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All Journal International Journal of Evaluation and Research in Education (IJERE) Jurnal Pendidikan Vokasi Jurnal Penelitian dan Evaluasi Pendidikan BIOTROPIA - The Southeast Asian Journal of Tropical Biology Jurnal Infinity Jurnal Riset Pendidikan Matematika SIGMA: Jurnal Pendidikan Matematika REiD (Research and Evaluation in Education) PRISMA Juring (Journal for Research in Mathematics Learning) Dinamisia: Jurnal Pengabdian Kepada Masyarakat PeTeKa AXIOM : Jurnal Pendidikan dan Matematika JURNAL PENDIDIKAN TAMBUSAI PINUS: Jurnal Penelitian Inovasi Pembelajaran EDUKATIF : JURNAL ILMU PENDIDIKAN Symmetry: Pasundan Journal of Research in Mathematics Learning and Education Journal of Authentic Research on Mathematics Eduacation (JARME) Perspektif Pendidikan dan Keguruan Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Innovation in Educational and Cultural Research Jurnal Fibonaci: Jurnal Pendidikan Matematika Mattawang: Jurnal Pengabdian Masyarakat Mosharafa: Jurnal Pendidikan Matematika Rambideun : Jurnal Pengabdian Kepada Masyarakat Community Education Engagement Journal Plusminus: Jurnal Pendidikan Matematika Kognitif: Jurnal Riset HOTS Pendidikan Matematika Mathematics Research and Education Journal Inovasi Matematika (Inomatika) Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Tamansiswa International Journal in Education and Science (TIJES) Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Polinomial : Jurnal Pendidikan Matematika Journal of Research in Science and Mathematics Education INCOME: Indonesian Journal of Community Service and Engagement Jurnal Penelitian Ilmu Pendidikan Indonesia Jurnal Pengabdian Masyarakat Bangsa International Journal of Trends in Mathematics Education Research (IJTMER) Jurnal Infinity Jurnal Pendidikan MIPA
Andrian, Dedek
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Why do students struggle to understand composition functions? Analysis of learning obstacles in vocational education Dwika Saputri; Reni Wahyuni; Dedek Andrian; Nofriyandi Nofriyandi
AXIOM : Jurnal Pendidikan dan Matematika Vol 15, No 1 (2026)
Publisher : State Islamic University of North Sumatra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/axiom.v15i1.29352

Abstract

Difficulties in understanding abstract mathematical concepts, particularly functions and function composition, are still commonly experienced by students, especially those in Vocational High Schools (SMKs). This study aimed to identify the learning obstacles experienced by eleventh-grade Vocational High School (SMK) students in learning functions and function composition. This study employed a qualitative descriptive approach as the initial stage of Didactical Design Research (DDR). Data were collected through diagnostic tests, semi-structured interviews, and documentation to identify learning obstacles related to function composition. The results indicate that students experienced various learning obstacles. They had difficulty understanding the concepts of functions and function composition, as reflected in their inability to distinguish between the two concepts and their dependence on examples provided by teachers, indicating epistemological obstacles. In addition, students experienced difficulty performing substitutions, determining the order of function composition, and applying solution procedures systematically, indicating instrumental ontogenic obstacles. The interview results also revealed that learning practices oriented toward memorization contributed to these difficulties, indicating didactical obstacles. Therefore, students’ difficulties in learning function composition were influenced by epistemological, instrumental ontogenic, and didactical obstacles. These findings provide a basis for developing more effective learning designs that emphasize conceptual understanding.
Pengembangan Perangkat Pembelajaran Menggunakan Model Reciprocal Teaching Pada Materi Bentuk Aljabar Kelas VII SMP Negeri 1 Mandau widya elizabeth sinaga; sindi amelia; dedek andrian; sri rezeki
Jurnal Fibonaci: Jurnal Pendidikan Matematika Vol. 4 No. 2 (2023): JURNAL FIBONACI: JURNAL PENDIDIKAN MATEMATIKA
Publisher : Prodi Pendidikan Matematika FMIPA Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jfi.v4i2.44571

Abstract

Yang melatar belakangi penelitian ini peneliti menemukan bahwa prestasi belajar matematika Kelas VII SMP Negeri 1 Mandau dapat dikatakan kurang. Hal tersebut dapat diketahui dari nilai siswa yang masih belum mencapai KKM. Untuk mengatasi hal tersebut guru sudah melakukan berbagai upaya yaitu dengan mengadakan diskusi kelompok, menambah pekerjaan rumah dan menambah jam belajar diluar jam belajar sekolah. Penelitian ini membahas tentang pengembangan perangkat pembelajaran yang menggunakan model pembelajaran Reciprocal Teaching  pada pokok bahasan bentuk aljabar  yang dilakukan di kelas VII. Produk yang akan dikembangkan berupa RPP dan LKPD yang memuat 4 kali pertemuan. Tujuan dikembangkan perangkat pembelajaran adalah untuk menghasilkan produk baru atau menyempurnakan produk yang sudah ada yang dapat dipertanggungjawabkan. Adapun tujuan lainnya adalah untuk menghasilkan perangkat pembelajaran yang mampu memecahkan masalah pembelajaran di kelas.  Perangkat pembelajaran yang dikembangkan dalam penelitian ini fokus pada pengembangan model ADDIE (Analysis-Design-Develop-Implement-Evaluate). Lembar validasi RPP dan LKPD merupakan alat yang digunakan untuk mengumpulkan hasil data yang diperoleh. Metode pengumpulan data yang diterapkan adalah non tes dengan memvalidasi perangkat oleh validator, yaitu dua orang dosen matematika dan dua orang guru matematika. Penelitian ini memperoleh hasil validasi RPP sebanyak 89,72% dengan kategori valid dan 88,20% hasil validasi LKPD dengan kategori valid.
Analisis Komprehensif Potensi Farmakologis dan Toksisitas Senyawa Bioaktif Utama pada Kayu Bajakah (Spatholobus Littoralis Hassk): Integrasi Studi in Silico dan Bukti Empiris Nerdy Nerdy; Nilsya Febrika Zebua; Rini Karlina Putri Zega; Nabilah Dinda Ramadani; Sara Ariska Purba; Furqaan Ali Kusuma; Dedek Andrian
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 5 No. 1 (2026): April : JURRIMIPA: Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v5i1.8589

Abstract

This study aims to comprehensively evaluate the potential pharmacological activities and safety profiles of seven secondary metabolite compounds (Caffeic Acid, Syringic Acid, Quercetin, Luteolin, p-Coumaric Acid, Ferulic Acid, and Epicatechin) identified in the Bajakah plant (Spatholobus littoralis Hassk.). The research approach integrates in silico analysis using the PubChem database, biological activity prediction via PASS Online, oral toxicity assessment through ProTox-II, and pharmacokinetic evaluation using pkCSM, which were subsequently validated through an empirical literature review. The results indicate that these compounds exhibit significant activity probabilities, particularly as antimutagenic, antiseptic, and antioxidant agents. Luteolin demonstrated the highest antimutagenic potential, while Quercetin showed dominant antioxidant activity. Toxicity profiling revealed that Luteolin and Caffeic Acid possess the highest safety levels (Class 5), whereas Quercetin requires special attention (Class 3). These computational findings strongly correlate with empirical evidence demonstrating that Bajakah extract exhibits broad-spectrum antibacterial activity against Staphylococcus aureus, antifungal activity against Candida albicans, as well as high antioxidant and anti-inflammatory capacities. This study provides a strong molecular foundation for the development of Bajakah as a safe and effective phytopharmaceutical candidate.
Pengembangan Media Pembelajaran Prisma Berbasis Macromedia Flash Dengan Desain Pembelajaran Assure David Maclinton; Dedek Andrian
Jurnal Inovasi Matematika Vol. 4 No. 1 (2022): Inovasi Matematika
Publisher : Pendidikan Matematika Universitas Muhammadiyah Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (981.655 KB) | DOI: 10.35438/inomatika.v4i1.323

Abstract

Penelitian ini bertujuan untuk mengembangkan media pembelajaran prisma berbasis macromedia flash dengan desain pembelajaran ASSURE yang valid dan praktis. Penelitian & Pengembangan (R&D) ini menggunakan desain pembelajaran ASSURE. Subyek pengembangan media pembelajaran Macromedia Flash adalah siswa salah satu SMP Negeri di Ujung Batu Kabupaten Rokan Hulu. Instrumen penelitian berupa lembar penilaian validitas pakar dan praktisi. Analisis data menggunakan statistik deskriptif untuk melihat persentase jawaban dari para ahli dan praktisi untuk memperoleh kesimpulan. Macromedia Flash yang dikembangkan memiliki fitur-fitur animasi yang menarik perhatian siswa sehingga siswa memiliki minat atau motivasi yang tinggi dalam belajar matematika pada level apapun. Para ahli dan praktisi menilai media pembelajaran Macromedia Flash dalam kategori valid dengan nilai rata-rata 83,67%. Para ahli dan praktisi juga menilai media pembelajaran Macromedia Flash dalam kategori praktis dengan rata-rata 84,37%.
Co-Authors A Halim A Hamid A. Muammar Alawi Abdul Halim bin Ali Abdurahman Abdurrahman Abdurrahman Abdurahman Abdurrahman Abdurrahman Abu Yasid Afib Rulyansah Agusnimar Agusnimar, Agusnimar Ainirohmah, Nailu Akbar Septiawan Akbar Septiawan Andi Junaidi Anggaraini, Dila Anggita Maharani Anuraga Jayanegara Arbi Haza Nasution, Arbi Haza Ari Setiawan Ari Setiawan Astri Wahyuni Astri Wahyuni Astri Wahyuni Astri wahyuni Aswanto, Aswanto Auladina, Hafizah Aulia Sthephani Aulia Sthephani Aulia Sthephani Ayuni, Ayuni Azim A. Yuldashev Azim Abdurakhmanovich Yuldashev Basri Jumin, Hasan Cahyani, Resti Endah Cecep Hidayat Dacara, Editha David Maclinton David Maclinton Dewi Maharani Dian Cita Sari Dwika Saputri Editha Dacara Effendi, Leo Adhar Emkhad Arif Ezi Apino Fadilla, Jihan Fadillah, Masrianti Fajriah, Khadijatul Faridatul Masruroh Fariza MD Sham Febri Loska Febri Loska Felestin Felestin Fiki Hidayat Fini Rezy Enabela Novilanti Fini Rezy Enabela Novilanti Firdaus Firdaus Fitri Ramadhani Fitri Wulan Sari Fitri, Ainissya Fitriana Yolanda Fitriana Yolanda Furqaan Ali Kusuma Hajar Nurma Wachidah Hanandyo Dardjito Hayu, Sri Rah Hindun Syarifah, Hindun Hussein, Nuraisyah Ihwana As’ad Ilham Muhammad Ilham Tri Maulana Indah Widiati Indah Widiati Indah Widiati, Indah Indriati, Mefa Ismail Mulia Hasibuan Istikomah, Endang Khairas, Eri Ester Khairul Anwar Khairunnas Rajab Kunalfi Reza Luthfiana Laksono Trisnantoro Leo Effendi Lilis Angraini Lilis Marina Lilis Marina Angraini Loska, Febri Lukman Handoko M.Rizki Fadhilah Maharani, Deswita Mahmudah, Nurhayatun Mai Zunianti Maimunah, Maimunah Makmur Harun Marina, Lilis Marwaziah, Nirmala Masrianti Fadillah Mefa Indriani Mega Berlin Melissa Melissa Miftahir Rizqa Mizan Abrory Mohd Kasturi Nor Bin Abd Aziz Muhamad Yunus Muhammad Marqozi Muhibuddin Zaini Mulyajaya, Muhamad Satria Muntaha Nabil Maulana Yuspelto Nabilah Dinda Ramadani Nana Karina Mayda Nerdy Nerdy Nilsya Febrika Zebua, Nilsya Febrika Nofriyandi Nofriyandi Nofriyandi Nofriyandi Nofriyandi Noorilham bin Ismail Noviarni Noviarni, Noviarni nur hafizah Nurfajar Wahyuliana Nurfajar Wahyuliana Nurul Azizah Nurul Fauziah Nurvani Pipit Sari Puspitorini Prima Wahyu Titisari Putri Wahyuni Qudsi, Rahma Rachman Sidharta Arisandi Ramon Muhandaz Ratri, Yulia Reni Wahyuni Reni Wahyuni Revika Nofriani Rezi Ariawan Rezi Ariawan Rini Karlina Putri Zega Risnawati Risnawati Rista Rista Riyan Hidayat RR. Ella Evrita Hestiandari Salman Saragih SAMSUL HADI Sara Ariska Purba Saragih, Salman Sartika Putri Sasmarianto, Sasmarianto Septiawan, Akbar Shanty, Yustika Laras sinaga, widya elizabeth Sindi Amelia Sindi Amelia, Sindi Siti Kholifatun Sa’diah Siti Maisaroh Siti Nurhalimah Siti Nurhalimah Siti Nurhalimah Siti Seituni Sri Murlianti Sri Rezeki Sri Rezeki Stevano, Nandito suhandri, suhandri Sulaiman Dorloh Suripah Suripah Syahril Siddik Syarul Ramadhan Syarul Ramadhan Syarul Ramadhan Tria Wulandari UMMI RASYIDAH Wahyu Lestari Utami Wahyuliana, Nurfajar Wahyuni, Reni widya elizabeth sinaga Winda Gusfitri Yuki Shiozaki Yulia Ratri Yulianri Rizki Yanza Yusuf Devan Nr Zafrullah Zafrullah Zafrullah Zendyah Zetriuslita Zubaidah Amir Zubaidah Amir MZ