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All Journal Lentera Pendidikan : Jurnal Ilmu Tarbiyah dan Keguruan Indonesian Journal of Educational Science (IJES) Equals : Jurnal Ilmiah Pendidikan Matematika PHI: Jurnal Pendidikan Matematika Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Alauddin Journal of Mathematics Education (AJME) Jurnal Dedikasi Jurnal Pendidikan Matematika Unpatti JagoMIPA: Jurnal Pendidikan Matematika dan IPA Kognitif: Jurnal Riset HOTS Pendidikan Matematika JES-MAT (Jurnal Edukasi dan Sains Matematika) Seminar Nasional Pengabdian Kepada Masyarakat Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences OMEGA: Jurnal Keilmuan Pendidikan Matematika Seminar Nasional Hasil Penelitian LP2M UNM Ininnawa: Jurnal Pengabdian Masyarakat ARRUS Jurnal Pengabdian Kepada Masyarakat Kreano, Jurnal Matematika Kreatif Inovatif Jurnal Hasil-Hasil Pengabdian dan Pemberdayaan Masyarakat (JHP2M) Jurnal Ilmiah Matematika (JIMAT) Issues in Mathematics Educations (IMED)
Usman Mulbar
Jurusan Matematika FMIPA UNM Makassar
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PENGEMBANGAN BAHAN AJAR GEOMETRI BERBASIS STEM UNTUK PEMBELAJARAN YANG EFEKTIF DI SMA Permatasari, Eka Yunita; Mulbar, Usman
PHI: Jurnal Pendidikan Matematika Vol 10, No 1 (2026): EDISI APRIL, 2026
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/phi.v10i1.629

Abstract

This study was motivated by students’ low conceptual understanding of mathematics, as indicated by the results of the Programme for International Student Assessment (PISA), as well as mathematics instruction that remains abstract and lacks context. Therefore, the development of instructional materials capable of linking mathematical concepts to real-world situations requires innovation. The objective of this study is to create STEM-based instructional materials that meet valid, practical, and effective standards by using the Realistic Mathematics Education (RME) approach for the topic of curved-edged three-dimensional shapes in Grade 10 MIPA at SMA in Bone. This study is a research and development (R&D) project using the ADDIE model, which includes the analysis, design, development, implementation, and evaluation stages. The research subjects consisted of subject matter experts, design experts, teachers, and 10th-grade students. An abstract is often presented separately from the article, so it must be able to stand-alone. Data collection techniques included interviews, questionnaires, and achievement tests. The data obtained were analyzed using descriptive statistical techniques to assess the validity, practicality, and effectiveness of the developed instructional materials. This study is expected to produce STEM-based instructional materials that can enhance students’ understanding of geometric concepts through contextual and meaningful learning that utilizes local culture as a learning resource. Therefore, the developed instructional materials can serve as an innovation.
ANALISIS KEBUTUHAN DAN DESAIN E-BOOK INTERAKTIF BERBASIS KONTEKSTUAL PADA MATERI BANGUN DATAR Idris, Rahmy; Mulbar, Usman
PHI: Jurnal Pendidikan Matematika Vol 10, No 1 (2026): EDISI APRIL, 2026
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/phi.v10i1.630

Abstract

The low level of students’ conceptual understanding in plane geometry is caused by learning practices that are still oriented toward memorizing formulas, thus requiring innovative learning media that can support meaningful understanding. This study aims to analyze the needs and design a contextual-based interactive e-book for plane geometry material for eighth-grade students in junior high school. This research employs a conceptual design approach using the Research and Development (R&D) method, limited to the stages of needs analysis and product design. Data were obtained through a literature review related to digital learning media, interactive e-books, and contextual approaches, and were analyzed using descriptive qualitative techniques. The results indicate that the interactive e-book is designed with a systematic structure, including concept maps, gradual material presentation, and the integration of interactive features such as animations, videos, and exercises. The contextual approach embedded in the e-book enables students to understand mathematical concepts through their connection to real-life situations. Therefore, the contextual-based interactive e-book contributes as a potential learning medium to improve students’ conceptual understanding and to support more active, interactive, and independent learning.
Analisis Kesalahan Mahasiswa dalam Menyusun Flowchart Metode Posisi Palsu Berdasarkan Teori Rittle-Johnson dan Alibali Khadijah; Mulbar, Usman
EQUALS: Jurnal Ilmiah Pendidikan Matematika Vol. 8 No. 2 (2025): Inovasi Pembelajaran Matematika Berbasis Teknologi, Kognitif, dan Etnomatematik
Publisher : Program Studi Pendidikan Matematika, FKIP Universitas Muslim Maros

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46918/equals.v8i2.3015

Abstract

Penelitian ini bertujuan mendeskripsikan kesalahan mahasiswa dalam menerapkan algoritma Metode Posisi Palsu menggunakan bahasa pemrograman PHP melalui pendekatan Computational Thinking–Error Analysis Framework (CT–EAF). Desain penelitian yang digunakan adalah deskriptif kualitatif dengan menganalisis tugas akhir mahasiswa yang terdiri atas dokumentasi algoritma dan kode yang dapat dieksekusi. Analisis meliputi reduksi data, klasifikasi kesalahan, serta interpretasi berdasarkan dimensi computational thinking dan kategori kesalahan matematika. Temuan penelitian menunjukkan bahwa mahasiswa mengalami berbagai kesulitan dalam menerjemahkan konsep matematika ke dalam struktur komputasi dan dalam mengevaluasi ketepatan hasil iterasi. Sebagian besar kesalahan terkait dengan tantangan dalam mengabstraksikan rumus matematika Metode Posisi Palsu ke dalam logika program, serta keterbatasan refleksi dan debugging terhadap hasil komputasi. Kesalahan dalam abstraksi terutama meliputi penggunaan operator yang tidak tepat, kesalahan tanda kurung, atau penerjemahan rumus Metode Posisi Palsu yang keliru, sementara kesalahan evaluasi berkaitan dengan pengabaian kriteria konvergensi numerik ∣f(c)∣ < ε atau |Δc| < ε. Integrasi CT–EAF memberikan perspektif yang komprehensif mengenai hubungan antara proses berpikir algoritmik mahasiswa dan jenis kesalahan konseptual serta prosedural yang mereka lakukan. Penelitian ini menegaskan pentingnya penguatan computational thinking dan literasi algoritmik dalam pembelajaran metode numerik. Pendekatan CT–EAF berfungsi sebagai kerangka yang efektif untuk memandu mahasiswa menghubungkan konsep matematika dengan logika komputasi, sehingga mendorong proses pembelajaran yang menekankan pemahaman konseptual dan penalaran algoritmik, bukan sekadar menghasilkan output komputasional.
Pengembangan Bahan Ajar Matematika Berbasis Pembelajaran Mendalam pada Siswa Kelas VII SMPN 3 Sibulue Aulia Firman; Mulbar, Usman
Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Vol. 9 No. 2 (2026): Volume 9 Nomor 1 Tahun 2026
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/proximal.v9i2.8452

Abstract

This study is motivated by the low level of students’ mathematical conceptual understanding, which is caused by learning that still focuses on memorization and procedural steps without deep conceptual meaning. This study aims to develop mathematics teaching materials based on deep learning for seventh-grade students at SMPN 3 Sibulue. This research uses a Research and Development (R&D) method with the ADDIE model, which consists of analysis, design, development, implementation, and evaluation stages. The research subjects were seventh-grade students of SMPN 3 Sibulue. Data collection techniques included observation, questionnaires, and learning outcome tests. The data were analyzed quantitatively and qualitatively to determine the validity, practicality, and effectiveness of the teaching materials. The expected result of this study is the development of deep learning-based mathematics teaching materials that meet the criteria of being valid, practical, and effective in supporting meaningful learning. Therefore, the developed teaching materials are expected to become an alternative in improving the quality of mathematics learning, especially in terms of students’ mathematical conceptual understanding.
Co-Authors Ahmad Talib Ahmad Zaki Ahmad Zaky, Ahmad Ahmad, Khawaritzmi Abdallah Alwi, Ahmad Amran Yahya Anugerah, Andi Surya Asmad, Nurha Fifah Assagaf, Said Fachry Aulia Firman Baso Intang Sappaile, Baso Intang Bernard Chinsa, Nurhusneini Fatwa, Indah Ainun Garaika Hamzah Upu Hindi, Alfiah Nurfadhilah AM Hisyam Ihsan Idris, Rahmy Ilham Minggi Jumalia, Jumalia Kaito, Nurlaila Khadijah Khadijah Khadijah Mar Athul Wazithah T. Muhammad Farhan Nasrullah Nasrullah Nur Ismiyati Permatasari, Eka Yunita Purwanto, Indra R. Rusli Rahmat Syam Rivaldi Rosidah Rosidah Rosidah Ruldy, Faradillah Sa'diyyah, Fadhilah Nur Sahid Sahid Sahid Selpiana, Selpiana Sri Wahyuni St. Zulaiha Nurhajarurahmah Syafruddin Side Syahrullah Asyari, Syahrullah Syukur, Nurfadilah Tangdilintin, Lidia Aprilia Usman, Muhammad Rizal Wahidah Sanusi Widya Putri Ramadhani Yatri, Alya Eka