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Krida Singgih Kuncoro
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Union: Jurnal Ilmiah Pendidikan Matematika
Published by Universitas Sarjanawiyata Tamansiswa
ISSN : 2339224X     EISSN : 25793209     DOI : https://doi.org/10.30738/union
Core Subject : Education,
Education Mathematics
Union: Jurnal Ilmiah Pendidikan Matematika is a peer-reviewed open access journal published three times in a year (March, July, and November). Union: Jurnal Ilmiah Pendidikan Matematika provides a forum for lecturers, academicians, researchers, practitioners, and students to deliver and share knowledge in the form of empirical and theoretical research articles. The scope of Union is Mathematics Education which includes, but is not limited to the following topics: Mathematics Ability, Mathematics Learning Model, Mathematics Learning Media, Curriculum Development, Assessment and Evaluation, Didactical Design Research (DDR), Realistic Mathematics Education (RME), Ethnomathematics, Research and Development (RnD), PISA Task.
Arjuna Subject : -
Articles 642 Documents
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Development augmented reality in problem-based learning: Strengthening students' mathematical communication ability Alfiyanti, Fina; Nasrullah, Anton; Nisa, Ratu Khoirotun; Santika, Aan; Marlina, Mira; Hidayanti, Nur; Ratnasari, Silvia
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 2 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i2.19106

Abstract

Mathematical communication ability is essential, especially in learning geometry to understand trigonometric comparisons. However, many students still face difficulties in communicating mathematical problem-solving processes. Augmented Reality (AR) visualizes 2D and 3D objects, helping solve problems and improving communication. This study aims to develop and evaluate the quality of teaching materials and worksheets (LKPD) assisted by AR on geometric comparison topics to enhance students' mathematical communication ability. The research uses the Plomp development model, which includes initial investigation, design, realization/construction, testing, evaluation, revision, and implementation phases. Validation involves five experts, consisting of two lecturers and three subject teachers, while the practicality test includes 33 high school students in Banten, Indonesia. The study results show that the teaching materials and LKPD achieve an average validity of 88.25% (very valid), practicality of 88.2% (very practical), and effectiveness based on student activity observation sheets of 85.6%. The students’ test results reach 86.6% (very effective). The mathematical communication test also indicates that 10 students are in the moderate category, and 23 students have high communication ability, with an N-Gain of 64.2% (quite effective). Based on these results, the teaching materials and AR-assisted LKPD are valid, practical, and effective, making them suitable for mathematics learning.
E-module based on ethnomathematics comics with the ICARE model to improve students' mathematical representation skills Argadinata, Ayunda; Maharani, Hevy Risqi
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 1 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i1.19114

Abstract

This study aims to develop an ethnomathematics comic-based e-module by applying the ICARE model to improve students' mathematical representation skills. The ICARE model consists of the Introduction, Connection, Application, Reflection, and Extension stages. The research approach used is Research and Development (R&D) with the ADDIE development model, which includes the Analysis, Design, Development, Implementation, and Evaluation stages. The subjects of the study were grade VIII students at a junior high school that had adopted the Merdeka Curriculum. Before being tested on a small scale, the e-module was first validated by experts in the field of materials and media to ensure its feasibility. The research instruments included a validation questionnaire, a test to measure mathematical representation skills, and a questionnaire used to collect student and teacher responses. The results of the study showed that the e-module developed met the criteria of being valid, practical, and effective in improving students' mathematical representation skills. Students responded positively to the e-module because the material presented was more interesting, based on local culture, and helped them understand the concept more deeply. Thus, the e-module based on ethnomathematics comics with the ICARE model can be an alternative innovative teaching material in mathematics learning.
Examination of student’s mathematical literacy in solving PISA questions on space and shape content in terms of metacognitive awareness Rohmah, Erlina Maf'atun; Ubaidah, Nila
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 1 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i1.19123

Abstract

Students that possess mathematical literacy are better able to identify, use, and interpret to solve difficulties in their daily lives. Students' mathematical literacy still needs to be improved, particularly in the areas of space and shape, according to the findings of the PISA survey conducted in Indonesia and observations made at SMA Negeri 10 Semarang. Metacognitive awareness, or students' capacity to successfully plan, monitor, and assess their problem-solving techniques, is one element that contributes to the development of mathematical literacy. Nevertheless, in the context of Indonesian mathematical literacy, this component is still hardly ever thoroughly examined. The purpose of this study is to explore students' mathematical literacy as they work with space-related PISA questions and shape content while taking into account their degree of metacognitive awareness. A descriptive qualitative methodology is employed, and data is gathered via expert-validated questionnaires, mathematics literacy assessments, and interviews. Reducing data, presenting data, and writing conclusions are all steps in the data analysis process.26 students from class X-3 at SMA Negeri 10 Semarang served as the study's subjects. They were divided into three groups low, medium, and high according to the answers to the metacognitive awareness questionnaire. The findings demonstrated that 15.38% of students with low metacognitive awareness could only complete one mathematical literacy test, which is problem formulation. Two indicators creating problems and employing concepts were met by students with moderate metacognitive awareness (65.38%). Formulating, employing, and understanding mathematical concepts were the three markers that students with high metacognitive awareness (19.23%) were able to meet simultaneously. This study confirms the importance of metacognitive awareness in improving mathematical literacy.
Investigation on the impact of learning mathematics using mobile phones at higher institutions in a Tanzanian context Deogratias, Emmanuel; Focus, Festo; Matumba, Emmanuel
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 2 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i2.19124

Abstract

This paper presents the impact of learning mathematics using mobile phones at higher institutions in a Tanzanian context. The quantitative approach was employed in this study for numerical data collection. Two hundred and five students participated in this study. A questionnaire was used while collecting data. Content analysis was used in the analysis process of the collected data. The tools used to analyze data included statistical software such as SPSS, a high-performance programming language and numerical computing environment developed by MathWorks. It was found that a large number of students frequently use mobile phones in learning mathematics. Also, mobile phones help students improve their understanding of mathematical concepts, including solving mathematical problems. They also help students collaborate with their peers while learning mathematics. From the results, using mobile phones supports students to enhance their learning of mathematics in university mathematics classrooms. The study concludes that mobile phone usage has a significant positive impact on students’ mathematics learning by facilitating problem-solving, conceptual understanding, engagement, and collaboration. Furthermore, this research contributes valuable insights to support policymakers and educators in developing strategies and professional development programs for effective mobile learning integration in Tanzanian higher education.
Project-based learning implementation with a cooperative approach on the topic of correlation analysis Darojat, Latifah; Pratama, David
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 1 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i1.19161

Abstract

This study aims to explore the implementation of project-based learning (PBL) with a cooperative approach on correlation analysis material in class XII of SMA Al Islam 1 Surakarta.  In studying correlation analysis material, several problems are often found, including the lack of application skills and also the lack of student involvement in the learning process. Therefore, through this project-based learning activity, students carry out collaborative activities in compiling projects based on real data so that they can better understand the concept of correlation in depth. This study uses a qualitative method and involves 30 students who are grouped into five groups. Each group is given the task of designing and implementing a correlation analysis project between two variables using a collaborative project-based learning approach. Data were collected through observation and student project results. Furthermore, the data was analyzed using data reduction, data display, and conclusion drawing/verifying techniques. The results of the study indicate that this method is effective in providing students with an understanding of the concept of correlation analysis, collaboration skills, communication, and problem solving. The average project score is in the category of developing according to expectations to very developed. Evaluation through a questionnaire showed that 72.41% of students gave positive responses to the learning experience, such as understanding the material, the ability to work together, and data processing using Microsoft Excel. These findings support the effectiveness of project-based learning in facilitating 21st century skills. Overall, this research provides a positive contribution to education. The implementation of Project Based Learning with a cooperative approach can be an alternative effective learning models to build conceptual understanding and collaboration skills in the modern education era.
Analysis of mathematical literacy through pull out photo math box based on augmented reality technology in deaf students Mu'alamah, Naila Nafisatun; Ubaidah, Nila
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 1 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i1.19164

Abstract

This study aims to analyze mathematical literacy through the Pull-Out Photo Math Box based on augmented reality technology in deaf students. The approach used in this study is a qualitative descriptive approach. The research subjects consist of eight deaf students in grade IV at SLB Negeri Semarang, with three students representing different levels of mathematical literacy. The subjects were selected using purposive sampling. Data were collected through mathematical literacy tests, interviews, and documentation. Data analysis was conducted through the stages of data reduction, data presentation, and conclusion drawing. The results show that mathematics learning on plane figures through the Pull-Out Photo Math Box based on augmented reality technology enhances students' mathematical literacy. High-category students are able to meet three indicators of mathematical literacy, medium-category students meet two indicators, while low-category students meet only one indicator. Additionally, all students across the high, medium, and low categories found that learning using the Pull-Out Photo Math Box based on augmented reality technology was an engaging and useful visual medium for understanding plane figures. This study contributes to the field of mathematics education by demonstrating the effectiveness of augmented reality-based learning tools in improving mathematical literacy among deaf students. The findings highlight the potential of innovative visual media in making mathematical concepts more accessible and engaging for students with special needs.
Development of Android-based applications integrated with Tari Piring culture as ethnomathematics learning media for elementary school students Rachman, Kufita; Pangestika, Cahya; Vesya, Siti Raihani; Arbiyanti, Ade Putri
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 1 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i1.19217

Abstract

Technology-based learning must be developed to create interactive learning experiences that enhance students' motivation and understanding of the material. This study aims to develop an Android-based application integrated with Tari Piring as an ethnomathematics learning tool for fourth-grade elementary school students. The subjects of this study were fourth-grade students of SD Negeri Golo. The research method used is the Research and Development (R&D) approach, following the 4-D model, which consists of four stages: defining, designing, developing, and disseminating. Data collection was conducted through interviews and questionnaires. The interview data were analyzed descriptively, while the questionnaire data were analyzed using descriptive statistics. The developed Android-based application received an average score of 3.85 from material experts, with a feasibility percentage of 96.25%, categorizing it as highly feasible. Similarly, media experts provided an average score of 3.85, also with a feasibility percentage of 96.25%. Meanwhile, the practical assessment based on student responses yielded an average score of 3.7, which falls into the applicable category with a percentage of 93%. In conclusion, the Android-based application integrating Tari Piring in ethnomathematics learning is effective for teaching geometric concepts to elementary school students. This research contributes to the advancement of technology-based ethnomathematics learning by incorporating cultural elements into an interactive Android application, improving both the feasibility and effectiveness of mathematics education for young learners.
Ethnomathematics comics of Al-Akbar Mosque: Enhancing elementary students' understanding of geometric shapes Oktavia, Aulia Ika Aulia; Yustitia, Via; Hadi, Susilo; Wijaya, Tommy Tanu
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 1 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i1.19231

Abstract

Learning is evolving rapidly in the 21st century, as evidenced by advancements in science and technology (IPTEK), including the use of comics as a medium for learning mathematics. The incorporation of ethnomathematics comics based on the architectural features of Masjid Al-Akbar Surabaya serves as an innovative learning tool to address issues such as unengaging media and students’ reluctance to learn mathematics. This study aims to: (1) examine the process of developing ethnomathematics comics about the Al-Akbar Mosque of Surabaya to help elementary school students recognize the names and characteristics of geometric structures; (2) assess the feasibility of these comics as a learning medium; and (3) analyze teachers' and students' responses to their implementation in the classroom. This study employs a research and development (R&D) approach using the ADDIE development model, which consists of four stages: analysis, design, development, and implementation. Data collection methods include documentation, surveys, observations, interviews, and literature reviews, while data analysis combines qualitative descriptive and quantitative techniques based on expert validation and Likert-scale responses. The results indicate that (1) the three initial stages of the research process—analysis, design, and development—were successfully carried out according to the established framework; (2) validation data from material experts, linguists, and learning media specialists rated the comics as "highly feasible"; and (3) responses from class II-A teachers, expert teachers, and four class II-A students also confirmed a "highly feasible" rating. These findings suggest that the developed ethnomathematics comics based on the Al-Akbar Mosque are effective and appropriate for elementary school students in learning about geometric structures. This research contributes to mathematics education by integrating ethnomathematics into instructional media, fostering cultural appreciation while enhancing students' understanding of geometric concepts. Additionally, it provides a structured framework for developing ethnomathematics-based learning resources that can be adapted to other cultural and architectural contexts.
Opportunities for curriculum improvement in secondary school mathematics education Machisi, Eric; Tatira, Benjamin
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 2 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i2.19367

Abstract

This study investigates opportunities for enhancing the secondary school mathematics curriculum in South Africa. Employing a cross-sectional survey design, data were collected from a purposive sample of 80 postsecondary students enrolled at higher education institutions across the country. An online questionnaire was administered, and responses were analyzed using the Statistical Package for the Social Sciences (SPSS), focusing on frequency distributions and mean ranks. The findings reveal that while the current mathematics curriculum adequately prepares some students for postsecondary studies, it falls short for others. Key areas identified for improvement include better alignment with tertiary-level mathematics, reforming examination formats, enhancing pedagogical approaches, and increasing collaboration with local industries. Based on these insights, the study proposes several recommendations: offering specialized mathematics tracks, including optional exam questions, reducing exam length, introducing calculus prior to Grade 12, integrating digital tools in instruction, and connecting mathematical learning with real-world industry applications. By foregrounding students’ perspectives, this research promotes a bottom-up approach to curriculum development. The study contributes to the literature by providing empirical evidence on curriculum gaps from the learner’s viewpoint and offering context-specific recommendations to bridge secondary and tertiary mathematics education in South Africa.
Development of design thinking-based mathematics learning media to enhance mathematical critical thinking skills Ariyani, Arneta Mayandha; Prayito, Muhammad; Happy, Nurina
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 2 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i2.19394

Abstract

This research aims to develop an Android-based learning media application using MIT App Inventor to enhance students' mathematical critical thinking skills. The study employs a Research and Development (R&D) approach with the design thinking method, consisting of five stages: empathize, define, ideate, prototype, and test. During the empathize phase, in-depth interviews were conducted with five personas to identify existing issues, which were then summarized into an empathy map. In the define stage, data were analyzed using the How Might We technique to frame actionable problems. The ideate stage involved brainstorming solutions through mind mapping, followed by prototyping the application design based on the identified needs. In the testing phase, the application was evaluated for effectiveness (measured by success rate), efficiency (time-based metrics), and user satisfaction (via the System Usability Scale). Data were collected through questionnaires to assess the application’s viability, efficiency, and alignment with user needs. After completing the design thinking process, a critical thinking competency test was administered to compare learning outcomes on three-variable linear equations before and after using the media. Post-intervention results revealed above-average scores, demonstrating the application’s positive impact on students' mathematical critical thinking abilities. This study contributes to innovative learning media development in mathematics education, offering a simple, interactive, and accessible tool adaptable to individual learning needs.

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