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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 649 Documents
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Enhancing mathematical communication skills through cooperative learning model-based worksheets of talking stick type Kurniawati, Eka Fitri; Sudiana, Ria
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 11 No 3 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v11i3.15104

Abstract

This study addresses the deficiency in students' mathematical communication skills attributed to teaching materials that do not effectively contribute to their development. The unappealing presentation of teaching materials leads to student boredom during learning activities and the adoption of inappropriate learning models. Therefore, enhancing communication skills through worksheets (LKPD) based on the cooperative talking stick model is essential. This research is research and development (R&D) using the research design of the development model of Borg and Gall (1983) with ten stages. However, in this study, only nine stages are considered, including 1) potential and problems, 2) data collection, 3) product design, 4) product validation, 5) product revision, 6) initial trials, 7) revisions, 8) usage trials, 9) Final revision, because this model has high validation that has been tested by several experts and produces an effective product. The research subjects comprised 35 ninth-grade students for the small-scale trials and 70 eighth-grade students for the large-scale trials. Data collection techniques in the form of questionnaires, tests, and documentation. The results of the feasibility test conducted by material experts, considering content, presentation, and language feasibility, yielded a score of 83.5%, and the results of media experts with aspects of model size, cover design, content design, component suitability obtained a value of 86.8% so that very feasible criteria were obtained. Based on teacher responses, the practicality test results yielded a score of 86.67%, and the results of the student's response obtained a value of 82.55%, so the response obtained very practical criteria. The effectiveness test results, employing N-Gain to measure student improvement after using the developed products to enhance mathematical communication skills, yielded 61.14%, indicating moderate effectiveness. Based on this, the products developed meet the criteria of feasibility, practicality, and effectiveness in the learning process.
effectiveness of the RADEC learning model on the numerical ability of madrasah tsanawiyah students Oktavia, Nadia; Pamungkas, Aan Subhan
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 11 No 3 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v11i3.15132

Abstract

Numeracy skills are essential for junior high school students in the 21st century. The RADEC (Read, Answer, Discuss, Explain, Create) model is appropriate for implementation. This research aims to examine the effectiveness of the RADEC learning model in improving the numeracy skills of junior high school students. The research utilizes a quasi-experimental method with a nonequivalent control group design. The subjects of this research are male and female students in Madrasah Tsanawiyah Negeri (MTsN) 1 Pandeglang, with the population consisting of all seventh-grade students in MTsN 1 Pandeglang during the even semester of the academic year 2022/2023. The sample includes two classes determined purposively, with class VII A as the control group and class VII E as the experimental group. The instrument used in this research is a numeracy skills test. The research findings indicate that the improvement in numeracy skills of students using the RADEC model is considered better than that of students using the problem-based learning model. In conclusion, the RADEC learning model is more effective in enhancing students' numeracy skills than the problem-based learning model.
Ethnomathematical exploration of Yogya Kembali Monument (Monjali) Nurwati, Mika Tanti; Suparni, Suparni
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 11 No 3 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v11i3.15233

Abstract

Yogya Kembali Monument is one of the tourist attractions in which there are relics of the struggle for Indonesian independence in reclaiming the Special Region of Yogyakarta. In terms of form, if analyzed in depth, there is a connection with mathematical concepts. This study aims to explore mathematical concepts (ethnomathematics) in the Yogya Kembali Monument. The type of research used in this study is exploratory research with an ethnographic approach. Data collection techniques are done through observation, documentation, and literature studies. This study aims to explore the collection of objects contained in the Yogya Kembali Monument, which can then be used as a source of learning media in teaching mathematical concepts to students. This research resulted in the discovery of mathematical concepts in the Yogya Kembali Monument, generally in the form of Build Flat and Build Space. These results can be implemented into mathematics learning and an effort to increase the love of local culture through ethnomathematics-based learning.
Development of flipped classroom math learning instruments with advocacy-sociograph Wijayanto, Zainnur; Rukmana, Indah Ayu; Kusumaningrum, Betty; Poort, Elang Amadeus
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 11 No 3 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v11i3.15272

Abstract

The research project described aims to create a Math learning media with a flipped classroom model on "Polyhedron of Cube and Block" for grade VIII Junior High School students. This device uses the advocacy-sociograph approach. This research uses three stages of development, namely Defining, Designing, and Developing. After conducting data analysis, it can be concluded that the results of the validation of the lesson plan are valid, indicating that it is well-designed and suitable for teaching the targeted mathematics content. Similarly, the e-LKPD (e-worksheet) also received very valid validation results, indicating that the e-LKPD is very suitable and adequate to facilitate student learning. These positive validation results indicate that the learning tools in lesson plans and LKPDs (worksheets) based on the flipped classroom approach with advocacy-sociographs are valid and feasible for further testing. The researchers recommend this learning tool as a reliable reference source for mathematics learning in Junior High School.
The impact of self-efficacy and math anxiety on the mathematical communication ability of 7-grade students Hanub, Aan Julia; Istiqomah, Istiqomah; Kusumaningrum, Betty; Poort, Elang Amadeus
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 11 No 3 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v11i3.15308

Abstract

The primary aim of this study is to assess the influence of self-efficacy and math anxiety on the proficiency of mathematical communication among Class VII students enrolled in State Junior High Schools within the Depok District. The research methodology is quantitative, employing an ex-post facto correlational descriptive approach. The study encompasses the entire population of Class VII students across all State Junior High Schools within the Depok District, with a sample size of 190 students selected through cluster random sampling. Data collection involves employing questionnaires to gauge students' self-efficacy and math anxiety levels, alongside descriptive tests to evaluate their aptitude in mathematical communication. Preceding the analysis, preliminary tests are conducted to assess linearity and multicollinearity. The data analysis procedure encompasses multiple regression analysis and t and F tests to ascertain both individual and collective impacts. The findings reveal the absence of a discernible impact from self-efficacy and math anxiety on the mathematical communication skills of Class VII students in State Junior High Schools in the Depok District. For subsequent researchers, it is recommended to carefully consider the construction of questionnaire statements to ensure their comprehensibility among students.
The relationship between self-regulated learning and student learning outcomes in applied mathematics courses Edistria, Ega; Nurjanah, Darul; Abdillah, Abdul Azis; Anggraini, Rimalia
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 11 No 3 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v11i3.15504

Abstract

This study aims to ascertain whether there is an interaction between self-regulating rules and student learning outcomes in applied mathematics courses. This study uses the product-moment correlation method from Karl Pearson. The research sample of 57 students was determined by convenience sampling. The data were obtained from questionnaires and midterm math scores. Data analysis methods use descriptive percentages, basic tests for linear regression, and SPSS version 16.0 for hypothesis testing. The findings of this research indicate that self-regulation has a solid and beneficial impact, correlated with the results of student learning in applied mathematics courses. The result of the calculation is the coefficient r xy = 0.721 > 0.005, with a determinant of 51.98%. The greater the degree of self-regulation, the more significant the learning outcomes obtained by students in applied mathematics courses.
Mathematical communication ability viewing of self-efficacy in project-based learning assisted by performance assessment Ziyaadaturrizka, Irta; Rochmad, Rochmad; Mariani, Scholastika
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 11 No 3 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v11i3.15680

Abstract

This research aims to achieve two primary objectives. Firstly, it seeks to assess the effectiveness of Project-Based Learning (PjBL) by incorporating performance assessment in enhancing students' mathematical communication abilities. Secondly, the study aims to characterize students' mathematical communication abilities to their self-efficacy levels. A mixed-methods approach was employed in this study, with a population comprising 251 seventh-grade students from SMP Negeri 24 Semarang. Data were gathered through mathematical communication skill tests, self-efficacy questionnaires, and interview guidelines. The experimental group underwent PjBL facilitated by performance assessment, while the control group experienced PjBL alone. Results indicated that the experimental group demonstrated classical mastery of mathematical communication abilities, with higher average and proportional achievements than the control group. PjBL assisted by performance assessment proved to be more effective than PjBL alone. Analysis of mathematical communication abilities based on students' self-efficacy levels revealed that (1) subjects with high self-efficacy fulfilled all indicators; (2) subjects with moderate self-efficacy fulfilled indicators one and two, were less proficient in fulfilling indicators four and were unable to fulfill indicator three; and (3) subjects with low self-efficacy fulfilled indicator one but had not yet achieved indicators two, three, and four.
Algebra essay questions: A validated instrument for evaluating the students' higher-order thinking skills Kania, Nia; Kyaruzi, Florence M.; Angraini, Lilis Marina
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 11 No 3 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v11i3.15688

Abstract

Indonesian pupils need help solving problems, particularly in mathematics, due to the need for practice questions with the higher-order thinking (HOT) type. This research aims to develop a reliable and valid tool for assessing students' higher-order thinking skills in mathematics. Developing a test involves gathering requirements, creating questions, assessing answers, running trials, analyzing data, making adjustments, and finally putting everything together. The instrument trial was conducted at SMAN at Majalengka, West Java. The total number of test subjects was 32 students. Research data were collected using a description test. The test instrument consists of 10 descriptions, but only 6 had good validity based on the value of V on the V-Aiken. In addition, the test package produces reliable questions based on Cronbach's Alpha scores. The test results of the instrument showed that the HOTS of mathematics for Grade X students was good. This step provides an overview to teachers in designing valid and relevant instruments.
The effect of using the Quizizz application in mathematics learning on student learning outcomes Maulana, Muhamad Rifqi; Pahmi, Samsul; Nurulaeni, Fitria; Sauce, Jeanne
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 11 No 3 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v11i3.15689

Abstract

This research is motivated by the need for more media use in mathematics learning. One of the impacts of the lack of media on learning mathematics is learning outcomes that could be more optimal. The media that can be used is technology, namely learning media based on the Quizziz application. The population of this study was students of SDN Dewi Sartika CBM, with the sample used being class 5 A of 35 people. Sampling using a purposive sampling technique. This study aims to determine how using the Quizziz application in learning mathematics affects student learning outcomes. The data collection techniques used were interviews, tests, and questionnaires. The data analysis tests carried out in this study were the Validity Test, Reliability Test, Normality Test, T-test, and N-Gain Test. The results of the data analysis showed that the data values were normally distributed with an average Pre-Test score of 31.74 in the less category and an average Post-Test score of 66.37 in the less category. The results of the analysis of data testing through SPSS can be seen in the Coefficients value obtained by sig. 0.000. It turns out that the value of sig. 0.000 < 0.05. It means that H0 is rejected. This shows that using the Quizizz application in learning mathematics affects student learning outcomes at SDN Dewi Sartika CBM, Sukabumi City. The N-Gain test results show that the mean value is 50.30% in the less effective category.
Students' mathematical representation ability in solving contextual problems on circle material Saputri, Distya Haerani; Izzati, Nur; Siregar, NurAsma Riani
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 11 No 3 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v11i3.15697

Abstract

This study aimed to describe students' mathematical representation ability in solving contextual problems on circle material. The approach used is a qualitative approach with a descriptive research type. The research subjects came from class VIII B SMP Negeri 15 Tanjungpinang and were selected from as many as eight students. Data collection was done through test techniques and semi-structured interviews. The research findings show that students have different mathematical representation abilities. Students with very high mathematical representation ability categories can master three mathematical representation indicators (visual, mathematical equations or expressions, and written words or text). Students with high categories are only able to master two indicators (visual and mathematical equations or expressions), students with medium categories are only able to master one indicator (visual or mathematical expressions), and students with fewer categories are not able to master all three mathematical representation indicators. The tendency of students to master the indicators of mathematical equations or expressions well is due to being able to use mathematical connection skills well.

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