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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 558 Documents
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Innovative smart box learning media for enhancing elementary students’ conceptual understanding of arithmetic operations Arbiyanti, Ade Putri; Rachman, Kufita; Vesya, Siti Raihani; Puteri, Ni Putu Miranda
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.v13i2.19669

Abstract

Concept understanding is important to build in students, one of which is through learning media that can accommodate student needs. This research aims to develop the Smart Box as a learning medium for the mathematical operations of multiplication and division that is feasible and practical. This research is a research and development (R&D) study using the 4-D model, which consists of the stages of define, design, develop, and disseminate. The sample for this research consists of 25 fourth-grade students from SD Negeri Jurugentong, selected using random sampling from the population of fourth-grade elementary school students. Data collection instruments included interview guidelines and questionnaires. Interview data were analyzed descriptively, while questionnaire data were analyzed using descriptive statistics. The feasibility of the Smart Box media received an average score of 4.4 or 87%, categorised as "Very Feasible" by content experts, and an average score of 4.4 or 87%, categorised as "Very Feasible" by media experts. The practicality test obtained an average score of 4.6 or 91% including “Very Practical” by students. In conclusion, this research produces Smart Box Media that can contribute to supporting the learning of the concept of multiplication and division operations for grade IV elementary school students. This research contributes to mathematics education by providing a theoretically grounded, practically validated, and developmentally appropriate learning medium that enhances students' conceptual understanding of multiplication and division through real and interactive experiences.
Analysis of seventh-grade students’ critical thinking skills in solving narrative problems using linear equation content Yuzaefa, Aina Dinda; Happy, Nurina; Albab, Irkham Ulil
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.v13i2.19708

Abstract

Students are required to think critically when solving math problems related to everyday life. However, many still do not pay enough attention to the importance of critical thinking skills in the education system, and teachers tend to guide students to solve problems correctly rather than express ideas or notions. The purpose of this research is to assess and describe students’ critical thinking skills in solving story problems involving linear equations, reviewed from the student’s initial abilities. The method used in this research is descriptive qualitative. The purposive sampling and snowball sampling techniques were used as methods for subject selection in this study. The research subjects consist of 6 seventh-grade students from SMP Negeri 3 Randudongkal selected based on specific criteria, where students had initial ability scores of 80-90, good communication, and were recommended by the teaching teacher. The triangulation used in this research is source triangulation. Written tests and in-depth interviews were used as data collection techniques in this study. The data analysis stage used was reducing data, presenting data, and deriving a conclusion. The analysis results obtained from the written critical thinking skills test and interviews in the research show a conclusion that students with high initial abilities can apply four out of six FRISCO critical thinking skill indicators, namely the indicators of Focus, Reason, Inference, and Clarity in solving story problems involving one-variable linear equations. However, they require a greater understanding and precision to apply the indicator of Situation and Overview. Most students failed to explain their knowledge during the interview, indicating a gap between their written and verbal critical thinking skills. This research can serve as a reference for further studies related to critical thinking skills and help teachers design lessons that pay more attention to the critical thinking abilities of students.
Development of flipbook-based e-worksheet in differentiated learning to improve students' mathematical problem-solving skills on circle topics Nurhayati, Nunu; Farhah, Nazwa; Taufik, Azin
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.v13i2.19711

Abstract

This research aims to develop an electronic student worksheet (e-worksheet) using flipbook media to enhance students’ mathematical problem-solving skills, focusing on the topic of circles through differentiated learning strategies. The instructional content was designed to accommodate diverse learning preferences auditory, kinesthetic, and visual, as well as various levels of prior academic achievement (high, medium, and low). This study involved 35 grade XI-3 students at a high school in Kuningan Regency. Data collection included validation from subject matter and media experts, practicality evaluations by teachers and students, and analysis of students’ pre-test and post-test scores. Subject expert validation yielded a 90% approval rate, while media experts rated it at 86%. Practicality assessments showed 93% from teachers and 88% from students. The average N-Gain score was 0.79, indicating a high level of learning improvement. The conclusion of this study regarding the development of flipbook-based e-worksheet is stated to be valid, practical, and effective in improving students' mathematical problem-solving skills. This study contributes to encouraging differentiated learning practices through interesting digital devices, increasing insight and skills regarding appropriate or good and interesting worksheet for use by students, and supporting the development of adaptive learning media according to student needs, curriculum, and technological developments.
Improving students' problem solving ability in solving mathematical problems on linear function topic through PBL model assisted by GeoGebra with TaRL approach Pradiarti, Refni Adesia; Fuady, Anies; Puspitasari, Lila
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 3 (2025): In Progress
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i3.19871

Abstract

The aim of this research is to enhance mathematical problem-solving abilities in linear function content through the use of GeoGebra and the Teaching at the Right Level (TaRL) technique in conjunction with the Problem Based Learning (PBL) learning model. This research is a classroom action research conducted in class VIIID of SMPN 25 Malang, with 32 students as the subjects of the study. The planning, execution, observation, and reflection phases were all included in the two cycles of the study. The instruments used in this study are problem-solving ability tests and student activity observation sheets. The results show that students' problem-solving skills improved from an average of 39.25% (pre-test) to 57.25% in cycle I, and further increased to 81.77% in cycle II. The classical completeness based on the class average score also increased from 28.12% (pre-test) to 65.62% (cycle I), and then reached 81.25% (cycle II). The use of GeoGebra in the PBL model helped students understand the graph of linear functions, while the TaRL approach helped tailor the learning to the diverse needs of the students. This study proves that the combination of the PBL model and TaRL approach can effectively enhance students' mathematical problem-solving skills. This study contributes to mathematics education by demonstrating the practical integration of differentiated instruction (TaRL) and interactive technology (GeoGebra) within a PBL framework to significantly improve students’ problem-solving abilities in linear function topics.
Error analysis of mathematics students in solving mathematical finance problems Sari, Intan; Mawarni, Mawarni
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.v13i2.19873

Abstract

Mathematical Finance is a course in the Mathematics Study Program. This course is highly useful in both the workplace and everyday life. However, the results of the student’s final exams (UAS) show unsatisfactory outcomes. This research is a descriptive qualitative study that aims to identify the types of errors in students' answers when solving Financial Mathematics final exams. The subjects of this research are students in the even semester of the Mathematics study program at Universitas Samudra. The data collection technique in this research is a test. The results showed that the standard errors found in students' answers were concept errors, namely errors due to students not understanding the concept, as well as procedural errors, which occurred when students had difficulty in linking concepts to the steps of the process. Additionally, there is a slip error that occurs when students are in a hurry to solve the problem, although this error is not dominant. This study concludes that a lack of conceptual understanding and procedural mainly causes students difficulties in Mathematical Finance. These findings contribute to the development of effective learning strategies and the creation of teaching materials by emphasizing the importance of understanding concepts and procedures in problem-solving.
Investigation on the factors leading to negative attitudes towards mathematics among secondary school students in Tanzania Deogratias, Emmanuel; Iddi, Aziza
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 3 (2025): In Progress
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i3.19952

Abstract

This study investigated the factors contributing to the negative attitudes—often perceived as "hatred"—towards mathematics among secondary school students. A quantitative research approach was adopted, involving a total of 200 student respondents. Data were collected through structured questionnaires and analyzed using the Statistical Package for the Social Sciences (SPSS). Findings from the study revealed several key factors influencing students’ negative perceptions of mathematics. These included the use of unengaging and ineffective teaching methods, inadequate support from teachers when students encountered difficulties, peer influence, the perceived complexity of mathematical concepts, challenges related to the language of instruction, scarcity of instructional resources, and the use of punishment in the learning process. To foster a more positive attitude towards mathematics among students, the study recommends enhancing access to adequate learning materials and resources; encouraging collaboration between teachers and parents to promote the value of mathematics education; adopting innovative and interactive teaching techniques; minimizing the use of corporal punishment in schools; and implementing reward-based systems to acknowledge student progress and efforts in mathematics.
Newman’s error analysis at mathematics pre-service teachers in solving literacy problems Nuha, Muhammad 'Azmi; Alfathy, Ragil Meita; Sangco, Retchelle P.
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.v13i2.20038

Abstract

This study aims to: (1) to provide an overview of the errors of prospective mathematics teacher students in solving mathematics literacy problems based on Newman's Error Analysis, and (2) to provide an overview of the factors that cause prospective mathematics teacher students to make errors in solving mathematics literacy problems. This research is qualitative research using a grounded theory approach. The subjects of this study are 92 prospective mathematics teacher students in the study program of Tadris Mathematics UIN Prof. K.H. Saifuddin Zuhri Purwokerto. The data collection techniques in this study are: (1) test and (2) interview. The analysis technique in this study uses qualitative data analysis techniques consisting of (1) data reduction, (2) data presentation, and (3) conclusion drawn. The data validity technique used in this study is triangulation. The results of the study show that: (1) reading error, comprehension error, and encoding error are not problems for students in solving mathematical literacy problems, transformation errors are problems for students because the errors are found in all four mathematics literacy questions, and process skill errors are problems for students in mathematics literacy questions that measure the ability to connect mathematical facts/concepts to make problem-solving procedures work, and (2) factors that cause prospective mathematics teacher students to make errors in solving mathematical literacy problems include: (a) errors in making mathematical models that involve time, (b) errors in length accuracy, (c) errors affected by images, (d) errors in replacing unknown values with spelling, (e) errors in recalling information, (f) errors in estimating the shape of the 3D Geometric Shapes, (g) errors in remembering mathematical formulas,  (h) error in choosing adjacent concepts, (i) error not recognizing mathematical concepts, (j) error preparing calculations, (k) error converting units, and (l) error inferring with estimates.
Enhancing mathematics learning motivation in elementary school students through the make a match learning model Azalia, Rahma Tsani; Mauranissa, Malzia Nazma; Aqilah, Rifa Nurul; Yusup, Rinaldi; Rasid, Nor Syazwani Mohd
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.v13i2.20045

Abstract

This research aims to enhance the mathematics learning motivation of elementary school students through the implementation of the Make a Match learning model. The research background is based on the low motivation of students in participating in mathematics lessons, which impacts the lack of engagement and suboptimal learning outcomes. The method used is Classroom Action Research (CAR) with two cycles conducted in grade IV of SDN Bojongkawung, Sukabumi Regency, in the 2024/2025 academic year. The research subjects consisted of 18 students, and data were collected through observation, interviews, and attitude assessment instruments that included indicators of cooperation, responsibility, critical reasoning, and creativity. The research results indicate a significant increase in students' learning motivation, marked by an increase in the average attitude score from 40% in the pre-test to 55% in cycle I, and 74.25% in cycle II. The application of the Make a Match model creates a fun, interactive, and collaborative learning atmosphere, thereby encouraging students to be more active and enthusiastic in mathematics learning. Thus, the Make a Match model proves to be effective as a learning strategy that can enhance the learning motivation of elementary school students. This study contributes to the development of learning strategies that can enhance students' mathematics learning motivation through the implementation of an interactive and collaborative learning model.

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