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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 student worksheets to enhance computational thinking skills in 7th grade students on ratio material Mustaqimah, Utami Puspita Sabilla; Supratman, Supratman; Lestari, Puji
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 3 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i3.17611

Abstract

Computational thinking is a theory born in computer science that applies computational principles to solve a problem. It is a new concern in the PISA 2021 mathematical assessment to accommodate human resources needs that can compete in the 21st-century digitalization era. This study aims to develop a learning tool called student worksheet (LKPD) that integrates indicators of computational thinking skills into the material ratio. The method used is Research and Development (R&D), with the subject of research being 32 students in one Junior High School in Ciamis Regency. The data collection technique is done by observation, interview, and questionnaire given to material experts, media experts, and students. The data were analyzed quantitatively using descriptive product validity and practicality scores. The results showed that the assessment of material experts, including aspects of legality and morality, the feasibility of content, the feasibility of presentation, and aspects of computational thinking, received a level of validity of 99%, so it is included in the category of very valid. Likewise, the assessment of media experts covering anatomy, graphics, and use of language was declared very valid, with a validity rate of 82 %. The product's practicality gets a very practical category with an average score of 86% covering material aspects, use of language, interest, and aspects of computational thinking. The products that have been developed are considered valid and practical for use as educational resources for learning ratios and enhancing computational thinking ability.
Development of an ExeLearning-based mathematics e-module featuring cloze activities: Proportion and direct proportion materials for 7th grade students Melliawati, Melliawati; Prastowo, Aang Yudho; Azmi, Roma Doni
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 2 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i2.17680

Abstract

This study aims to determine the validity, practicality, and effectiveness of eXeLearning-based mathematics learning e-modules containing cloze activities on proportion and direct proportion materials. The subjects of this study were 14 seventh-grade students from SMP N 1 in the Posek Islands. The type of research is R&D using the ADDIE model: Analysis, Design, Development, Implementation, and Evaluation. Data collection methods included questionnaires and tests. The validity test results from the material experts yielded a score of 80%, and the media experts' score was 90%, indicating that the developed e-module meets the valid criteria. The student practicality test results averaged 87%, and the teacher practicality test results averaged 90%. The effectiveness calculation using the n-gain score was 0.89, indicating high effectiveness. Based on the validation process, practicality test, and effectiveness test, the eXeLearning-based mathematics learning module containing cloze activities on proportion and direct proportion materials is declared valid, practical, and effective. The developed e-module can help students understand the material, making it suitable for seventh-grade junior high school students.
Exploration of conceptual understanding and values in mathematics among prospective mathematics teachers Novikasari, Ifada; Rahmawati, Lily; Elebiary, Noor
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 2 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i2.17714

Abstract

The study examines the relationship between understanding mathematical concepts and mathematical values among prospective teachers at a state university in Central Java. The research employed a qualitative approach with content analysis, involving a mathematical concept understanding test and in-depth interviews with students at high, medium, and low ability levels. The results show that students with high ability tend to possess strong mathematical values like accuracy, perseverance, and curiosity, which enable them to grasp complex mathematical concepts. In contrast, students with low ability struggle to comprehend basic mathematical concepts and often rely on rote calculation and formula use. The findings suggest that differentiated learning strategies are necessary to cater to the diverse levels of mathematical concept understanding among prospective teachers. Enhancing mathematical values can be a key factor in improving conceptual understanding in mathematics education.
Improving understanding of place value of numbers through the STAD type cooperative learning model and media stick box Luviana, Rika; Irawati, Riana; Isrok'atun, Isrok'atun
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 3 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i3.17719

Abstract

The background of this research highlights that students often struggle to understand the place value of numbers, as each digit in a number represents a value based on its position. This challenge arises because the learning process lacks the use of engaging media and relies heavily on one-way interactions. To address this issue, a teaching approach that incorporates media and promotes active student involvement is required. This research implements the STAD-type cooperative learning model assisted by a stick box to enhance students' understanding of place value concepts. The study employs a quasi-experimental nonequivalent control group design method, with fifth-grade students from public elementary schools in North Sumedang District as the population. The primary research instrument is an essay test designed to measure conceptual understanding, supplemented by non-test instruments such as observations and questionnaires to collect additional data. The findings indicate that the STAD-type cooperative learning model assisted by a stick box significantly improves students' understanding of the place value concept, with a gain score of 0.746 categorized as high. In contrast, the conventional learning model resulted in a gain score of 0.178, categorized as low. Thus, it can be concluded that there is a significant difference in conceptual understanding of place value between students who learn using the STAD-type cooperative model with stick box assistance and those who engage in conventional learning methods.
Analysis of students’ difficulties in solving probability questions: The case of advanced certificate of secondary education examination in Tanzania Mrope, Fadhili Mustafa; Deogratias, Emmanuel
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 3 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i3.17730

Abstract

This study investigates students' performance in solving probability-related questions in the Advanced Certificate of Secondary Education Examination (ACSEE) in Tanzania. The purpose is to identify the challenges students face when tackling these problems and provide insights for improving their performance. Using analysis of exam responses, the study reveals that many students struggle with probability questions, particularly those involving probability distributions like Binomial and Poisson. The difficulties arise from conceptual misunderstandings, the complexity of probability tasks, and the inappropriate use of generalized problem-solving techniques. To address these issues, we recommend conducting protocol analysis to understand students' cognitive processes when solving probability problems. This approach could guide teachers in developing instructional strategies that enhance students' comprehension and application of probability concepts. The findings contribute to shaping educational policies and teaching practices that can improve mathematical literacy and performance in probability tasks.
Development of an Islamic context-based module to improve mathematical problem-solving ability Naela, Isna Ilviatun; Kumala, Fitria Zana
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 2 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i2.17735

Abstract

Mathematical problem-solving abilities are a crucial part of the mathematics curriculum, necessary for solving real-life problems. The mathematical problem-solving abilities of students at Bustanul Ulum Paguyangan Middle School remain low, as the learning approach is conventional and the teaching materials are limited to textbooks. This research aims to develop an Islamic context-based module on circular material that is both valid and effective in improving the mathematical problem-solving abilities of class VIII students at Bustanul Ulum Paguyangan Middle School. The type of research is Research and Development (R&D). The results indicate that the Islamic context-based module is valid according to the material expert validation and Islamic context, which received a score of 85.41%, media expert validation at 80%, mathematics teacher trials at 81.67%, small group trials at 83.28%, and field trials at 81.71%. Furthermore, the module was found to be effective in improving students' mathematical problem-solving abilities, with an average N-Gain score for the experimental class of 0.80 (high category), better than the control class's average N-Gain score of 0.40 (medium category). Based on these results, a t-test for two independent samples resulted in a value of 0.00, which is smaller than the significance level of 0.05. Therefore,  is rejected and  is accepted, indicating that the Islamic context-based module is valid based on material and media expert tests, teacher trials, small group trials, and field trials, and is effective in improving the mathematical problem-solving abilities of class VIII students at Bustanul Ulum Paguyangan Middle School.
Development of Augmented Reality media in polyhedral space-building lessons to improve the mathematical reasoning ability Prayoga, Hanna Arsyinta; Pamungkas, Megita Dwi; Nurjanah, Arifta
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 3 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i3.17756

Abstract

Technology plays a crucial role in education, especially in supporting teachers with interactive media to enhance students' mathematical reasoning in polyhedral geometry. This study aims to improve students' mathematical reasoning by developing and utilizing valid, practical, and effective augmented reality (AR) media for polyhedral geometry. The research adopts the ADDIE development model. The validity test results of the developed media indicate a validity score of 81.79% for media and 78.33% for material, categorized as highly valid. The practicality analysis, based on student response questionnaires, yields a score of 79.08%, categorized as practical. The effectiveness analysis, based on pretest and posttest data analyzed using the Paired Sample T-test, reveals a significant value of 0.000, indicating a significant improvement in students' average scores. Furthermore, the N-Gain score of 0.64 falls into the moderate category, confirming the media's effectiveness in enhancing mathematical reasoning. In conclusion, the augmented reality learning media for polyhedral geometry is valid, practical, and effective in improving students' mathematical reasoning. Future research is encouraged to develop more innovative products to further enhance learning quality.
The effect of using the educational game Quizizz on student motivation and math learning in grade 8 Nikola, Dimas Ananda; Harini, Esti; Taufiq, Irham
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 3 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i3.17763

Abstract

The integration of technology in education has introduced innovative tools to enhance learning experiences, including the use of educational games. This study examines the impact of the educational game Quizizz on the motivation and mathematics performance of eighth-grade students. The research utilized a quasi-experimental design with a Non-Equivalent Control Group Design. The sample was selected using cluster random sampling, consisting of 25 students from class VIII B as the control group and 25 students from class VIII C as the experimental group. Data were collected through questionnaires and mathematics tests. The analysis employed an Independent Sample t-Test to evaluate the effect of Quizizz on student motivation and a Mann-Whitney test to assess its impact on mathematics learning outcomes. The results revealed a significant positive effect of Quizizz on motivation, with a p-value of 0.042 (p < 0.05). Similarly, Quizizz significantly improved mathematics learning outcomes, as indicated by the Mann-Whitney test (p = 0.047). These findings suggest that Quizizz is an effective interactive learning tool that enhances both student motivation and academic achievement in mathematics. Thus, incorporating Quizizz into classroom activities can be a strategic approach to fostering student engagement and improving learning outcomes in mathematics.
Influence of teams games tournament learning model based on Flippity media on junior high school students interests in mathematics learning Rizky, Sisty Annisa; Purnami, Agustina Sri; Harini, Esti
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 3 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i3.17764

Abstract

In the context of improving student engagement and interest in mathematics, innovative teaching methods are essential. This study aims to examine: (1) students' interest in learning mathematics using a conventional teaching model, (2) students' interest in learning mathematics using a Flippity-based Teams Games Tournament (TGT) model, and (3) the effect of the Flippity-based TGT model on students' interest in learning mathematics. The research employs an experimental design with a quasi-experimental approach using a nonequivalent control group design. The population consists of eighth-grade students at SMP Muhammadiyah 4 Yogyakarta, and cluster random sampling was used to select the sample. Data were collected through observation, questionnaires, and documentation. Data analysis was conducted using a t-test. The results indicated that students' interest in mathematics with the conventional model had an average score of 68.04, categorized as average, while the TGT-based Flippity model showed an average score of 72.72, categorized as good. The hypothesis test revealed a significant effect of the Flippity-based TGT model on students' interest in learning mathematics, with a p-value of 0.036 (p < 0.05). Based on these findings, it is recommended that mathematics teachers consider implementing the TGT model with Flippity media, as this combination positively impacts students' interest in mathematics learning.
Analysis of practice math problems on statistics material for 8th grade students Riski, Muhammad; Arliani, Elly; Fitriana, Silfi Nisa
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 3 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i3.17911

Abstract

To improve the quality of learning, learning evaluation has an important role. One of the learning evaluations that is often carried out is daily assessments to see the achievement of particular material. The aim of this research is to describe the quality of mathematics questions in statistics material for junior high school students. The method used in this research is quantitative descriptive research assisted by the AnBuSo program and R studio software. The data collection technique used documentation techniques, with data sources in the form of mathematics questions on statistics material. Question items analysis is applied to prove validity, estimate reliability, level of difficulty, discrimination, as well as analyzing the factors that cause the question items to be difficult and have poor discrimination. The respondents in this research were 200 students taken from three junior high schools in DIY. Meanwhile, qualitative data analysis is used to explain the difficulty index and discrimination of the test items. The results of this research show that the Aiken value is valid, and the reliability estimates are quite good. The results of analysis based on the CTT and IRT approaches obtained a good mean index of difficulty and discrimination. These findings imply that the validated and reliable question items can be used as a reference for developing higher-quality assessments to improve student learning outcomes.

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