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All Journal International Journal of Applied Power Engineering (IJAPE) Jurnal Pembangunan Pendidikan: Fondasi dan Aplikasi Jurnal Penelitian Saintek Jurnal Pengajaran MIPA Jurnal Pendidikan IPA Indonesia Biotropika Jurnal Akuntabilitas Manajemen Pendidikan Jurnal Pendidikan Biologi Indonesia WARTA EduChemia: Jurnal Kimia dan Pendidikan Jurnal Tadris Kimiya Jurnal Zarah Jurnal Pendidikan Biologi Science and Technology Indonesia Acta Aquatica: Aquatic Sciences Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Orbital: Jurnal Pendidikan Kimia AcTion: Aceh Nutrition Journal BIOEDUSCIENCE Jurnal Ilmu Nutrisi dan Teknologi Pakan PENDIPA Journal of Science Education JURNAL ILMIAH PETERNAKAN TERPADU BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains CARADDE: Jurnal Pengabdian Kepada Masyarakat Jurnal Pendidikan Matematika (JUDIKA EDUCATION) Riau Journal of Empowerment Zero : Jurnal Sains, Matematika, dan Terapan Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jurnal Biosilampari: Jurnal Biologi COMPTON: Jurnal Ilmiah Pendidikan Fisika JPBIO (Jurnal Pendidikan Biologi) Jurnal Biotek Indonesian Physical Review Kasuari: Physics Education Journal (KPEJ) Jurnal Kumparan Fisika JURNAL PENDIDIKAN MIPA Abdimas Universal Jurnal Biogenerasi Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Eduproxima : Jurnal Ilmiah Pendidikan IPA Agrinimal Jurnal Ilmu Ternak dan Tanaman Hydrogen: Jurnal Kependidikan Kimia Bioscientist : Jurnal Ilmiah Biologi Prima Abdika: Jurnal Pengabdian Masyarakat Jurnal Inovasi Penelitian dan Pengabdian Masyarakat Jurnal Pijar MIPA Jurnal Inovasi Pengabdian Masyarakat Pendidikan DIKSAINS : Jurnal Ilmiah Pendidikan Sains Al Jahiz: Journal of Biology Education Research Andromeda: Jurnal Pengabdian Masyarakat Rafflesia Jurnal Pendidikan MIPA Jurnal Biosilampari: Jurnal Biologi IJIS Edu : Indonesian Journal of Integrated Science Education SPEKTRA: Jurnal Kajian Pendidikan Sains
Nursaadah, Euis
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Pengembangan KIT Praktikum Spektrofotometer Sederhana Deteksi Pencampuran Minyak Kelapa Sawit Berbasis STEM-PjBL untuk Meningkatkan Keterampilan Proses Sains Mahasiswa Dea Safitri; Nurhamidah; Rendy W. Wardhana; Euis Nursa'adah
PendIPA Journal of Science Education Vol 10 No 3 (2026): July - September
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.10.3.974-979

Abstract

The goal of this study was to develop and evaluate the feasibility and preliminary effectiveness of a STEM-PjBL-based simple spectrophotometer practicum kit for detecting palm oil adulteration with used cooking oil and improving students’ science process skills. The study employed a Research and Development method using the ADDIE model and a one-group pretest-posttest design. The product consisted of a practicum kit, a guidebook containing student worksheets, and a web application. The implementation involved 24 Chemistry Education students at the University of Bengkulu. Feasibility was examined through expert validation, Aiken’s V, and a limited trial, whereas effectiveness was evaluated using normalized gain, the Shapiro-Wilk test, a paired samples t-test, and paired Cohen’s d. Expert validation yielded a feasibility score of 85.23% (highly feasible), Aiken’s V values of 0.83–1.00, and a limited-trial score of 94.64%. The kit readings showed a very strong relationship with the UV-Vis reference data at 338 nm (R²=0.9980; RMSE=0.0279). The mean science process skills score increased from 14.00 to 30.25, with a normalized gain of 0.74. Difference scores were normally distributed (p=0.138), and the paired t-test indicated a significant improvement, t (24) =15.901, p<0.001, with a very large effect size (d=3.246). The kit was highly feasible and demonstrated preliminary effectiveness for instrumental analytical chemistry practice; however, the absence of a control group limits causal generalization.
Co-Authors A. Mudzakir A. Setiawan Aceng Ruyani ACENG RUYANI Aceng Ruyani Aceng Ruyani Adi Putranto Adriataspen, Milzen Afrizal Mayub Afrizal Mayub Afrizal Mayub Afrizal Mayub Afrizal Mayub Agus Sudaryono Agustina, Resta Ahmad Aminudin Ahmad Mudzakir Alfia Novera Indah Esa Kasih Ananda, Resti Annisa Luthfiah ardana, Rendy Wikrama W Areski Febriani Ariefa Primair Yani Ariefa Primair Yani Ariefa Primairyani Ariefa Primairyani Ariefa Primairyani, Ariefa Arsela Eko Listiono Asti, Nora Ayudi Athika Ulfah Putri Auriel Zahra Alisha Ayu Shinka Permata Sari Azvadennys Vasiguhamiaz Barke, H. D. Bhakti Karyadi Bhakti Karyadi BHAKTI KARYADI Bhakti Karyadi Bramastia Budi Maryani Budiyanto Budiyanto Chairunisa, Aprilia Chandra, I Nyoman Dea Safitri Defianti, Aprina Deka Agustina Deka Agustina Delima, Ega Marita Deni Parlindungan Detty Fitriani Devi Kurniawati Dewi Handayani Dewi, Ria Kemala Diah Suprihatin Diana R. Eddy Dinda Oktarina Ega Dwi Permata Sari Ega Marita Delima Elsi Adelia Fitri Endang Widi Winarni Endang Widi Winarni Esterlin Fadhilah, Annisa Alya Fahmizal, F. Fahmizal, Fahmizal Fannyda, Raidatul Fenty Fitrian Sari Fitri April Yanti Ghina Febrianti gumono Hadirama, Khanna Harlita Henny Johan Henny Johan Henny Johan Herlina Apriska Hizkia Mahezra Agustin Ikmi Marlina Imas Eva Wijayanti Indah Langitasari Indarini Dwi Pursitasari Indra Sakti Indra Sakti Intan Febrian Ira Maisarah Isriyanti Affifah, Isriyanti Iwan Setiawan Iwan Setiawan Johan, H. Junaini, Junaini Karyadi , Bhakti Khairunnisa Khairunnisa Laberta, Tinu Lazfihma, L Lazfihma, Lazfihma Lena Rahmidar Liliasari , Liliasari Liliasari Lilis Rusmiati, Lilis Lizken Sitorus Lukmanul Hakim Lukmanul Hakim M. Lutfi Firdaus M. Raynaldo Sandita Powa Marliansa, Meiredo Mayub, A. Mayub, Afrizal Mayub, Afrizal Mega Anggelena Melda Nuari Handini Mellyta Uliyandari Uliyandari Mochammad Yusa, Mochammad Muhamad Diki Permana Naftalia Artaria Hutabarat Nanda Cahaya Safitri Nensi Pitaloka Nina Gusti Nirwana Nirwana Nirwana, Nirwana Noorzana Khamis Nur ‘Azah Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nurhamidah Nurul Husna Parlindungan , Deni Parlindungan, Deni Pasaribu, Mika Yanti Arita Pathonawiratama, Gustin Primair Yani, Ariefa Purnama, Intan Putri Nutriastuti Ratu Eva Febriani Rendy W Wardhana Rendy W. Wardhana Rendy Wikrama Wardana Rendy Wikrama Wardana Rendy Wikrama Wardana Rendy Wikrama Wardana Rina Elvia, Rina Rinda Fitri Handayani Rita Sartika Rizka Fitria Ningrum Rizki M. Okumura Roleka Julia Marcellina Ruyani , Aceng Sagita, Fitria Santhy Wyantuti Sari, Ega Dwi Permata Sari, Fenty Fitrian Sari, Frisa Rahmah Septika Amalia Umaro Shabrina, Annida Nurul Sipriyadi Sipriyadi Sitorus, Jernia Rulintan Sonia, Gina Susanti Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Suzieleez Syrene Abdul Rahim Syafriadin, Syafryadin Tanda Nauli Sitorban Tiara Dia Amanda Tita Sunggarani Triana, Yorika Triyanti, Dwi Erni Tuherni, Erni Uliyandari, Mellyta Umaya Umaya, Umaya Urip Santoso Wahyuningsih, Endah Tri Wainarisi, Esterlin Wardana, Rendy W. Wardana, Rendy Wikrama Wardaya, R. W. Widia Gusti Wikrama Wardana, Rendy Wiwit, Wiwit Yeni Wahyuni Hartati Yunita Yunita