugian yang mungkin terjadi. Risiko dapat diatasi dengan diversifikasi. Portofolio saham dengan metode efesiensi mean varian berasumsi agar seorang analis saham berinvestasi pada saham yang memiliki risiko bukan yang bebas risiko (risk free asset) dalam portofolionya.  Metode efisiensi mean varian pada portofolio investasi didefinisikan sebagai portofolio yang memiliki variansi yang minimum diantara keseluruhan kemungkinan portofolio yang dapat dibentuk, pada tingkat mean expected return yang sama. Metode efiensi mean varian dapat diperluas dengan satu, dua dan banyak kendala/konstrain dalam penentuan bobot portofolio yang optimal.  Pada artikel ini penulis menganalisis dan membandingkan performa portofolio satu dan dua kendala. Simulasi performa kinerja portofolio diberikan dengan data saham di Bursa Efek Indonesia yaitu  saham dengan kode INTP, SMBR, SMGR dan SMCB. Dari hasil pembobotan saham dengan satu kendala diperoleh hasil INTP -0.118095805, SMBR 1.139563744, SMGR 0.122266351 dan SMCB -0.143734289 sedangkan untuk portofolio dengan dua kendala diperoleh hasil pembobotan INTP 3.4707887, SMBR 1.903454601, SMGR -3.877195164 dan SMCB -0.497085853. Terlihat SMBR selalu positif dan cukup besar pembobotannya yakni dengan satu kendala 1.139563744 dan dua kendala 1.903454601. Artinya saham ini kita memberikan bobot cash dalam investasinya tanpa pinjaman.

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