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All Journal AdMathEdu : Jurnal Ilmiah Pendidikan Matematika, Ilmu Matematika dan Matematika Terapan AlphaMath: Journal of Mathematics Education Phenomenon : Jurnal Pendidikan MIPA KALAMATIKA Jurnal Pendidikan Matematika Union: Jurnal Ilmiah Pendidikan Matematika SJME (Supremum Journal of Mathematics Education) Prima: Jurnal Pendidikan Matematika FIBONACCI: Jurnal Pendidikan Matematika dan Matematika Jurnal Saintika Unpam : Jurnal Sains dan Matematika Unpam J-PiMat : Jurnal Pendidikan Matematika Indonesian journal of teaching and learning Journal of Community Service (JCOS) SIGMA DIDAKTIKA: Jurnal Pendidikan Matematika International Journal of Applied Learning and Research in Algebra
Ratu Sarah Fauziah Iskandar
Universitas Muhammadiyah Tangerang
Religion Humanities Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Mathematics Physics Public Health Social Sciences Other

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Analisis Representasi Visual Siswa Dalam Pembelajaran Matematika Berbasis Etnomatematika Digital Karlina Handayani; Ratu Sarah Fauziah Iskandar; Ahmad Fadillah
J-PiMat : Jurnal Pendidikan Matematika Vol 8, No 1 (2026): J-PiMat
Publisher : Prodi Pendidikan Matematika STKIP Persada Khatu;istiwa Sintang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31932/j-pimat.v8i1.6430

Abstract

This study addresses the issue of students’ low ability in constructing meaningful mathematical visual representations, which are often limited to reproductive forms. To overcome this, ethnomathematics is utilized as an approach to relate mathematical concepts with local cultural contexts, making learning more contextual and meaningful. The purpose of this research is to explore how students construct mathematical visual representations through ethnomathematics-based learning supported by digital media. This study employs a descriptive qualitative approach involving tenth-grade students at MAN 2 Kota Tangerang selected purposively. Data were collected through classroom observations, documentation of students’ work, and interviews, and analyzed through data reduction, data display, and conclusion drawing. The findings reveal that ethnomathematics facilitates students in recognizing patterns and transforming cultural visuals into mathematical representations. However, students demonstrate varying levels of ability, ranging from reproductive, transitional, to conceptual stages. While ethnomathematics shows strong potential in improving students’ visual representation skills, appropriate scaffolding is still required to support deeper conceptual understanding. These results highlight the importance of integrating ethnomathematics into mathematics learning to foster more meaningful and contextual comprehension.Keyword: visual mathematical representation; digital ethnomathematics
The effect of realistic mathematics education (RME) on the improvement of students’ spatial ability in solid geometry Indah Ameliya Fitriani; Warsito Warsito; Ratu Sarah Fauziah Iskandar; Iden Rainal Ihsan
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 14 No 1 (2026)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v14i1.22158

Abstract

This study aims to examine the effect of the Realistic Mathematics Education (RME) approach on students’ spatial ability in learning solid geometry and to identify the improvement in students’ spatial ability after its implementation. RME needs empirical evidence on how contextual tools and digital integration sustain long-term spatial ability. The research employed a mixed-methods approach with a Sequential Explanatory design, consisting of two stages: quantitative and qualitative. The population included all seventh-grade students totaling 98 students, while the sample comprised 65 students divided into an experimental class (33 students) and a control class (32 students). Data were collected using tests and interviews. The test instrument consisted of 10 essay questions that were valid and reliable. The independent samples t-test showed a significant difference (p = 0.022), and the N-Gain score (0.68) indicated a moderate improvement, with significance values of 0.058 for the experimental class and 0.200 for the control class, and were homogeneous with a significance value of 0.929. Qualitative findings from interviews indicated an improvement in students’ spatial ability in solid geometry. Overall, the results demonstrate that the RME approach has a positive effect and contributes to the improvement of students’ spatial ability. The findings confirm that the RME approach significantly enhances students’ spatial ability in solid geometry, demonstrating both statistically significant differences and meaningful learning gains compared to conventional instruction. This study contributes empirical evidence on the effectiveness of integrating contextual and representational learning within RME to systematically develop students’ spatial ability in geometry learning contexts.
Enhancing Students' Mathematical Interpretation Ability through Project-Based Learning in Statistics: Evidence from a Quasi-Experimental Study Syauqi Fari Hapittullah; Ratu Sarah Fauziah Iskandar; Rika Sukmawati; Muhammad Hafeez
Indonesian Journal of Teaching and Learning (INTEL) Vol. 5 No. 3 (2026)
Publisher : Edupedia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56855/intel.v5i3.2366

Abstract

Purpose – Mathematical interpretation ability is a key component of mathematical literacy, enabling students to interpret mathematical representations and solve contextual problems. However, many junior secondary students struggle to interpret statistical information presented in pie charts. This study examined the effectiveness of Project-Based Learning (PjBL) in improving students' mathematical interpretation ability in statistics. Methodology – A quasi-experimental study using a non-equivalent control group design was conducted with 42 Grade VII students from MTs Al-Layyinah, Indonesia. The participants were assigned to an experimental group (n = 21) and a control group (n = 21). Data were collected using a six-item essay test and analysed through descriptive statistics, the Shapiro–Wilk test, Levene's test, and an Independent Samples t-test. Findings – Students in the experimental group outperformed those in the control group (74.05 vs. 64.05). The difference was statistically significant (t = 3.044, p = 0.004), indicating that PjBL effectively improved students' mathematical interpretation ability. Novelty – This study provides empirical evidence that authentic project activities integrating data collection, pie-chart construction, and contextual interpretation effectively develop mathematical interpretation ability in statistics. Significance – The findings support the integration of PjBL into mathematics instruction to strengthen students' mathematical interpretation ability and statistical literacy.
Development of Mathematics Teaching Materials on Statistics with A Problem-Solving Approach Indah Indar Wulan; Warsito Warsito; Ratu Sarah Fauziah Iskandar
Indonesian Journal of Teaching and Learning (INTEL) Vol. 4 No. 2 (2025)
Publisher : Edupedia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56855/intel.v4i2.1493

Abstract

This study aims to develop mathematics teaching materials on statistics material that is practical, effective, and valid, and suitable as a student learning module. The type of research used is Research and Development (R&D), which involves developing teaching materials in the form of modules on the subject of statistics. The model used in this teaching material research is the 4-D development model (four D models). This research model has four stages of research, namely 4-D development (four D Models), including define, design, develop, and disseminate. Based on this study, it was found that the Module with a problem-solving approach to statistics material developed by researchers with the 4D model modified into 3D was declared valid by material experts, and media experts with Very Good criteria, and based on the assessment of education experts, namely teachers and students. A module with a problem-solving approach to statistics material, developed by researchers, was declared practical. This means that the Module developed by researchers makes it easier for students to learn and can increase students' interest and motivation in learning mathematics, especially statistics material. This study aims to develop mathematics teaching materials on statistics material that is practical, effective, and valid, and suitable as a student learning module. The type of research used is Research and Development (R&D), which involves developing teaching materials in the form of modules on the subject of statistics. The model used in this teaching material research is the 4-D development model (four D models). This research model has four stages of research, namely 4-D development (four D Models), including define, design, develop, and disseminate. Based on this study, it was found that the Module with a problem-solving approach to statistics material developed by researchers with the 4D model modified into 3D was declared valid by material experts, and media experts with Very Good criteria, and based on the assessment of education experts, namely teachers and students. A module with a problem-solving approach to statistics material, developed by researchers, was declared practical. This means that the Module developed by researchers makes it easier for students to learn and can increase students' interest and motivation in learning mathematics, especially statistics material.
Wordwall-Supported Mathematics Instruction and Junior High School Students’ Mathematical Creative Thinking: A Quasi-Experimental Stud Virna Jatnika Sary; Ratu Sarah Fauziah Iskandar; Abdul Baist; Muhammad Azam
International Journal of Applied Learning and Research in Algebra Vol. 3 No. 2 (2026)
Publisher : EDUPEDIA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56855/algebra.v3i2.2455

Abstract

Purpose – This study examines the effect of Wordwall-supported mathematics instruction on junior high school students’ mathematical creative thinking, with particular attention to fluency, flexibility, originality, and elaboration. It addresses the limited empirical evidence on how digital game-based learning supports domain-specific mathematical creativity in secondary education. Methodology – A quasi-experimental pretest–posttest nonequivalent control-group design involved 60 Grade 8 students in Tangerang, Indonesia. Thirty students received Wordwall-supported instruction and 30 received regular instruction. Mathematical creative thinking was measured using five open-ended tasks. Posttest scores were analysed using ANCOVA with pretest scores as a covariate, while normalised gain was used as a supplementary measure of improvement. Findings – After controlling for baseline performance, the experimental group achieved a higher adjusted posttest mean (86.73) than the control group (80.60), with an adjusted mean difference of 6.13 points, 95% CI [2.51, 9.74], F(1, 57) = 11.52, p = .001, partial η² = .168. The experimental group also showed a higher normalised gain (0.659 vs. 0.502), p = .002, with Hedges’ g = 0.85. Novelty – The study provides domain-specific evidence that Wordwall can support mathematical creativity when digital tasks are deliberately designed to elicit multiple solutions, strategic flexibility, original responses, and elaborated reasoning. Significance – The findings extend international research on digital game-based mathematics learning by showing how a widely accessible platform can support creative mathematical thinking in a lower-secondary context, offering a transferable instructional principle for technology-enhanced mathematics classrooms across diverse educational settings.
Penguatan Literasi Numerasi melalui Pembelajaran Kontekstual Berorientasi TKA bagi Siswa SD Rika Sukmawati; Ratu Sarah Fauziah Iskandar
Journal of Community Service (JCOS) Vol. 4 No. 3 (2026)
Publisher : EDUPEDIA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56855/jcos.v4i3.2439

Abstract

Kegiatan Pengabdian kepada Masyarakat (PKM) ini dilaksanakan untuk meningkatkan kemampuan literasi numerasi siswa dalam menghadapi tuntutan asesmen pendidikan, khususnya Tes Kemampuan Akademik (TKA). Rendahnya kemampuan siswa dalam memahami soal berbasis konteks dan penalaran menjadi dasar penerapan pendekatan pembelajaran kontekstual yang mengaitkan konsep numerasi dengan situasi nyata dalam kehidupan sehari-hari. Kegiatan ini bertujuan meningkatkan pemahaman konsep numerasi, kemampuan menyelesaikan soal berbasis penalaran, serta kesiapan siswa menghadapi soal bertipe TKA. Pelaksanaan kegiatan meliputi analisis kebutuhan, penyampaian materi numerasi kontekstual, demonstrasi penyelesaian soal, latihan terbimbing, praktik mandiri, pendampingan, dan evaluasi. Peserta kegiatan adalah siswa SDN Suka Asih 1. Hasil kegiatan menunjukkan peningkatan kemampuan siswa dalam memahami konsep dasar numerasi dan menerapkan strategi penyelesaian soal yang berorientasi pada pola TKA. Siswa juga menunjukkan peningkatan antusiasme, motivasi belajar, dan kepercayaan diri dalam menyelesaikan soal berbasis penalaran. Kegiatan ini menunjukkan bahwa pendekatan kontekstual dapat mendukung penguatan literasi numerasi siswa sekolah dasar sekaligus meningkatkan kesiapan mereka menghadapi asesmen akademik. Selain berdampak pada siswa, kegiatan ini juga memperkuat kemitraan antara perguruan tinggi dan sekolah dalam pengembangan pembelajaran matematika dan numerasi.
Co-Authors Abdul Baist Dadang Juandi Dewi Ranti Dina Maulida Duwi Hastuti Fadillah, Ahmad Haerudin Haerudin Iden Rainal Ihsan Iden Rainal Ihsan Inayah, Sarah Indah Ameliya Fitriani Indah Indar Wulan Karlina Handayani Muhammad Azam Muhammad Hafeez Muhammad Yakob Nanang Priatna Raditya, Aji Rania Darus Suciati Rizki Amalia Roni Priyanda Sari Herlina Siti Kurniati Sukmawati, Rika Suwarno Suwarno Suwarno Suwarno Syauqi Fari Hapittullah Tia Nur Tartilah Trisna Roy Pradipta Veni Saputri Virna Jatnika Sary Warsito Warsito