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Firmansyah, Frenza Fairuz
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Religion Biochemistry, Genetics & Molecular Biology Chemistry Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Physics Social Sciences Other

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Integrasi Luas Permukaan Bangun Ruang dan Design Thinking dalam Proyek Paving Block Ramah Lingkungan Rohma, Hanifah Nur; Susanto, Susanto; Firmansyah, Frenza Fairuz
Griya Journal of Mathematics Education and Application Vol. 5 No. 3 (2025): September 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i3.670

Abstract

As part of the community environment, the school faces challenges in managing the growing amount of plastic waste. Through a project of making paving blocks from plastic waste, this study aims to help students learn geometry by integrating the concept of surface area of 3D shapes into real-life practice. Students took part in the project by designing and creating hexagonal prism-shaped paving blocks to cover the archery extracurricular area, which often gets muddy during rainy days. This study was conducted using a descriptive qualitative approach. Interviews with students and teachers, project process documentation, and observation of learning activities were all methods used to collect data. The results show that the Design Thinking approach supported students in understanding surface area in a more practical way, especially in calculating the dimensions and quantity of paving blocks needed. The project also encouraged students to be more aware of environmental issues.
Analisis Literasi Matematis Siswa Sekolah Satu Atap dalam Menyelesaikan Soal Transformasi Geometri Hasanah, Nur Wahidatul; Susanto, Susanto; Suwito, Abi; Firmansyah, Frenza Fairuz
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.928

Abstract

Penelitian ini bertujuan untuk menganalisis kemampuan literasi matematis siswa Sekolah Satu Atap dalam menyelesaikan soal transformasi geometri, khususnya pada materi pencerminan. Metode penelitian yang digunakan adalah deskriptif kualitatif dengan subjek siswa kelas IX SMP Negeri 3 Satu Atap Tamanan tahun ajaran 2025/2026. Data dikumpulkan melalui tes kemampuan literasi matematis yang mengukur tiga aspek utama, yaitu formulate, employ, dan interpret. Hasil penelitian menunjukkan bahwa siswa hanya memahami konsep pencerminan secara visual dan intuitif tanpa mampu menerapkannya secara matematis. Total skor yang diperoleh siswa adalah 3 dari skor maksimum 8 dengan nilai kemampuan literasi matematis sebesar 37,5, sehingga tergolong kategori rendah. Kesalahan yang muncul mencakup ketidaktepatan dalam menentukan koordinat bayangan, kurangnya penerapan prosedur matematis, serta ketidakmampuan menginterpretasikan hasil dalam konteks simetri batik. Temuan ini menegaskan perlunya pembelajaran geometri yang lebih kontekstual dan berbasis literasi matematis agar siswa mampu mengaitkan konsep matematika dengan fenomena kehidupan nyata.
Gagal Mengikat Tinggi-Heron-Relasi Sisi : Analisis Miskonsepsi Mahasiswa pada Segitiga Lutfiyah, Lutfiyah; Susanto, Susanto; Suwito, Abi; Firmansyah, Frenza Fairuz
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v6i1.906

Abstract

This study aims to identify and describe in depth the emergence of conceptual misconceptions and procedural errors, as well as the dynamics of students' thinking processes when solving triangle geometry problems. The research used a descriptive qualitative approach with a case study design on three mathematics education students who had taken basic geometry, selected purposively to represent a variety of academic abilities and allow for intensive exploration of thought processes. The instrument is a triangular geometry problem solving task that looks for height, area, and lateral relations. Data was collected through written answer sheets, video recordings of the work, and retrospective clarification interviews, then analyzed qualitatively to trace patterns of misconceptions and procedural errors in the problem-solving flow. Data validity through source triangulation and trail auditing. The results showed that the three students displayed a neat calculation procedure, but were conceptually fragile. The height of a triangle is not interpreted as a perpendicular relation, the use of the theorem is carried out without prerequisites, and the relations between the lateral segments are assumed intuitively. Weak monitoring and evaluation during the problem-solving process hinders the formation of a coherent conceptual framework. These findings confirm the need for geometry learning that emphasizes the status of mathematical objects, adherence to the prerequisites of concepts and theorems, and the development of reflective monitoring habits in problem solving.
MENU SEHAT, ANGKA TEPAT: PEMBERDAYAAN IBU DAN ANAK DI DESA SERUT, JEMBER Yudianto, Erfan; Firmansyah, Frenza Fairuz; Sulihah, Nurfaizah Titisari; Febriyanto, Eko Yudi; Sari, Vadira Rahma
As-Sidanah Vol 8 No 1 (2026): APRIL
Publisher : LP2M Universitas Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35316/assidanah.v8i1.1-19

Abstract

Low nutritional literacy and health numeracy in rural families have the potential to impact the quality of food choices and daily cooking practices. Exploratory interviews conducted in March 2025 with mothers participating in the Community-Based Nutritional Research Center (TBM) in Serut Village revealed limitations in understanding nutritional composition, serving sizes, and budget-based menu planning. This situation prompted the need for interventions to improve mothers' nutritional knowledge, attitudes, and practices (KAP) and to strengthen children's health numeracy. The “Healthy Menu, Right Numbers” community program was implemented through six meetings using a community-based participatory approach (CBPA) for two target groups: mothers (n=10) and preschool–elementary school children (n=50). The materials covered balanced nutrition, label literacy, menu preparation using local ingredients, and contextual numeracy (portion calculation, serving sizes, budget), with CALGIBRA as a simple calculation tool. The evaluation used a descriptive pre-post design without inferential testing. In the mother group (n=10), the mean score increased from 29.0±2.05 to 29.4±2.63 (Δ=+0.4; maximum 32), with 6 mothers improving and 4 decreasing slightly. In the child group (7 groups), three groups improved, three remained stable, and one decreased. The findings are descriptive and contextual, showing mild but consistent improvements in mothers and strengthening of contextual numeracy in children. Sustainability focuses on monthly monitoring and micro-coaching based on kitchen cases, with CALGIBRA as an innovation that supports independent numeracy practice.
How geometry task management shapes students’ spatial structuring: Evidence from tangram-based pythagorean problem solving Yudianto, Erfan; Firmansyah, Frenza Fairuz; Zulnaidi, Hutkemri
Al-Jabar: Jurnal Pendidikan Matematika Vol 17 No 2 (2026): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ajpm.v17i2.30955

Abstract

Purpose: This study examines how geometry task management shapes students’ spatial structuring when solving Pythagorean Theorem problems through tangram-based tasks. Method: This study employed a qualitative case study design involving six eighth-grade students (aged 13–14) from a public junior high school. The participants were purposively selected to represent diverse levels of classroom participation. Data were collected across three classroom sessions through students’ work artifacts, classroom interaction transcripts, and observation notes. Data were analyzed using a qualitative interpretative approach involving iterative coding and cross-case comparison to identify patterns of spatial structuring, particularly in relation to part–whole coordination, recognition of invariant properties, and reconfiguration strategies. Findings: The analysis indicates that geometry task management shapes students’ spatial structuring through geometric reconfiguration and increasing attention to part–whole relationships. Students’ reasoning evolves from visual manipulation toward more relational forms of understanding as tasks are sequenced and supported through teacher questioning; for example, some students initially relied on visual fitting strategies but later justified their rearrangements by referring to equal lengths and area equivalence after teacher prompts. The results indicate that spatial reasoning emerges through interaction with representations and is influenced by how instructional tasks direct students’ attention to invariant geometric relationships. Significance: This study contributes to mathematics education by showing how spatial structuring can be understood as a pedagogically supported process shaped through geometry task management. The findings highlight the importance of task sequencing and teacher guidance in supporting students’ spatial reasoning in learning the Pythagorean Theorem.
Co-Authors Abdurrahman Salim Abi Suwito Afifah, Ngizatul Ambarwati, Reza Angrenani, Arin Berliana Anizah, Arinatul Budianto, Trio Rhoma Dian Kurniati Didik Sugeng Pambudi Dwi Susanti Erfan Yudianto Fahmi, Moh. Abqoriyun Nabighul Fauzi, Amiratul Muhsinah Fazira, Shima Kunaza Febrianto, Eko Yudi Febriyanto, Eko Yudi Febriyanto, Eko Yudi Febriyanto Gantiyani, Hari Hasanah, Nur Wahidatul Hikam, Fashia Ikhlasul Jatmiko, Dhanar Dwi Hary Lutfiyah Lutfiyah Nayyiroh, Zulfi Rohma, Hanifah Nur Sari, Vadira Rahma sulihah, nurfaizah titisari SUSANTO Susanto Susanto Zulnaidi, Hutkemri