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Rahmat Perdana
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INDONESIA
Interval: Indonesian Journal of Mathematical Education
Published by Cahaya Ilmu Cendekia Publisher
ISSN : 30251389     EISSN : 30217857     DOI : 10.37251/ijome
Core Subject : Education,
Education Mathematics
Interval: Indonesian Journal of Mathematical Education is a peer-reviewed open-access journal established to disseminate state-of-the-art knowledge in mathematics education. Editors will review all submitted manuscripts and then evaluate them by at least two international reviewers through the double-blind review. This is to ensure the quality of the published manuscripts in the journal. Interval: Indonesian Journal of Mathematical Education Journal welcomes high-quality manuscripts resulting from a research project in the scope of mathematics education
Arjuna Subject : Umum - Umum
Articles 112 Documents
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Exploration Ethnomathematics in Traditional Games of Mancala in Africa and Congklak in Indonesia Suharti, Rita; Bhatt, Krishna Prashad; Tolulope, Owolabi Yemi; Sambo, Yahya A
jurnal matematika Vol 3 No 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/ijome.v3i1.1594

Abstract

Purpose of the study: Study this aiming for explore draft ethnomathematics in game traditional Mancala in Africa and congklak in Indonesia use understand relatedness between culture and mathematics in context game. Methodology: With use approach qualitative ethnography, research this collect data through observation participatory, interview in-depth, and documentation to Mancala players in Ghana and congklak in Sumatra, as well as educators at school basis. Research results show that second game this involving draft mathematics like pattern numbers, distribution strategy, operations count, and thinking logical and probable. Main Findings: Experienced players show natural mathematical thinking through efficient strategies. While Mancala remains popular in Ghana, congklak is declining in Indonesia. Observations indicate traditional games have strong potential in culture-based math education. Thus, preservation and innovation are needed to integrate them contextually into learning. Novelty/Originality of this study: The novelty of this research lies in the exploration of the concept of ethnomathematics in the games Mancala in Africa and congklak in Indonesia through a qualitative ethnographic approach, which has not been studied in depth.
Cultural Values and Their Role in Shaping the Adaptation of Realistic Mathematics Education (RME) in Indonesia: A Mixed-Methods Approach Abbas, Sagir Adamu; Quiño, Annabelle M.; Abraham, Nayantara
jurnal matematika Vol 3 No 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/ijome.v3i1.1612

Abstract

Purpose of the study: The main objective of the study is to analyze how cultural factors influence the implementation of RME in the context of mathematics education in Indonesia. Methodology: The method used is a qualitative study employing content/document analysis of curriculum guidelines and instructional materials. Additionally, semi-structured interviews were conducted with six educators, and non-participant observations were carried out in three schools to examine the implementation of Realistic Mathematics Education (RME). Main Findings: The results of the study showed that the success of RME adaptation was influenced by local cultural values, such as community-based approaches and the context of students' daily lives. Novelty/Originality of this study: The novelty of this research lies in the in-depth analysis of the interaction between RME principles and Indonesian cultural characteristics, providing new insights into the development of more contextual and effective mathematics learning strategies.
Numerical Analysis of Flow Through Venturimeter with Variation of Neck Size to Determine Velocity Coefficient and Pressure Drop Beshay, Zakaria Gaber Hanawy; Sin, Sokunthea; Raja, Waleed A.
jurnal matematika Vol 3 No 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/ijome.v3i1.1613

Abstract

Purpose of the study: This study aims to analyze the effect of variations in the size of the venturimeter neck on the velocity coefficient and pressure drop using a numerical simulation method. Methodology: The method used in this study is numerical simulation using SolidWorks 2014 software. The simulated venturimeter model has a neck length variation of 20 mm and 30 mm, with a throat diameter of 10 mm. The fluid used is water with a temperature of 25°C, and the simulation is carried out in the Reynolds number (Re) range of 1000 to 5000. Main Findings: The results of the study showed that the greater the velocity of the incoming fluid, the Reynolds number, flow rate, and pressure drop also increased. In addition, the difference in the length of the venturimeter neck affects the pressure drop, where the venturimeter with a longer neck experiences a greater pressure drop due to the longer duration of the fluid flow. The resulting velocity coefficient is also influenced by the velocity of the incoming fluid, where the higher the velocity, the greater the flow rate value. Novelty/Originality of this study: The novelty in this research lies in the numerical approach in analyzing the relationship between the venturimeter neck size and the velocity coefficient and pressure drop. This approach allows faster and more efficient calculations compared to conventional experimental methods, thus contributing to the development of more accurate and applicable fluid flow measurement techniques.
Mathematics and Combinatorial Thinking: How Computational Ability Influences Problem-Solving in Number Patterns? Tiffani, Khatriya; Manaf, Mohammed Rizzman; Efendi, Riswan
jurnal matematika Vol 3 No 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/ijome.v3i1.1616

Abstract

Purpose of the study: This study aims to analyze students' computational thinking abilities in solving combinatorial problems based on high, medium, and low ability categories. Methodology: This study uses a descriptive qualitative approach with subjects of 33 students of class VIII I State Islamic Junior High School 2 Bondowoso. Data were collected through written tests, semi-structured interviews, and documentation. Data analysis used the Miles and Huberman model (reduction, presentation, conclusion) with triangulation techniques for validation, comparing test results, interviews, and documentation. Main Findings: Students with high and medium computational abilities are able to meet all indicators of computational thinking, including identifying and understanding problems, and converting them into combinatorics. Meanwhile, students with low abilities have difficulty in re-understanding the problems found. Novelty/Originality of this study: This study provides new insights into how students' level of computational thinking ability influences their success in solving combinatorial problems, as well as offers perspectives in developing more effective learning strategies to enhance students' computational thinking ability.
Critical Thinking as a Key to Solving Mathematical Problems: Findings from the TIMSS Framework in Middle Schools Roath, Chan; Alkaki , Zhyan Rafaat Ali; James , Julie S
jurnal matematika Vol 3 No 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/ijome.v3i1.1626

Abstract

Purpose of the study: The purpose of this study was to analyze the influence of critical thinking skills on students' mathematical problem solving based on the TIMSS framework. Methodology: This study uses a quantitative approach with a correlational survey design. The population of the study was junior high school students with a sample of 200 students selected by random sampling. Data collection used the Critical Thinking Ability Test and the Mathematics Problem Solving Test based on TIMSS. Data analysis was carried out using descriptive statistics, Pearson correlation tests, and simple linear regression using SPSS. Validity tests used content and construction tests, and reliability was tested with Cronbach's Alpha (0.745). Main Findings: The results of this study indicate a significant positive relationship between students' critical thinking skills and mathematical problem solving. The average score of critical thinking skills and mathematical problem solving is in the moderate category. The evaluation indicator has the highest score, while inference and synthesis have the lowest scores. The results of the Pearson correlation test showed a moderate relationship (r = 0.550), and the simple linear regression test showed that critical thinking skills significantly affect mathematical problem solving (R² = 0.303, p < 0.05). Novelty/Originality of this study: This study offers a fresh perspective by examining students’ critical thinking skills within the context of mathematical problem-solving using the TIMSS framework. The results enhance existing literature by demonstrating a strong link between critical thinking and effective problem-solving.
Fun Strategies for Learning Mathematics: Exploring the Potential of Combinatorial Game Theory in Discrete Mathematics Klinaku, Leutrim; Elumba, Ledy J; Abbas, Nada Mohammed
jurnal matematika Vol 3 No 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/ijome.v3i1.1629

Abstract

Purpose of the study: This study aims to examine the effectiveness of using combinatorial game theory in discrete mathematics learning to improve students' understanding and interest in learning. Methodology: Using the Mixed Methods approach, quantitative data were collected through a quasi-experimental design with a pretest-posttest control group, while qualitative data were obtained through interviews and observations. The sample consisted of 60 grade XI students divided into experimental and control classes. Main Findings: The results of the analysis showed that the average gain score of students' conceptual understanding in the experimental class (0.68) was significantly higher than the control class (0.32) with a t-test significance value of 0.001 (p < 0.05). In addition, the motivation questionnaire showed an increase in the average score from 2.9 to 4.1 on a Likert scale of 1–5. Novelty/Originality of this study: Qualitative findings reinforce that game-based strategies encourage active participation, collaboration, and positive perceptions toward discrete mathematical theory.
Trends in International Mathematics and Science Study (TIMSS): A Comparative Analysis of Mathematics Achievement Rubio, Marilyn T.; Mensah, John; Sokpe, Benjamin
jurnal matematika Vol 3 No 1 (2025): June
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/ijome.v3i1.1733

Abstract

Purpose of the study: This study investigates global trends in mathematics education using TIMSS data to understand factors influencing student achievement. Methodology: Quantitative analysis of TIMSS datasets from the latest cycles was conducted using statistical tools such as SPSS and R for trend analysis, regression models, and comparative performance evaluations. Main Findings: Socioeconomic factors, teacher qualification, and curricular alignment were strongly associated with variations in student performance across countries. Novelty/Originality of this study: The study offers a detailed comparative analysis of the latest TIMSS results, emphasizing underrepresented countries, thereby contributing to strategies for improving global mathematics education.
Picture Media as a Solution for Mathematics Learning: A Classroom Action Study on Fourth Grade Elementary School Students Winarni, Arlisa Tri; Kisyanto, Kisyanto
jurnal matematika Vol 3 No 2 (2025): December
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/ijome.v3i2.2511

Abstract

Purpose of the study: The aim of this research is to improve mathematics learning outcomes by using image media for angle measurement material for fourth grade elementary school students. Methodology: This classroom action research used observation sheets, essay-type achievement tests, lesson plans, and image-based learning media. The method used followed two cycles of Classroom Action Research (planning, action, observation, and reflection). Data were collected through student achievement tests and then analyzed descriptively using percentage calculations without special software. Main Findings: The use of image-based learning media improved mathematics learning outcomes of fourth-grade students. Classical mastery increased from 25% in the pre-action stage to 50% in Cycle I, showing a 25% improvement. In Cycle II, classical mastery reached 83.3%, indicating a further increase of 33.3% and exceeding the minimum mastery criterion of 75%. Novelty/Originality of this study: This study offers novelty by systematically applying image-based learning media within a classroom action research framework to improve elementary students’ understanding of angle measurement. It provides practical evidence of step-by-step improvement across cycles, enriching empirical knowledge on effective visual media integration in primary mathematics learning.
Understanding Elementary Students’ Mathematics Learning Difficulties: A Qualitative Analysis of Internal and External Factors Tyas, Ni’mah Mulyaning; Rahayu, Tyas Puji; Sutrisno, Sutrisno; Muati, Sri
jurnal matematika Vol 3 No 2 (2025): December
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/ijome.v3i2.2512

Abstract

Purpose of the study: This study aims to describe the factors causing mathematical difficulties. Methodology: This qualitative study involved 25 students who indicated they were having difficulty learning mathematics. Data collection techniques included observation, interviews, questionnaires, documentation, and field notes. Data analysis involved data reduction, data presentation, and drawing conclusions. Main Findings: The types of learning difficulties experienced by students include difficulty understanding the concept of fractional comparison, difficulty calculating whole numbers, and difficulty solving word problems. Factors contributing to students' learning difficulties include internal and external factors. Internal factors include negative attitudes toward learning mathematics, low motivation to learn, suboptimal physical health, and sensory impairment. External factors include a lack of variety in teaching methods, suboptimal use of learning media, school infrastructure, and family environment. Novelty/Originality of this study: Providing information about the causes of difficulties in learning mathematics that are often experienced by students, so that efforts can be made to reduce difficulties in learning mathematics.
From Problems to Progress: Improving Mathematics Learning Outcomes through Problem-Solving Instruction Nguyễn, Minh Tuấn; Alorgbey, Bernard
jurnal matematika Vol 3 No 2 (2025): December
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/ijome.v3i2.2519

Abstract

Purpose of the study: The aim of this research is to improve students' learning outcomes in Mathematics by using the Problem Solving method. Methodology: The research conducted used Classroom Action Research. Data were obtained from qualitative and quantitative data. Data collection techniques included observation, testing, documentation, and interviews. The data analysis method used both qualitative and quantitative data. Main Findings: Based on the results of data analysis, it is known that, after using the Problem Solving method, student learning outcomes have increased. This can be seen from the results of the pre-test and post-test given to students, which always increased in each cycle. The increase in student learning outcomes in cycle 1 was 71.88% and in cycle II 87.10%. There was an increase in the completeness of student learning outcomes by 5.31%. Novelty/Originality of this study: This study introduces a structured problem-solving instructional model implemented through classroom action research to regularly improve students' mathematics learning outcomes. Unlike previous studies, it integrates iterative reflection cycles with authentic classroom problems, providing practical evidence on how problem-solving instruction directly enhances students' engagement, conceptual understanding, and achievement.

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