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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) Cakrawala Pendidikan Jurnal Kependidikan: Penelitian Inovasi Pembelajaran JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Penelitian dan Evaluasi Pendidikan Jurnal Pendidikan Matematika AKSIOMA Jurnal Pendidikan Matematika Journal on Mathematics Education (JME) Kreano, Jurnal Matematika Kreatif-Inovatif JSI: Jurnal Sistem Informasi (E-Journal) Journal on Mathematics Education (JME) Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Prosiding Universitas PGRI Palembang Jurnal Riset Pendidikan Matematika AKSIOMA: Jurnal Program Studi Pendidikan Matematika Annual Research Seminar Jurnal Elemen EDU-MAT: Jurnal Pendidikan Matematika Proceeding of the Electrical Engineering Computer Science and Informatics Jurnal Gantang Sriwijaya University Learning and Education International Conference Al-Jabar : Jurnal Pendidikan Matematika Math Didactic: Jurnal Pendidikan Matematika JRPM (Jurnal Review Pembelajaran Matematika) Jurnal SOLMA JTAM (Jurnal Teori dan Aplikasi Matematika) MATAPPA: Jurnal Pengabdian Kepada Masyarakat Indiktika : Jurnal Inovasi Pendidikan Matematika Jurnal Cendekia : Jurnal Pendidikan Matematika International Journal of Active Learning JPMI (Jurnal Pembelajaran Matematika Inovatif) Jurnal Anugerah: Jurnal Pengabdian Kepada Masyarakat Bidang Keguruan dan Ilmu Pendidikan Aksioma Mosharafa: Jurnal Pendidikan Matematika Journal of Instructional and Development Researches Kognitif: Jurnal Riset HOTS Pendidikan Matematika Edutainment : Jurnal Ilmu Pendidikan dan Kependidikan Amal Ilmiah: Jurnal Pengabdian Kepada Masyarakat Kreano, Jurnal Matematika Kreatif Inovatif Mathematics Education Journal Journal on Mathematics Education AKSIOMA SJME (Supremum Journal of Mathematics Education) Jurnal Didaktik Matematika
Darmawijoyo, Darmawijoyo
Universitas Sriwijaya
Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Social Sciences Other

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Students’ Procedural Fluency in Fraction Addition through Built-in Definition Fraction Media Siregar, Jelita Herdia; Darmawijoyo; Yukans, Septy Sari; Utari, Rahma Siska
SJME (Supremum Journal of Mathematics Education) Vol 10 No 1 (2026): Supremum Journal of Mahematics Education
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Singaperbangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35706/sjme.v10i1.13205

Abstract

This study aims to describe elementary students’ procedural fluency in solving fraction addition problems using the built-in definition fraction media. Fraction operations are often challenging for students, particularly when determining common denominators and applying calculation procedures accurately. These difficulties are commonly associated with weak procedural understanding and limited opportunities to use concrete learning media. This descriptive study involved 30 fourth-grade students from SDN 204 Palembang who had previously learned basic fraction concepts. Data were collected through a written test consisting of three levels of procedural fluency tasks and supported by interviews to explore students’ reasoning processes. The results show that 47% of students were able to solve fraction addition problems with denominators (Level 1), 33% managed tasks involving adjustment of one denominator (Level 2), and only 13% successfully solved problems requiring the determination of the least common multiple of denominators (Level 3). These findings indicate that students’ procedural fluency development is not linear but constrained at transition points from concrete visual manipulation to abstract procedural reasoning. While the built-in definition fraction media effectively supported early procedural stages by strengthening visual–procedural connections, it was less effective in facilitating higher-level abstraction required for complex fraction operations. The study contributes to procedural fluency literature by identifying specific procedural transition points where students begin to experience difficulties.
Local Instruction Theory: Supporting Derivative Concept Learning Through Climate Change Context Kurniadi, Elika; Zulkardi, Zulkardi; Putri, Ratu Ilma Indra; Darmawijoyo, Darmawijoyo
Mathematics Education Journal Vol. 20 No. 1 (2026): Mathematics Education Journal
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/mej.v20i1.pp27-50

Abstract

This research aims to develop a Local Instructional Theory (LIT) for teaching the concept of derivatives through internalization using the real-life context of climate change. It employed a three-phase design strategy: (1) the development of a Hypothetical Learning Trajectory (HLT); (2) teaching experiments conducted with 5 students in pilot experiments and 37 Grade 11 students in final experiment; and (3) a retrospective analysis. Data was collected through observations of classroom interactions, student worksheets, tests, interviews, and field notes. The retrospective analysis involved comparing the actual learning processes to the HLT. The results indicate that students' perceptions of the derivative developed through three fundamental activities: (1) amount of change and instantaneous rate; (2) rates of change, where the derivative was introduced as a tool for understanding instantaneous changes; and (3) prediction, in which students used derivatives to forecast future climatic patterns. These exercises helped students to conceptually understand the derivative as a measure of instantaneous rate of change, while also promoting mathematical modeling and environmental awareness. The resulting LIT offers a pragmatically based approach to conveying the concept of calculus in contextualized and provides practical implications for the construction of curricula and the teaching of mathematics at the secondary school level.
Developing a built-in definition of fraction manipulative to enhance students’ conceptual understanding Darmawijoyo; Yukans, Septy Sari; Kurniadi, Elika; Pratiwi, Weni Dwi
Jurnal Elemen Vol 12 No 1 (2026): January
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v12i1.33341

Abstract

This study addresses the challenge of students limited conceptual understanding of fractions by developing a physical manipulative called the Built-in Definition of Fraction (BDF). Using design research developmental studies, data were collected through written tests, questionnaires, and interviews. A total of 41 fifth-grade students participated in the study. The BDF and its accompanying student worksheet integrate dual visual-symbolic representations, that link each concrete action to its corresponding fraction notation and scaffold students in constructing their own understanding of fractions, offering a new approach to using fraction manipulatives. Validation results show that the manipulative is valid, practical, and effective in supporting student understanding of basic fraction concepts, equivalent fractions, and same-denominator addition, even with minimal teacher guidance. Student performance was high across visual-concrete tasks. However, a noticeable gap emerged in unlike-denominator addition between visual concrete performance (88%) and formal-symbolic procedures (77%). This finding highlights the need for additional scaffolding to help students transition more smoothly from concrete representations to abstract symbolic reasoning.
Penguatan Profesionalisme Guru Matematika SMP Melalui Pelatihan Penyusunan Soal Pemodelan Matematika Hartono, Yusuf; Darmawijoyo, Darmawijoyo; Yukans, Septy Sari; Ridho, Muhammad; Pratiwi, Weni Dwi
Jurnal SOLMA Vol. 15 No. 1 (2026)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/solma.v15i1.21849

Abstract

Pendahuluan: Pembelajaran matematika masih didominasi oleh soal-soal yang bersifat prosedural, sementara kemampuan siswa dalam memecahkan masalah kontekstual dan membangun model matematika masih rendah. Studi ini bertujuan untuk meningkatkan kompetensi profesionalisme guru matematika SMP dalam menyusun soal pemodelan matematika. Metode: Analisis kebutuhan, pelatihan, dan pendampingan dalam menyusun soal pemodelan matematika yang dilakukan secara luring dan daring. Hasil: Adanya peningkatan pemahaman konsep pemodelan matematika sebesar 93,3% dan 11  peningkatan dalam menyusun soal pemodelan matematika sebesar 73,3%. Kesimpulan: Pelatihan ini efektif dalam meningkatkan pemahaman konseptual guru akan pemodelan matematika dan keterampilan guru dalam merancang soal pemodelan matematika.
Co-Authors Abdul Harris ADI SAPUTRO Ahmad Fali Oklilas Ahmad Heryanto Aisyah Turidho Albertus Edward Mintaria Amarta, Nadiati Andi Harpeni Dewantara Andi Harpeni Dewantara, Andi Harpeni Anggria Septiani Mulbasari Anggria Septiani Mulbasari, Anggria Septiani ANISAH Anisah Anisah Apriana Sari Ruslan Ardiansyah, Hijir Azka, Dea Alvionita Azma, Tiara Rodiana B Santoso Bambang Riyanto Bambang Riyanto Bedine Kerim Bedine Kerim Billy Suandito C Hiltrimartin Cecil Hiltrimartin Charmila, Ninik Deris Stiawan Desi Permata Sari Devi Emilya Dhany Fachrudin, Achmad Dian Novita Dina Octaria Dinal Ulya Sukiman Dwi Budi Santoso Dwi Febianti Dyah Rahmawati EDWAR Eka Fitri Puspa Sari, Eka Fitri Puspa Eko Arip Winanto Ely Susanti Evy Yosita Silva Febi Renico Selvia Firsta, Risa Rahmatia Fitri Maya Puspita Frans van Galen Frans van Galen Hadi Purnawan Satria Hapizah Hardiyanti Indriani Harris, Abdul Hartatiana Hartatiana Hazlita Hazlita, Hazlita Hendra Pratama Idris, Mohd. Yazid Idris, Mohd. Yazid Indah Nur Hijriyah Indaryanti Indaryanti Irkham Ulil Albab Jaap den Hertog Jonny Simanullang Julaiha, Ellah Kairuddin . Kamaliyah Kamaliyah Khairun Nisak Kiki Rizkiah Pertiwi Kiki Rizkiah Pertiwi, Kiki Rizkiah Kurniabudi, Kurniabudi Kurniadi, Elika Leni Maimuna Leonardo Jonathan Shinariko Lestaria N, Yunika Lestariningsih Lestariningsih Lestariningsih Lestariningsih Lintang Fitra Utami Maimuna, Leni Maria Mareta Simalango marlina, eli Maya Saftari Meryansumayeka Meryansumayeka Mintaria, Albertus Edward Mira Nurhayati Mohd Yazid bin Idris Mohd Yazid Bin Idris Mohd. Yazid Idris Mohd. Yazid Idris Mohd. Yazid Idris Muhammad Ridho Muhammad Win Afgani Muhammad Yusuf Muhammad Yusuf Mulyono, Budi N Herawati Nety Wahyu Saputri Nila Kesumawati Nila Kesumawati Novita Sari Novita Sari Novitasari, Ranny Nurrosyadah, Naqiyyah Nyimas Aisyah Nyimas Aisyah Permata, Endah Dwi Pratiwi, Weni Dwi Primanita, Anggina Puji Astuti Purnama, Benni Purwoko Purwoko Purwoko Purwoko Purwoko R Wulandari Rahma Siska Utari Rahmat Budiarto Rahmat Budiarto Ratu Ilma Ratu Ilma Ratu Ilma Indra Putri Renny Sendra Wahyuni Retni Paradesa Ridwan, Ruslan Risnina Wafiqoh Riya Apriyani Rosanti, Aprida Ruslan Ridwan Saleha, Atikarani Noer Saliza Safta Assiti Saliza Safta Assiti Samsuryadi Samsuryadi Saparudin Saparudin Saputri, Nety Wahyu Sari, Arika Sari, Septi Puspita Scristia, Scristia Selvi Marcellia Selvia, Febi Renico Selvia, Febi Renico Septi Triyani Septi Triyani Shahibul Ahyan Sharipuddin, Sharipuddin Shintia Revina Simalango, Maria Mareta Simanullang, Jonny Simarmata, Ruth Helen Siregar, Jelita Herdia Siti Lestari Siti Rohayah Siti Rohayah, Siti Somakim, Somakim Sri Desy Siswanti Sujinal Arifin Sukmaningtyas, Novika Susanti, Elsa Syamsuryadi Syamsuryadi Syutaridho Tri Wahyudi Utami, Marta Risa Putri Vebrian, Rajab Wijaya, Aldi Putra Winda Wulandari Wulandari, Trisna Yajid Latif Yukans, Septy Sari Yundari, Yundari Yusliriadi Yusliriadi Yusliriadi, Yusliriadi Yusuf Hartono Zetra Hainul Putra Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi