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Riemann : Research of Mathematics and Mathematics Education
Published by Universitas Katolik Santo Agustinus Hippo
ISSN : 27218848     EISSN : 2721883X     DOI : https://doi.org/10.38114/pgnbcd43
Core Subject : Education,
Education Mathematics
Riemann: Research of Mathematics and Mathematics Education Journal Riemann is peer-reviewed journal that contains the work of the field of educational research or teaching mathematics, mathematics, mathematical applications, mathematical computerization, and models of mathematics education in the learning process. Journal Riemann is published Thrice a year, every April, September, and December. The focus and scope of the Journal Riemann covers the following topics: Mathematics Teaching Mathematical Applications Mathematical Computerization Model of Mathematics Education
Arjuna Subject : Ilmu Sosial - Pendidikan
Articles 10 Documents
 1 
Search results for , issue "Vol. 7 No. 1 (2025): EDISI APRIL" : 10 Documents clear
Data-Driven Insights for Tourism Development in East Java Using Directed Graphs Pradananta, Galih; Shofi Dana, Badara
Riemann: Research of Mathematics and Mathematics Education Vol. 7 No. 1 (2025): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/reimann.v7i1.97

Abstract

This study aims to analyze the tourism network in East Java using Google Trends data and directed graph models. Data were collected based on search queries combining the keyword "wisata" (tourism) with city or regency names in East Java for the year 2023. The analysis employed the PageRank algorithm to identify key network hubs and the Adamic-Adar index to predict new connections between regions. Spatial visualization was conducted using QGIS, while network analysis was carried out using NetworkX. The results revealed that Malang and Surabaya act as central hubs in the tourism network, with high connectivity to other regions. Meanwhile, regions such as Pacitan were identified as isolated nodes within the network. Based on these findings, the study recommends strategies to enhance inter-regional connectivity, including infrastructure development and integrated tourism promotion. This study provides data-driven insights that can assist tourism authorities in improving the attractiveness and sustainability of the tourism sector in East Java.
Implementation of Elementary School Mathematics Questions Based on Numeracy Literacy Darmawan, Puguh; Nugroho, Purna Bayu; Darmayanti, Vivi
Riemann: Research of Mathematics and Mathematics Education Vol. 7 No. 1 (2025): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/reimann.v7i1.88

Abstract

The purpose of this research was to know the implementation of numeracy literacy-based questions in schools. The research method used in this research is descriptive research, namely a type of research that aims to provide an overview of a certain phenomenon. The data collection instrument was a questionnaire. The research period was in June-July 2023, consisting of students in grades 4, 5 and 6 of SDN 1 Sidorejo. The research data was analyzed descriptively quantitatively in the form of percentages. The research results showed that the question statements given by the teacher were carried out using arithmetic operations, 81% often and 19% rarely. Question statements in the form of reading or descriptions was always 64.5% and often 35.5%. The question statement was accompanied by a graph, 87% rarely and 13% never. The question statements were accompanied by a table, 71% often and 29% rarely. The question statements were accompanied by pictures, 48% frequently and 52% rarely. The question statements were accompanied by a diagram, 9.5% always, 81% often, and 9.6% rarely. The question statement required making estimates or conjectures, 6.5% often, 29% rarely, 64.5% never. The question statement required determining how to solve the problem in the question, 19.4% always, 42% often, 25.8% rarely, and 12.6% never. Based on the results of the analysis above, the using of literacy questions in learning activities was still not optimal. This can be seen from aspects of literacy-based questions that were still not fully implemented.
Analysis of Mathematical Creative Thinking Ability after Experiencing Learning of Expansions of Numbers Toward Realistic Mathematics Learning Approach Erwin; Julie, Hongki
Riemann: Research of Mathematics and Mathematics Education Vol. 7 No. 1 (2025): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/reimann.v7i1.20

Abstract

This research aims to analyze the mathematical creative thinking ability of grade VIII students after participating in Realistic Mathematics Learning (PMR) approach on the material of Exponential Number at Bruder Junior High School, Pontianak. The research method used was design research. The subjects in this research were VIII grade students at Bruder Junior High School, Pontianak in the 2023/2024 academic year, with the experiment class in VIII-B and the research class in VIII-G. Data collection was done through tests, interviews, and documentation. The instruments used in the data collection process were test sheets, and interview guideline sheets. The instrument and data validation technique used in this research is validation of the supervisor and uses triangulation theory to test the validity of data obtained from the field. The data analysis process in this research is data reduction, data presentation, conclusion drawing. The results of this research are out of 27 students, three students (11%) have high creative thinking skills, 22 students (81.5%) have moderate creative thinking skills, and two students (7.5%) have low creative thinking skills.
The Effect of Implementing CTL and PBL Models on Students' Mathematical Problem-Solving Ability Wulan Sari, Nevy; Huda, Nizlel; Kumalasari, Ade
Riemann: Research of Mathematics and Mathematics Education Vol. 7 No. 1 (2025): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/reimann.v7i1.47

Abstract

This experimental research with a quantitative approach will test several learning models on students' mathematical problem solving abilities. The models used are CTL and PBL. This study involved three sample classes including CTL, PBL and Direct Instruction classes. In each learning model, the differences between the three will be examined to see their influence on students' mathematical problem solving abilities. The quantitative analysis used is the Tukey test with a significance level of 0.981. Meanwhile, the direct learning model shows a significance value of 0.024, which means there is no significant influence. Thus, the PBL and CTL learning models have more influence on mathematical problem solving abilities than direct instruction.
Analysis of Mathematical Problem-Solving Ability in Terms of Students' Learning Style on Arithmetic Series and Sequence Material Jean, Anggelica; Ellissi, Wike
Riemann: Research of Mathematics and Mathematics Education Vol. 7 No. 1 (2025): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/reimann.v7i1.62

Abstract

The purpose of this study was to describe the problem solving ability of each type of learning style of students in class XI IPA SMA Negeri 2 Ngabang in solving math problems on the material of arithmetic rows and series. The type of research used is descriptive qualitative research. Data collection techniques using questionnaires, tests and interviews. The research subjects consisted of 6 students of class XI IPA SMA Negeri 2 Ngabang. Subject selection based on purposive sampling technique. Data analysis techniques used in this study are data reduction, data presentation and conclusion drawing. The results of this study indicate 1) students with a visual learning style are able to understand the problem well, able to make a solution plan, able to carry out the plan and can recheck the answer results by looking back at the problem and checking the calculations, 2) students with an auditory learning style are able to understand the problem well, have not been able to make a solution plan, not yet able to implement the plan and at the stage of checking back auditory students can recheck the results of the answer by looking back at the problem and checking the calculations, 3) students with kinesthetic learning styles are able to understand the problem well, are able to make a solution plan, have not been able to at the stage of implementing the plan and at the stage of checking back kinesthetic students can recheck the results of the answer by looking back at the problem and checking the calculations. This research can help students to know the problem solving process in solving math problems.
Analysis of Students' Errors in Solving HOTs-Based Mathematics Problems Using The Newman Procedure Billa, Nazla Salsa; Manurung, Sri Lestari
Riemann: Research of Mathematics and Mathematics Education Vol. 7 No. 1 (2025): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/reimann.v7i1.70

Abstract

One strategy to improve students' mathematical competence in education is to train them to use High Order Thinking Skill (HOTS)-type questions. HOTS is an expertise in the process of critical, reflective, metacognitive, logistical, and creative thinking possessed by students. Mistakes made by students in working on High Order Thinking Skill (HOTS) type math problems need to be analyzed; one that can be used is the Newman analysis procedure error. Therefore, this study aims to analyze students' errors in solving HOTS problems using the Newman procedure. This study uses a qualitative descriptive method. The subjects of the study were 59 students of SMA Negeri 7 Medan, class XI IPA. The researcher selected 6 students, comprising 2 high-category students, 2 medium-category students, and 2 low-category students. The data collection techniques used by the researcher were essay tests, interviews, and documentation. The results of the study obtained 4 types of errors, namely errors in understanding the problem (comprehension) made by students of 79.10%; transformation errors (transformation) made by students of 43.37%; process skill errors (process skill) made by students of 24.29%; and errors in writing the final answer (endcoding) made by students of 74.01%. Therefore, the most common errors made by students are errors in understanding the problem (comprehension), made by 79.10% of students. This study is expected to be useful for teachers to provide information about the location of student errors in working on HOTS-type math problems.
Development of Learning Modules on Circles Using Augmented Reality for Eighth-Grade Students Diana Sefti; Dodik Mulyono; Nur Fitriyana
Riemann: Research of Mathematics and Mathematics Education Vol. 7 No. 1 (2025): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/reimann.v7i1.73

Abstract

This research aims to develop an augmented reality-assisted circle learning module for 8th-grade students at SMP Negeri 4 Lubuklinggau that is valid, practical, and has potential effects. The study employs the 4-D development model (define, design, develop, and disseminate). The augmented reality-assisted circle learning module is deemed valid based on language validator scoring 0.85, media validator scoring 0.87, and content validator scoring 0.86. The summary of validator test results shows high scores with an average of 0.88. Practicality results from teachers show 89.33 and from small group student practicality are 92.85, indicating that the module scores high with an average of 86.26, thus deemed very practical. The learning module demonstrates potential effects on student learning outcomes, where 30 students successfully completed with a percentage of 93.75, categorized as successfully completing the Minimum Completion Criteria (KKM) set at 70.
Analysis of Numeracy Literacy Abilities in Solving Minimum Competency Assessment Tasks Based On Students' Cognitive Styles Muharini, Diah Tri Muharini; Prihatin, Iwit; Irvandi, Wandra
Riemann: Research of Mathematics and Mathematics Education Vol. 7 No. 1 (2025): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/reimann.v7i1.84

Abstract

This study aims to analyze students' numeracy literacy skills in solving Minimum Competency Assessment (AKM) problems based on their cognitive styles, focusing on reflective and impulsive cognitive styles. The research employs a qualitative descriptive method, enabling an in-depth exploration of students' numeracy literacy abilities at MTs Negeri 01 Pontianak. Data collection techniques include AKM tests, the Matching Familiar Figure Test (MFFT), and interviews. The findings indicate that a reflective cognitive style significantly influences students' ability to solve AKM problems. Students with high numeracy literacy skills meet all numeracy literacy indicators. Meanwhile, students with moderate numeracy literacy skills fail to meet one indicator, namely interpreting. Students with low numeracy literacy skills can only fulfill one indicator, namely formulating. On the other hand, the impulsive cognitive style also affects how students approach AKM problems. Students with high numeracy literacy skills fulfill all numeracy literacy indicators. In contrast, students with moderate numeracy literacy skills meet only one indicator, namely applying. Students with low numeracy literacy skills fail to meet any of the indicators. This research highlights the importance of developing learning strategies that consider students' cognitive styles to enhance their numeracy literacy skills.
Effectiveness of Educational Game Method in Improving The Concept of Mathematical Operations Hisda, Laylatul; Wulan, Lalu Gede Damar; Ihwani, Ivan Luthfi; Maharani, Andika Ellena Saufika Hakim
Riemann: Research of Mathematics and Mathematics Education Vol. 7 No. 1 (2025): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/reimann.v7i1.85

Abstract

The low emphasis on mathematical operation concepts in elementary school students is a problem that is often encountered. The educational game method in learning can improve the idea of mathematical operations. The quantitative study was conducted by collecting Pretest-Posttest answers in offline worksheets in the classroom. The research subjects were 5th-grade students of SD Negeri 4 Mataram. We analyzed the data by paired sample t-test to see whether the initial hypothesis was accepted or rejected. Based on the results, it is observed that the use of educational game methods can significantly improve the concept of mathematical operations for 5th-grade students. The obtained grades increase from a minimum of 25% to a maximum of 100%, with an average increase of 57.22%. Based on these findings the researcher provides the following recommendations: (1) Teachers should present variations of math learning so that students are not bored and interested during the learning process (2) Schools should support learning by providing the necessary learning materials so that learning objectives can be achieved. (3) Researchers should study methods other than educational game methods so that they can provide recommendations to teachers regarding effective learning methods to be applied in learning.
Implementation of Magic Book to Improve Critical Thinking and Mathematical Communication Abilities of Elementary School Students Faizah, Hanim; Sugandi, Eko; Mutianingsih, Ninik; Prayitno, Lydia Lia
Riemann: Research of Mathematics and Mathematics Education Vol. 7 No. 1 (2025): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/reimann.v7i1.86

Abstract

The use of digital mathematics teaching materials is one alternative to improve students' 21st century skills in mathematics learning. Mathematics Digital Creative (MAGIC) Book is one of the digital teaching materials that has been developed to improve students' critical thinking and mathematical communication skills. This quantitative research uses an experimental approach with a one-shot case study design. The subjects used in this study were four schools in the Surabaya and Sidoarjo areas, with a sample size of 65 students. The results of data analysis show that the average value of students' critical thinking skills is 74.29 with the highest value of 91.67 and the lowest value of 43. The average value of mathematical communication skills is 97.9 and the lowest is 40. The t-statistical test found that the t-count value was 4.604 with a degree of freedom of 128 and sig. of 0.037 which is greater than the value of α = 0.05 and the mean difference value of 9.73. It can be concluded that the application of MAGIC Book in mathematics learning in Elementary Schools can provide positive results in improving students' critical thinking and mathematical communication skills, especially in the main material of Greatest Common Divisor (GCD) and Least Common Multiple (LCM).

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