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All Journal Jurnal Penelitian dan Pembelajaran Fisika Jurnal Pendidikan IPA Indonesia Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Science and Technology Indonesia JIPF (Jurnal Ilmu Pendidikan Fisika) Jurnal Penelitian Pendidikan IPA (JPPIPA) IRJE (Indonesian Research Journal in Education) JURNAL EKSAKTA PENDIDIKAN (JEP) JPF : JURNAL PENDIDIKAN FISIKA JURNAL PENDIDIKAN TAMBUSAI International Journal of Educational Dynamics (IJEDS) Eksakta : Berkala Ilmiah Bidang MIPA Jurnal Lentera Pendidikan Pusat Penelitian LPPM UM Metro JURNAL PENDIDIKAN MIPA Pelita Eksakta Jurnal Ilmiah Profesi Pendidikan Natural Science: Jurnal Penelitian Bidang IPA dan Pendidikan IPA Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika Pillar of Physics: Jurnal Berkala Ilmiah Fisika Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) YASIN: Jurnal Pendidikan dan Sosial Budaya Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Innovative Physics Teaching (JIPT) Journal of Climate Change Society Physics Learning and Education Edusainstika: Jurnal Pembelajaran MIPA Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Journal of Experimental and Applied Physics Inventa: Journal of Science, Technology, and Innovation Jurnal Penelitian Pembelajaran Fisika
Ratnawulan .
Departement Of Physics, Universitas Negeri Padang, Padang, 25132, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Pengembangan Bahan Ajar Digital Suhu dan Kalor Berbasis Model PBL Berbantuan Flip Pdf Professional untuk Siswa Fase F SMAN 7 Padang Fitratul Ilahiyah; Yenni Darvina; Ratnawulan Ratnawulan; Fadhila Ulfa Jhora
Jurnal Ilmiah Profesi Pendidikan Vol. 10 No. 1 (2025): Februari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jipp.v10i1.3097

Abstract

SMAN 7 Padang telah memiliki berbagai bahan ajar, termasuk bahan ajar digital yang dikembangkan oleh guru untuk proses pembelajaran. Namun, belum ada bahan ajar digital yang berbasis model PBL. Terdapat peluang untuk meningkatkan kualitas pembelajaran dengan bahan ajar berbasis teknologi yang menarik, guna meningkatkan minat, motivasi, dan gaya belajar siswa dalam Fisika. Flip PDF Profesional merupakan software untuk mengonversi materi dalam format file PDF menjadi bentuk buku elektronik (e-book) yang dapat ditambahkan gambar/ilustrasi, animasi, dan video yang menarik. Dalam penelitian yang akan dikembangkan oleh peneliti yaitu pengembangan Bahan Ajar Digital Suhu dan Kalor Berbasis Model PBL berbantuan Flip Pdf Profesional Untuk Siswa Fase-F Pada E-learning SMAN 7 Padang. Jenis penelitian yang digunakan peneliti adalah penelitian dan pengembangan atau yang disebut istilah Research Development (R&D), menggunakan skala Aiken dalam mengolah data. Kesimpulan penelitian yaitu Bahan Ajar Digital Suhu dan kalor berbasis model PBL berbantuan flip pdf professional  untuk siswa fase F telah diperoleh produk yang valid dan layak digunakan setelah melakukan evaluasi oleh ahli dengan rata-rata nilai validitas sebesar 0,85. Hasil pengujian praktikalitas dari produk bahan ajar digital suhu dan kalor berbasis model model PBL berbantuan flip pdf professional untuk siswa fase F telah didapatkan produk yang praktis dan dapat digunakan dalam pembelajaran Fisika. Hal ini dibuktikkan dari penilaian praktikalitas yang diberikan kepada guru dengan rata-rata persentase sebesar 98,9% kategori sangat praktis, kemudian disebarkan kepada satu kelas di kelas XI dengan rata-rata persentase sebesar 88,7% berada dalam kategori sangat praktis.
Sintesis dan Karakterisasi Material Beton Hidrofobik dan Self Healing Berbasis Mikroorganisme Yulia Maulida; Ratnawulan; Riri Jonuarti; Harman Amir
Jurnal Penelitian Pendidikan IPA Vol 9 No 12 (2023): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i12.5841

Abstract

The high water absorption of concrete causes the concrete to easily experience cracking and damage. One way to increase the durability of concrete is by adding microbes which can fill the micro cavities in the concrete with the resulting Calcium Carbonate (CaCO3) deposits. However, the weakness of using microorganisms is that they are unable to withstand high hydration heat. Therefore, by varying the temperature in this research, it is possible to determine the effect of the metabolism of the bacteria produced. This research was carried out to avoid damage by creating a hydrophobic and self-healing layer which helps increase the durability and strength of the concrete. The concrete sample made resembles a cube measuring 5 cm x 5 cm x 5 cm. The manufacturing materials are Portland cement, Otawa sand, distilled water and a mixture of E. coli bacteria. Heating was carried out using an oven at temperatures of 30, 60, 90, and 120 oC. Characterization testing was carried out using a Cpmreson machine, XRD and contact angle testing.
Effect E. coli Bacteria Concentration as Self Healing on Compressive Strength and Hydrophobic Properties on Micro Cracks of Concrete Yolla Octriany; Ratnawulan Ratnawulan
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.5911

Abstract

Buildings are facilities created by humans to support various human activities. Potential damage to old buildings, such as the appearance of cracks in building concrete. Self-healing is carried out by bacteria to repair micro cracks that occur in concrete by deposition of CaCO3. Bacteria-based preservatives consist of bacterial spores and organic compounds that are incorporated into the concrete structure. This research aims to determine the effect of variations in the concentration of E. coli bacteria on compressive strength and contact angle. Based on the results of the research data, two research results can be stated. First, the concentration of bacteria affects the compressive strength of the concrete and the maximum compressive strength occurs on day 14. Second, the concentration of bacteria affects the contact angle of the concrete so that it can be said that the concrete is hydrophobic. As for the XRD characterization, intensity data (I), diffraction angle ( ) were analyzed using High Score Plus. FTIR characterization was carried out in the range 4000 cm-1-500 cm-1. SEM characterization to see the morphology of the concrete with a magnification of 2500 times. SEM can also show E. coli bacteria in concrete
Validitas E-Modul Perubahan Iklim dan Pemanasan Global Terintegrasi Model PBL untuk Siswa SMA Tasmiyatul Iffah; Ratnawulan Ratnawulan
YASIN Vol 6 No 2 (2026): APRIL
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/yasin.v6i2.9826

Abstract

The development of electronic teaching materials has become an important issue in science learning, but studies that specifically discuss the development of e-modules on climate change and global warming materials integrated with the Problem Based Learning model remain limited. This study aimed to determine the validity level of the developed e-module. This study used a Research and Development (R&D) method with the 4D development model consisting of the define, design, develop, and disseminate stages. The implementation of the study was limited to the develop stage, particularly expert appraisal or validity testing by three experts as validators. The validation instrument was developed based on teaching material development guidelines, with assessment components including material substance, instructional design, visual communication, software utilization, and the suitability of the teaching materials with the learning model. The results of the validity test from the three validators showed a percentage score of 91%, which was categorized as very valid. The conclusion of this study confirms that the e-module on climate change and global warming materials integrated with the Problem Based Learning model is declared valid, so it has the potential to be used as electronic teaching material that supports problem-based learning.
Analysis Of Cape Index And Total Index Thresholds Towards Cumulonimbus Cloud And Thunderstorm Events At Minangkabau International Airport Indah Yoseva Effendi; Nofi Yendri Sudiar; Ratnawulan; Harman Amir
Journal of Climate Change Society Vol. 4 No. 1 (2026)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Indonesia located along the equator and dominated by oceanic areas, is highly vulnerable to atmospheric dynamics and extreme convective weather. Minangkabau International Airport (BIM), situated in a coastal region of West Sumatra, is frequently affected by cumulonimbus (Cb) clouds and thunderstorms (TS), which pose risks to aviation safety. This study aims to determine the threshold values of the Convective Available Potential Energy (CAPE) index and the Total Totals Index (TT) that are appropriate for local conditions, based on radiosonde and synoptic observation data from 2019–2023, and verified using 2024 data. The CAPE and TT values were analyzed using Sturges’ method to determine frequency intervals and dichotomous analysis to establish threshold effectiveness. Results indicate that CAPE thresholds for Cb clouds range from 495 to 2679 J/kg, while TT thresholds for thunderstorms range from 43.5 to 47.4, depending on the seasonal variation (DJF, MAM, JJA, SON). These thresholds demonstrated strong performance in identifying convective weather events, thus serving as a useful reference for forecasting and enhancing flight safety at BIM.
Needs Analysis to Develop of Project Based Learning Module Assisted by Heyzine Application to Improve Students’ Creative Thinking Skills M Ilham; Dea Stivani Suherman; Ratnawulan Ratnawulan; Fadhila Ulfa Jhora
Jurnal Penelitian Pembelajaran Fisika Vol. 12 No. 1 (2026): JPPF (Jurnal Penelitian Pembelajaran Fisika)
Publisher : Universitas Negeri Padang in collaboration with Association of Mathematics and Natural Sciences Institution for Education of Teaching Staff Indonesia (AMLI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jppf.v12i1.51

Abstract

Efforts to develop 21st century skills have been carried out by changing the curriculum from the 2013 curriculum to an independent curriculum based on 21st century learning. One of the main focuses in this ability is the development of four core competencies known as 4C, including critical thinking and problem solving skills, creativity and innovation, collaboration skills, and effective communication skills. One of the four most important skills that must be developed by students is creative thinking skills. However, in reality, mastery of this ability is still relatively low. This low ability is caused by the teaching materials used in the learning process that have not been fully designed to support students' creative thinking skills and the Project Based Learning (PJBL) learning model. This study aims to analyze the need for developing E-modules based on Project Based Learning (PJBL). This study uses a development research approach with a 4-D model (Define, Design, Development, and Disseminate), which is limited to the Development stage. The results of the study revealed three main findings from the needs analysis: (1) students' creative thinking skills are still low, with a score of 36; (2) Based on teacher interviews, the teaching materials used in the learning process have not been fully designed to support students' creative thinking skills, and the Project Based Learning (PJBL) learning model is one of the learning models applied by teachers but is not yet optimal; (3) Determination of student characteristics, with scores for each indicator, student background 70.25, student learning interest 67.5, student learning motivation 66.67, student learning style 70.88, and digital learning 76.38. The research conclusion obtained from the needs analysis is that the development of an E-Module based on the Project Based Learning model assisted by the Heyzine application to facilitate students' creative thinking skills is very much needed by students.
Implementation of experiment-based learning to improve students’ understanding of corrosion concepts Utama, Fajar Darma; Ratnawulan, Ratnawulan; Fauzi, Ahmad; Amir, Harman; Fauziah, Dary Nasmi
Indonesian Research Journal in Education |IRJE| Vol. 10 No. 2 (2026): IRJE |Indonesian Research Journal in Education
Publisher : Universitas Jambi, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/irje.v10i2.49212

Abstract

This study aims to implement experiment-based learning to improve students’ understanding of corrosion concepts. Experimental learning was selected because it provides more contextual learning experiences and helps students understand scientific concepts through direct observation. The study was conducted through corrosion experiments using iron plates subjected to coating treatment and immersion in NaCl solution with different immersion durations. The learning activities were designed to develop students’ observation, analytical, and problem-solving skills during the experimental process. The study employed an experimental approach by involving students in observing changes in material conditions caused by corrosion processes. The research data were obtained from observation results, practicum documentation, and evaluations of students’ conceptual understanding after the learning activities were completed. The findings showed that experiment-based learning helped students better understand corrosion concepts and the factors influencing corrosion rates. In addition, students demonstrated increased engagement and learning interest during the practicum activities. These findings indicate that experiment-based learning can serve as an effective alternative learning approach to support more meaningful and applicable science learning.  
Development and Validity of Electronic Worksheet Based on POE (Predict-Observe-Explain) to Enhance Students Conceptual Understanding on Measurement Materials mairesma ires; Ratnawulan
Physics Learning and Education Vol. 4 No. 2 (2026): June Edition
Publisher : Department of Physics Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The main problems in physics learning at schools are still low learning outcomes and students’ conceptual understanding, especially on the topic of measurement. One solution to overcome these problems is to develop teaching materials in the form of POE (Predict-Observe-Explain) based E-LKPD. This study aims to describe the characteristics of the E-LKPD and determine its validity, so that it can be used in the learning process. This research is a development research using the Plomp model, which includes three main stages: preliminary research, prototyping phase, and assessment phase. Based on the results, the POE (Predict-Observe-Explain) based E-LKPD on measurement topic has been designed with the following characteristics: (1) the E-LKPD is arranged according to the POE learning model, consisting of activities of predicting, observing & measuring, explaining understood concepts, and evaluation; (2) the E-LKPD is developed using Canva Pro and Heyzine Flipbook; (3) the POE based E-LKPD obtained a validation score of 0.93, categorized as valid in terms of content/material appropriateness, language, presentation, graphic design, application of the POE model, and digital media aspects.
Need Need Analysis for the Design of an Online Module Based on Cognitive Conflict and the Deep Learning Approach to Correct Students’ Misconceptions About Light Waves Kesya Yumna Salsabila; Fatni Mufit; Ratnawulan; Fauziah Ulmi
Edusainstika Vol 6 No 1 (2026)
Publisher : Universitas Islam Negeri Mahmud Yunus Batusangkar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31958/je.v6i1.17441

Abstract

Students’ conceptual understanding of light waves remains relatively low, while the instructional materials currently in use have not been able to optimally facilitate the remediation of misconceptions. This study aims to analyze the need to develop a cognitive conflict-based e-module integrated with the deep learning approach—an approach that emphasizes meaningful, reflective, and enjoyable conceptual understanding through the components of meaningful learning, mindful learning, and joyful learning. The integration of cognitive conflict with the deep learning approach in the topic of light waves represents a novelty in this research, given that previous studies generally focused only on one of these approaches or combined cognitive conflict with Augmented Reality technology. This study is a preliminary investigation within Plomp’s preliminary research model for instructional design, with data collected through interviews with 2 physics teachers and 3 students, as well as a four-tier multiple-choice diagnostic test administered to 31 twelfth-grade students in Phase F at MAN 3 in Padang. The analysis results indicate that 69.7% of students held misconceptions, while the instructional materials used were still dominated by printed textbooks and worksheets and did not support concept visualization or the remediation of misconceptions. These findings underscore the need to develop e-modules based on cognitive conflict and a deep learning approach that align with the needs of teachers and students, while also contributing to the development of digital physics instructional materials capable of visualizing abstract concepts and supporting the remediation of misconceptions more effectively.
Analisis Gugus Fungsi Terhadap Perbandingan Metode Pencampuran dan Metode Pengolesan  Bakteri E.Coli Pada Aspal Stefi Monika; Ratnawulan
Journal of Science, Technology, and Innovation Vol 1 No 3 (2026): : April: Inventa: Journal of Science, Technology, and Innovation
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/xx88v465

Abstract

This study investigated the functional group transformation of asphalt modified using Escherichia coli through mixing and coating methods as a biological self-healing approach for pavement materials. The experimental research was conducted under controlled laboratory conditions using Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope (SEM), and hydrophobicity analysis to evaluate chemical, morphological, and surface performance changes. The mixing method promoted dominant internal interactions within the asphalt matrix, indicated by increased O–H functional groups and homogeneous bacterial distribution. In contrast, the coating method generated stronger surface reactions characterized by higher C–O intensity, enhanced biomineralization activity, and localized CaCO3 formation on the asphalt surface. SEM observations revealed that the coating method formed denser biofilm structures, contributing to improved hydrophobicity and accelerated microcrack healing performance. Comparative analysis demonstrated that bacterial application mechanisms significantly influenced asphalt chemical evolution and engineering behavior. The findings indicate that biologically modified asphalt using Escherichia coli possesses considerable potential for sustainable, adaptive, and self-healing pavement systems through optimized bacterial treatment strategies.
Co-Authors - Hamdi Abdul Aziz Adilla, Rika Afrilla, Sonya Ahmad Fauzi Ahmad Fauzi Ahmad Fauzi aisyah fadillah Akmam Akmam Al Naim, A. F. Aljuiswan, Fernanda Almunazar, Fauziyah Amelia Roza Haqu Amirullah, Fajar Fikri Anisa Janna Anisa Surya Annisa Kurniawati Aria Ulfa Aris Alfikri Arni Sopianti Asri Devialita Asrizal Asrizal - Betty Mizarwan Bizar al furqan Dafri Zaldi Dani Gustaman Syarif Dea Stivani Suherman Delianis Pringgenis Desnita Desti Yuspita Sari Deswita, Pipi Devana Dhiya Purnama Sari, Salsabila Dian Septiana Dila Juliawati Dilla, Gevi Mariyan Dinda Pratiwi Djusmaini Djamas Doni, Rahma Dwi Putri Ramadhani Dwi Yulia Elvira Diana. S Emiliannur Emiliannur Emiliannur Ernita Susanti Ernmaniati Ramli Etri Alga Vrimesty Fadhila Ulfa Jhora Fadli M Fanny Rahmatina Rahim Faridah Lisa Supian Fatni Mufid Fatni Mufit Fatni Mufit Fauzi Ahmad Muda Fauziah Ulmi Fauziah, Dary Nasmi Fauziyah, Faadhilah Febriona, Fhica Febriya, Dhea Feby Eriza Tanjung Fitratul Ilahiyah Fitri, Hidayatul Forni, Francesca Fran Surya Andi Fuad Sofaturahman Gusnedi Gusnedi Gusnedi Gusnedi Gusnedi Gusnedi Gusnedi, - Gusriandi, Dedi Gustaman Syarif Gusti, Dian Arima Gustika Yonanda Hamdi Rifai Hardina, Yuli Harman Amir Hayyu Yumna Hidayat, Zaitul Hidayati Hidayati Hidayati Hidayati Hidayatul Lisma, Rahmi Hosman, N. J. Hufri Hufri I Made Arnawa Idam Arif Ilahi, Fitratul Indah Yoseva Effendi Intan Purnama Yani Intan Purnama Yani Ipal Ipal Irna Humairah Ismira, Ismira Izzati Salsabilla Madina Jasmine, Alifa Jhora, Fadhila Kesya Yumna Salsabila Kharisma Marta Judenta Korry Nilyani Lailatul Rahmi Lathifa Zonesya Putri Leni Aziyus Fitri Letmi Dwiridal Letmi Dwiridal Lia Rifka Septiana M Ilham M. Bayu Ihsan Maharani Erika Putri Maharani, M mairesma ires Maritza Syalsabilla Masril Masril Mayasari, Tantri Mira Syuriyani Mohd Azmi, M. S. Muhammad Ridwan Azizi Mutiara Kusuma Febriwanti nabila aulia rahma Nabilah Ikrimah Ayani Nadia Raisa Aryani Najmiatul Fajri Naspin, Desi Ariyanti Nessa Aqila Nofi Yendri Sudiar Novella Febriana Nur Azizah Nurhabibah Nasution Nurhayati Nurhayati PAT, Anggi Angelina PAT Angelina Putri Dwi Sundari Putri, Sri Fany Mulya Rahima Syabrina Sarmi Rahmad Efendi Rahmat Hidayat Rahmat Hidayat Rahmat Hidayat Raisa, Nadia Ramadhani, Dinda Ramli Ramli Renol Afrizon Renold Fernanda Retna Junia Rifka, Lia Riri Camara Putri Riri Jonuarti Riri Jonuarti Riri Yandari Rita Iranie Riyasni, Selma rizka fauziah Rizki Fernanda Rosa Ayuni Utami Rosi Selfia Putri Saiful Rahman Santika, Viera Alvio Saputri, Ririn Hustia Sarimai Sarimai Sarmi, Rahima Syabrina Septia, Zahwa Silvi Yulia Sari Sinthia Dwi Jayanti Sisi Gusti Putri Sofaturrohman, Fuad Stefi Monika Suherman, Dea Stivani Sumanti, Syahputri Supian, F. L. Syafri Syafri Syafriani Syafriani Syafriani Syafriani, - Syahputra , Ilham Syakbaniah Syakbaniah Syalsabilla, Maritza Syuriyani, Mira Tasmiyatul Iffah Tho, S. W. Triana Dwi Restika Trisia Meidini, Ella Ulfa Jhora, Fadhilla Ulfa Jhora, Fadila Urwatil Wuskha Usmeldi Usmeldi Utama, Fajar Darma Vauzia, Vauzia Vebiola, Velani Veni Wahyuni Veni Wahyuni Vonny Tinedi Wardatul Ullya Wedy, Zahra Salsabila Witriani Marvinatur Ihsan Wong, Y. Y. Yanna, Fitri Yanti, Mery Silvia Yedho Syahadha Yenni Darvina Yola sri Wahyuni Yolla Octriany Yulia Maulida Yuliani, Kurnia Dwi Yulianti, Lastri Yuliza Noerman, Kiki Yulkifli Yulkifli Yurnetti Yurnetti Zaitul Hidayat Zaturrahmi Zaturrahmi Zoni, Muhammad Ari Zulhendra Zulhendra Zulhendri Kamus