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All Journal Voteteknika (Vocational Teknik Elektronika dan Informatika) JTEV (Jurnal Teknik Elektro dan Vokasional TELKOMNIKA (Telecommunication Computing Electronics and Control) JINOP (Jurnal Inovasi Pembelajaran) Jurnal Pendidikan Teknik Mesin Edukasi: Jurnal Pendidikan Al Ishlah Jurnal Pendidikan QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Penelitian Pendidikan IPA (JPPIPA) Martabe : Jurnal Pengabdian Kepada Masyarakat JURNAL PENDIDIKAN TAMBUSAI Mimbar Ilmu International Journal of Educational Dynamics (IJEDS) Ensiklopedia of Journal EDUKATIF : JURNAL ILMU PENDIDIKAN Jurnal Pendidikan dan Keluarga MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering AEEJ : Journal of Automotive Engineering and Vocational Education Juwara : Jurnal Wawasan dan Aksara Jurnal Vokasi Mekanika Ranah Research : Journal of Multidisciplinary Research and Development Journal of Innovative and Creativity Jurnal Penelitian Pendidikan Indonesia Edumaspul: Jurnal Pendidikan JRTI (Jurnal Riset Tindakan Indonesia)
Refdinal, Refdinal
Departemen Teknik Mesin, Fakultas Teknik, Universitas Negeri Padang
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Pengembangan perangkat pembelajaran project based learning pada mata pelajaran produktif kreatif dan kewirausahaan di sekolah menengah kejuruan Azhari Syamsu; Ganefri Ganefri; Refdinal Refdinal; Aswardi Aswardi
JRTI (Jurnal Riset Tindakan Indonesia) Vol. 7 No. 3 (2022): JRTI (Jurnal Riset Tindakan Indonesia)
Publisher : IICET (Indonesian Institute for Counseling, Education and Therapy)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/30031992000

Abstract

Permasalahan yang ada ketika proses pembelajaran produk kreatif dan kewirausahaan belum memiliki perangkat pembelajaran yang inovatif dan terintegrasi dengan materi pembelajaran produk kreatif dan kewirausahaan maka diperlukan perangkat pembelajaran berbasis proyek yang dapat membantu siswa belajar secara mandiri. Metode yang digunakan adalah penelitian dan pengembangan (R&D) dengan model pengembangan 4-D. Subjek penelitian adalah mahasiswa jurusan teknik elektro yang mengambil mata kuliah produk kreatif dan kewirausahaan. Jenis datanya adalah data primer dimana datanya disediakan oleh guru dan siswa. Instrumen pengumpulan data berupa angket. Teknik analisis data deskriptif untuk mendeskripsikan validitas, kepraktisan dan efektivitas perangkat pembelajaran berbasis proyek. Hasil yang diperoleh dari penelitian pengembangan ini adalah sebagai berikut: (1) Menghasilkan perangkat pembelajaran berbasis proyek, (2) Validitas perangkat pembelajaran berbasis proyek, dinyatakan valid pada aspek isi, aspek format dan aspek penyajian, ( 3) Kepraktisan Perangkat pembelajaran berbasis proyek, berdasarkan tanggapan dosen, dinyatakan sangat praktis dan berdasarkan tanggapan siswa, dinyatakan sangat praktis, (4) Keefektifan perangkat pembelajaran berbasis proyek, dinyatakan sangat efektif dalam meningkatkan aspek pengetahuan siswa yang terlihat dari peningkatan hasil belajar siswa dalam pembelajaran dan peningkatan aspek keterampilan siswa. dilihat dari hasil penugasan proyek yang dihasilkan.
English English Rofi Chandra; Syahril Syahril; Ambiyar Ambiyar; Refdinal Refdinal
Jurnal Penelitian Pendidikan IPA Vol 9 No SpecialIssue (2023): UNRAM journals and research based on science education, science applic
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9iSpecialIssue.6109

Abstract

The development video tutorials was carried out to address the challenges in learning CNC/CAM at Vocational High Schools (SMK), especially in the CNC/CAM subject. In this research, the 4D model (Define, Design, Develop, and Disseminate) stages of development were employed, which include needs analysis, design, development, and dissemination. The validation results by media experts and subject matter experts indicate that these video tutorials are highly suitable, with a validity percentage of 89.24% by media experts and 85% by subject matter experts. These results demonstrate that the CAM learning videos developed through the 4D model are suitable for use in the learning process. The development of video tutorials for CNC/CAM learning in vocational high schools can be an effective solution to overcome challenges in students' understanding and skills in this subject. By using the 4D model for development, the high validation results from media and subject matter experts indicate that these video tutorials have excellent quality. The use of these video tutorials is expected to enhance students' understanding and skills in the field of CNC/CAM, which are crucial for their preparation in the industrial world. Furthermore, this research also provides recommendations for utilizing these video tutorials in broader learning contexts, teacher training, and the development of other materials.
Development of a Job Sheet for Mechanical Measuring Instruments Using Virtual Learning and Project-Based Learning in the Motorcycle Engineering Department at SMK Negeri 2 Palembang Adel Lia Mardiana; Arwizet K; Refdinal Refdinal; Jonni Mardizal; Abdul Habib Arrasyidi Desky
Jurnal Penelitian Pendidikan IPA Vol 12 No 5 (2026): In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i5.15136

Abstract

This study aims to develop a mechanical measurement practical worksheet integrated with Project-Based Learning (PjBL) and delivered through a Learning Management System (Google Classroom), as well as to examine its validity, practicality, and effectiveness. The study employed the ADDIE development model, consisting of analysis, design, development, implementation, and evaluation stages, with PjBL principles embedded in the product design and learning activities. The participants were 35 tenth-grade vocational students (N=35). The results showed that the developed worksheet achieved a very high level of validity based on expert evaluations of media, content, and language, with an average score of 94.6%. In terms of practicality, teacher and student responses reached 92.72% and 93.18%, respectively, both categorized as “very good,” indicating that the worksheet is easy to use and supports flexible practical learning. Regarding effectiveness, students’ learning outcomes improved significantly, with mean scores increasing from 30.92 (pretest) to 86.00 (posttest) and an N-gain of 0.80 (high category). Hypothesis testing confirmed a significant difference (p < 0.05) before and after implementation. In conclusion, the PjBL-integrated mechanical measurement practical worksheet distributed through Google Classroom as an LMS is valid, practical, and effective in improving students’ learning outcomes.
Curriculum Management Quality in Vocational High Schools: Planning, Organizing, Implementation, and Evaluation Almes Gangga; Wirda Yetti; Rijal Abdullah; Refdinal Refdinal
Juwara: Jurnal Wawasan dan Aksara Vol. 6 No. 1 (2026)
Publisher : Yayasan Pendidikan dan Pengembangan Harapan Ananda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58740/juwara.v6i1.784

Abstract

Curriculum management quality is a fundamental determinant of educational effectiveness in vocational high schools (SMK). This study assesses curriculum management quality across four dimensions: curriculum planning (D1), curriculum organizing (D2), curriculum implementation (D3), and curriculum evaluation (D4), from the perspectives of school administrators and teachers. A quantitative survey design was employed involving 145 respondents selected through proportionate stratified random sampling across five SMK in West Sumatra, Indonesia. Data were collected using a validated questionnaire (44 items; Cronbach's alpha = 0.91) and analyzed using descriptive statistics and one-way ANOVA. Results indicate that overall curriculum management quality achieved a mean score of 3.69 out of 5.00 (Good category). Curriculum Planning (D1) achieved the highest mean (M = 3.82), while Curriculum Evaluation (D4) was the most critical dimension (M = 3.58). Significant differences in perceptions were found across respondent positions (F = 4.83, p = 0.003). This study contributes an integrated four-dimension quantitative framework for assessing curriculum management quality in SMK, providing empirical evidence that evaluation functions represent the weakest link in the curriculum management cycle and that multi-stakeholder data collection is essential for accurate institutional quality monitoring.
Analisis Karakteristik Udara Pendingin Terhadap Kinerja Air Conditioner (AC) Aqilvin Berliansyah; Arwizet Karudin; Refdinal Refdinal; Remon Lapisa
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 1 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i1.838

Abstract

A stable room temperature is essential for comfort. This study tests the performance of split wall air conditioners with R-22 refrigerant and evaluates how to improve their efficiency through the influence of cooling air temperature. The experiment was carried out by varying the air temperature and cooling load using a heater. Data is taken every 15 minutes for 2 hours using a digital thermometer. The results showed that the maximum coefficient of performance (COP) value reached 8 indoors and 7.2 outdoors. Meanwhile, the maximum energy efficiency ratio (EER) value was recorded at 4.2 indoors and 3.7 outdoors. The stability of COP and EER values indicates that the Split Air Conditioner can operate efficiently despite variations in air temperature and cooling load. Cooler cooling air proved to be crucial in improving system efficiency. Conversely, higher refrigerant loads tend to decrease efficiency. However, this drop can be minimized by keeping the cooling air temperature low. The selection of the appropriate refrigerant, such as R-22, also plays an important role in supporting optimal performance. The combination of cooler cooling air and the right refrigerant allows the split air conditioner to operate with high efficiency. This research provides an important basis for the development of energy-efficient and efficient cooling systems. Optimizing the temperature of the cooling air is one of the main keys in improving the efficiency of the cooling system. With the right approach, split air conditioners can be used more effectively to create thermal comfort while saving energy.
Co-Authors - Primawati Abdul Aziz Abdul Habib Arrasyidi Desky Abdullah, MT, Dr. Rijal Adel Lia Mardiana Ahda Sabila Ahmad Arif Almes Gangga Alvien Khardin Ambiyar, Ambiyar Ambyar Ambyar Andre Kurniawan Antoni Hilman Aprizal Saputra Aqilvin Berliansyah Arisman Telaumbanua Arwizet Arwizet Arwizet Arwizet, Arwizet Aswardi Aswardi Asyahri Hadi Nasyuha Azhari Syamsu Azmil Azman Budi Syahri Bulhadi Bulhadi Buyung Solihin Hasugian Dedy Irfan Diki Alfarizi Dino Adi Putra Donny Fernandez Dzaky Dzulqa Arijal Edidas , Edidas Evan Prakarsa Fadhilah Fadhilah Fadhli Ranuharja Febri Prasetya Fikrul Aziz Ganefri . Ginting, Erika Fahmi Hamdani Hamdani Hansi Effendi Hasan Maksum Herisvan Hendra Hermi Zaswita Irma Yulia Basri Jalius Jama Jonni Mardizal Junil Adri Khofifah Alawyah M Iqbal M. Yasep Setiawan Marsono Marsono Martias Martias Maryatun Kabatiah Masyuni Hutasuhut Meri Yolanda Mhd Safiq Adzkia Muhammad Adri Muhammad Akhbar Muhammad Ichsan Muslim Muslim Niki Prasetio L Nizwardi Jalinus Nizwardi Zalinus Nurdin Hendri Nurhasan Syah OSKAH DAKHI Purwanto, Wawan Purwantono Purwantono Ramadhan, Muhammad Sabir Randa M Remon Lapisa Reti Handayani Ridwan Ridwan Rifelino Rifelino Riky Satria Risfendra Risfendra Rizki Hardian Sakti Rofi Chandra Ronal Watrianthos Rosmidah Hasibuan Salsabila, Unik Hanifah Sri Rizki Putri Primandari Suparno Suparno Suwondo Suwondo Syaflan Sandi Harta Putra Syafni Yulia Devani Syahrial Syahrial Syahril Syahril Syaiful Islami Toto Sugiarto Toto Sugiarto Usmeldi Usmeldi Wagino Waskito Waskito Waskito Willy Vernando Wirda Yetti Yanita, Merita Yanto, Doni Tri Putra Yoga Andika Yohanni Syahra Yolanda Ferdani Melinton Yolanda Putri Yolli Fernanda Yufrizal Yufrizal Yuke Permata Lisna