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All Journal BERKALA FISIKA Sainstek SEMIRATA 2015 Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Ilmiah Pendidikan Fisika Spektra: Jurnal Fisika dan Aplikasinya JURNAL EKSAKTA PENDIDIKAN (JEP) JURNAL PENDIDIKAN TAMBUSAI Jurnal Teori dan Aplikasi Fisika Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Pelita Eksakta Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Jurnal Humanities Pengabdian Kepada Masyarakat Jurnal Ilmiah Profesi Pendidikan Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika Pillar of Physics: Jurnal Berkala Ilmiah Fisika Journal of Comprehensive Science MASALIQ: Jurnal Pendidikan dan Sains Journal of Innovative Physics Teaching (JIPT) Journal of Climate Change Society Physics Learning and Education Journal of Experimental and Applied Physics
Yenni Darvina
Universias Negeri Padang
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Efektivitas Lembar Kerja Siswa Virtual Laboratory pada Materi Gerak Lengkung di Kelas X SMAN Hidayati Hidayati; Masril Masril; Yenni Darvina; Zara Zakiya
JURNAL EKSAKTA PENDIDIKAN (JEP) Vol 3 No 1 (2019): JEP : Jurnal Eksakta Pendidikan
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jep/vol3-iss1/320

Abstract

The purpose of this study was to determine the effectiveness of virtual laboratory worksheets on parabolic motion material and circular motion in class X of SMAN 5 Padang. To achieve the research objectives, quasi experiments were used and one group of pretest-posttest was research design. The population is students of class X MIPA at SMAN 5 Padang who are registered in the 2018/2019 Academic Year. Simple random sampling technique is used for sampling and obtained by class X MIPA 1 as a sample. The research data includes data on attitudes, knowledge and skills competencies. Attitude competency data is obtained through attitude assessment observation sheets, then described and analyzed in graphical form. Knowledge competency data was obtained through pretest and posttest. Skills competency data are obtained through performance assessment sheets. Knowledge and skills competency data were analyzed using correlated t-test. Based on data analysis, it can be concluded that virtual laboratory worksheets on parabolic motion material and circular motion are effectively used in learning which can be seen from increasing student learning competencies in aspects of knowledge and skills after using virtual laboratory worksheets. As well as attitudinal competence shows students have done a very good attitude during learning, marked by an increase in the average value of student attitudes at each meeting
PENERAPAN DISCOVERY LEARNING BERBANTUAN VIRTUAL LABORATORY UNTUK MENINGKATKAN KOMPETENSI FISIKA SISWA SMA Masril Masril; Hidayati Hidayati; Yenni Darvina
Jurnal Penelitian Pendidikan IPA Vol. 5 No. 1 (2019): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v5i1.160

Abstract

The purpose of this study is to determine the effect of implementation virtual labs  through discovery learning in senior high school. The population of the study was students of  SMAN 12 Padang and the sample was two classes with cluster random sampling technique. Students were divided into two groups: experimental and control group. The research instrument used for competency of attitude is observation sheet, for competence of knowledge is multiple choice and for skill competence using working assessment. Based on the results of the research, it can be concluded that for the three competencies shows the results that the experimental class is better than the control class.
STRUKTUR MIKRO DAN SIFAT MAGNETIK DARI LAPISAN TIPIS NANOKOMPOSIT Fe3O4/PVDF Ramli Ramli; Nidya Yulfriska; Yenni Darvina; Yulkifli Yulkifli; Edi Sanjaya; Ambran Hartono
Spektra: Jurnal Fisika dan Aplikasinya Vol 3 No 3 (2018): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 3 Issue 3, December 2018
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (425.056 KB)

Abstract

Artikel ini berhubungan dengan laporan pembuatan lapisan tipis nanokomposit Fe3O4/PVDF (Poly Vinylidine Fluoride) dengan fraksi berat nanopartikel Fe3O4 yang berbeda. Nanokomposit Fe3O4/PVDF disiapkan menggunakan metode sol-gel dan kemudian ditumbuhkan menggunakan alat spin coating di atas substrat kaca. Lapisan tipis nanokomposit Fe3O4/PVDF dikarakterisasi menggunakan XRD, FTIR, SEM, dan VSM untuk menentukan struktur mikro dan sifat magnetiknya. Fraksi berat nanopartikel Fe3O4 dalam matriks PVDF berpengaruh pada struktur mikro dan sifat magnetik nanokomposit. Hasil karakterisasi XRD dan FTIR menunjukkan bahwa nanokomposit telah terbentuk dan telah terjadi interaksi antara pengisi (Fe3O4) dengan molekul polimer PVDF. Morfologi permukaan nanokomposit memperlihatkan bentuk sperulus (spherulites) dan lamela radial. Analisis kurva histeresis dari nanokomposit Fe3O4/PVDF menunjukkan magnetisasi saturasi dari lapisan nanokomposit Fe3O4/PVDF bertambah dengan bertambahnya konsentrasi Fe3O4 dalam sampel. Pengaruh fraksi Fe3O4 dalam sampel nanokomposit Fe3O4/PVDF terhadap sifat struktur mikro dan sifat magnetik sampel dilaporkan secara rinci dalam artikel ini.
THE EFFECT FROM APPLICATION OF STUDENT WORKSHEET BASED ON PROBLEM SOLVING IN ACHIEVING STUDENT'S CRITICAL THINKING SKILLS ON KINETIC THEORY OF GASES AND THERMODYNAMICS Ade Aprilia; Yenni Darvina; Murtiani Murtiani; Wahyuni Satria Dewi
PILLAR OF PHYSICS EDUCATION Vol 15, No 1 (2022)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/12681171074

Abstract

The context of this research begins from learning that is still centered on teachers and students who are still difficult to solve high-level problems that can d evelop 21st century skills. One of the solution to researchers can help students in mastering the skills is using learning media the form of student worksheet based on problem solving. Therefore, this study aims to determine the effect of applying student worksheet based on problem solving for student’s critical thinking skills in kinetic theory of gases and thermodynamics. This type of research is quasi experimental research and use posttest only control design. This research involved two sample classes, namely experimental class and control class, with different learning patterns and student worksheets. The research tool is the final test of the essay questions. The assessment is based on indicators of critical thinking skills and descriptive data analysis techniques. Based on the data analysis completed, student’s' critical thinking skills improved after applying student worksheet based on problem solving during their learning. The data analysis results show that the value of tcount>ttable (3.78>2.00) indicates that there is a difference at a significance level of 0.05, with dk=n1+n2-1 as degrees of freedom. Therefore, it can be concluded that the application of student worksheet based on problem solving affects student’s acquisition of critical thinking skills in kinetic theory of gases and thermodynamics
IDENTIFICATION OF PHYSICS CONCEPTS PROBLEM IN ANSWERING THE NATIONAL EXAM QUESTIONS AT SENIOR HIGH SCHOOL IN PESISIR SELATAN DISTRICT Innes Andriani; Silvi Yulia Sari; Yenni Darvina; Gusnedi Gusnedi
PILLAR OF PHYSICS EDUCATION Vol 15, No 1 (2022)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/12103171074

Abstract

The 21st century is a century with education system that refers to 2013 curriculum which requires teachers to apply learning that is directed at finding out information so that it can help students to have deeper mastery of concepts. The low value of the National Exam (NE) proves that many students have difficulty in working on questions. Therefore, research was carried out to identify problematic physics concepts on NE questions at Senior High School (SMAN) in Pesisir Selatan District. This research is descriptive research with qualitative approach. Population of data in this study was all SMAN that held the NE in Pesisir Selatan District which consisted of 21 schools. Sampling was carried out using Proportionate Stratified Random Sampling technique. The sample of this study was 6 schools that held the NE in SMAN in Pesisir Selatan District. The data in this study were taken from 2018 and 2019 Physics NE data at SMAN in Pesisir Selatan District in education center data (2018) with data collection techniques through documentation studies. Based on this data, it can be obtained the results of identification of problematic physics concepts on NE questions in 2018 with percentage of errors in 6 main materials including Measurement and Kinematics 58.68%; Dynamics 69.33%; Work, Energy and Collision 64.79%; Heat 57.74%; Wave and Light 65.95%; and Magnetism and Core Physics 45.45%. Then, in 2019 it consisted of 4 main materials including Mechanics 58.16%; Wave and Optics 65.87%; Thermodynamics 68.23%; and Magnetism and Modern Physics 57.90%.
Effect of The Volume of Banana Fiber As A Polymer Composite Amplifier With Polyester Resin Matrix On The Sound Absorption of Acoustic Materials rizka fauziah; - Ramli; Yenni Darvina; - Ratnawulan
PILLAR OF PHYSICS Vol 15, No 1 (2022)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/12561171074

Abstract

Research has been carried out on the banana fiber effect as a polymer composite amplifier with polyester resin matrix on the sound absorption of acoustic materials. Sound Absorber material is made with a variation in the volume of banana fiber that is different from polyester resin. The volume of banana fiber  and polyester resin used  is  15% Fiber:    85%  Polyester Resin,  20%  Fiber:  80%  Polyester Resin, 25% Fiber: 25%  Fiber:    75%   Resin Polyester, 30%  Fiber:    70%  Polyester Resin, 35%  Fiber:    65%  Polyester Resin. So when made composite then the amount of banana fiber used and polyester resin is 100%. Research methods are carried out in the collection of banana fiber, composite manufacturing and testing of sound absorption properties using impedance tubes. The testing of coefficient sound reflection and also sound absorbance coefficient testing is done using sound level meter and signal generator by reference to principle the method of tube impedance via approach to the acoustic box. The banana fiber composite result and polyester resin are able to reflect the sound of highest which is 0.44 in a frequency 500 Hz with fiber 15%. While lowest sound reflection coefficient is 0.06 at a frequency of 8000 Hz and fiber 35%. While in the test the highest value absorbance coefficient that absorbs sound  is  =  0.94 at fiber volume  35%,  and frequency 8000 Hz, while the lowest sound coefficient is 0.56 in fiber 15% and frequency 500 HZ
The Effect of Comparison of Polypropylene Plastic Waste Composition and Paper Sludge On Fiber Reinforced Composite Panels of Sugarcane Bags on Mechanical Properties Ismathul Dinny; Yenni Darvina
PILLAR OF PHYSICS Vol 15, No 1 (2022)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/12516171074

Abstract

Indonesia's landfills contain 15% of plastic waste. Of the total plastic waste, some are recycled and stored in the TPA. The remaining unmanaged will be wasted into the environment. Therefore, it is necessary to utilize waste so that it does not damage the environment, for example the use of waste into composite boards. Composite board made from polypropylene plastic wastepaper sludge and bagasse fiber. This study aims to see the effect of the composition of polypropylene plastic waste and the effect of paper sludge composition on the mechanical properties of composite panels. Composites are made using the hand lay-up method. The compositions used varied, namely 60% polypropylene plastic waste: 40% paper sludge, 50% polypropylene plastic waste: 50% paper sludge, 40% polypropylene plastic waste: 60% paper sludge with 2% bagasse fiber. Based on the results of research on the composition of polypropylene plastic waste of 60% and paper sludge composition of 40%, the highest tensile strength, compressive strength and hardness values were 11.86 N/mm2, 21.54 MPa and 6.33 HV. And the composition of plastic waste polypropylene by 40% and composition of paper sludge by 60% obtained the lowest tensile strength, compressive strength and hardness of 1.23 N/mm2, 9.77 MPa and 4.53 HV. From this study, it can be concluded that if the composition of polypropylene plastic waste is used more and more and the composition of paper sludge used is less, the value of mechanical properties will be higher. The value of the mechanical properties produced has met SNI
The Effect of Variations of Bagasse Sugarcane Fiber Composition with Plastic/Polypropylene Waste Matrix and Paper Sludge Filler on Acoustic Testing on Composite Panels Kasih Syirpia; - Hidayati; Yenni Darvina; Riri Jonuarti
PILLAR OF PHYSICS Vol 15, No 1 (2022)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/12136171074

Abstract

Noise can affect a person's health and comfort. Noise can cause mood disorders, anxiety, and stress. One of the efforts to control noise is the selection of acoustic materials. The utilization of these materials can use as panels that can muffle sound, thereby reducing noise.  In this study, bagasse fiber, polypropylene plastic waste, and paper sludge were used as materials in the manufacturing of composite panels. The method used is the impedance tube method. The greaterzthe sound absorption coefficient, the betterethe material is used as a sound dampening material. In this study, the composition of polypropylene plastic and paper sludge was 40:60, and variations in fiber composition of 0%,1%,2%,3% of the total weight of the composite panel. The bagasse fiber used is a fiber that has been alkalized to a good mechanical interlocking between the fiber and the matrix.Based on the results, the highestasound absorptionrcoefficienteis 0.98 atea frequency of 8000 Hzsfor a 3% fiber composition. The lowest soundeabsorptionrcoefficient is 0.63 at arfrequency of 2000eHz, for a 0% fiber composition. The more fiber composition used in the composite panel, the higher the resulting sound absorption coefficient. More bagasse fibers can increase the pores and thickness of the composite panel so it can absorb the sound that passes through it. The greater the soundaabsorption coefficient, the better the materialeis used as sound material. All sample variations meet the standard requirements as noise materials in buildings, namely 0.15
META ANALYSIS OF THE EFFECT OF THE USE OF VIDEO ON STUDENT LEARNING OUTCOMES IN PHYSICS AND SCIENCE LESSONS Diffa Azilia; Yenni Darvina; . Desnita; . Murtiani; Rahmi Zulva
PILLAR OF PHYSICS EDUCATION Vol 15, No 2 (2022)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/12175171074

Abstract

Physics is a subject that examines the phenomena that exist in the universe. Not all of the physics and science materials studied can be visualized because not all of them are concrete. This makes it difficult for students to understand the physics and science material. The solution that fits this problem is to apply the use of video to the students' physics and science learning process. The application of video in learning is expected to be able to improve student learning outcomes. Research on the use of video has been done by many previous researchers. The results of this study indicate that there is a positive influence from the use of video on student learning outcomes.This research method uses a meta-analysis method by collecting 26 articles published in 2014-2021. The article consists of 24 national articles and 2 international articles. The selected articles are articles that can be obtained the effect size on the application of learning videos in physics and science lessons. The effect size value obtained is then grouped into three indicators, namely based on education level, research area, and learning model.Based on this research, it can be concluded that: (1) Effect size on the effect of using video based on indicators of education level, obtained very high criteria for junior high school level, (2) Effect size on the effect of using video when compared based on the indicators of the research area, obtained high criteria for the South Sulawesi region, (3) Effect size on the effect of using video when compared based on the learning model, obtpained high criteria for the Creative Problem Solving learning model.
META ANALYSIS OF THE EFFECT OF THE USE OF MODULE ON STUDENTS' CRITICAL THINKING ABILITY IN PHYSICS AND SCIENCE COURSES Hasya Syahmi; Yenni Darvina; . Desnita; . Murtiani
PILLAR OF PHYSICS EDUCATION Vol 15, No 2 (2022)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/12168171074

Abstract

The twenty-first century is evolving at an incredible rate.. The development of information and communication technology in all aspect of life, including in the learning process has entered the modern era. The ablility to think critically and solve problems skill (problem solving skill) are important skills for surviving in the twenty-first century. The real condition found in the field were that students' critical thinking skills are relatively low during the teaching and learning process. One solution to overcoming this problem is to use learning media  namely in the form of modules. Then, it is necessary to have further research on the Module. Meta-analysis is the term for this type of study. Researchers undertake meta-analysis by synthesizing research data, examining, and analyzing research data from a number of previously published studies. Conducting a literature review, gathering data, studying and assessing papers, analyzing and interpreting articles, and producing report results are all steps in meta-analysis. The necessary statistical data must be included in the article, according to the standard. From the data analysis carried out, it can be stated three results of this research. First, the use of the module has a significant effect on the senior high school level compared with an average effect of 0.931 to junior high school level. Second, the use of the module has a significant effect on the Newton’s Gravity material with an average effect of 3.742. Third, the use of the module has a significant effect by using a Contextual Teaching and Learning Model and saintific approach. 
Co-Authors - Afrizal - Rahmi - Ramli - Ramli - Syakbaniah - Yulkifli - Yulkifli Abdul Azis Abdul Aziz Ade Aprilia Ade Usra Berli Afdatul Zikri Ahmad Fauzi Aifah Fauziah Akmam Akmam Alif Yulanda Putri Almunazar, Fauziyah Alqadri, Dheo Alwi Nofriandi Amali Putra Ambran Hartono amira tiara wulandari Andari Oktafiani Anisa Meysi Wardi Annisa Febriani, Annisa Anofa Liona Anwar, Suci Aprilia Cahaya Ari Arfandi arifaldi arifaldi Asfaha, Auzha Hira Asrad Hafizah Asrizal Asrizal Asrizal Atika Dwi Maharani Zuler Audia, Washilla Aulia, Mhd Reyfanza Aulia Azca Aryadiva Mahengga Azura Carolina Harsani Azzahra, Zakia Bella Salsa Bella Sukma Putri Chairunnas Chairunnas Cici Ramayanti Dara Putri Pratama Desnita Desra Yarsina Dicko Maulana Syahdan Diffa Azilia Dila Alhumaira Dola Afriyenti Edi Sanjaya Elsa Imelda Elsa Okta Memori Elsa Rahmayuni everly aberta Fadhila Ulfa Jhora Fadilla Septiani Fadillah Ulfah Fakhrur Rhozy Fani, Meylin Sir Fanny Rahmatina Rahim Fatni Mufit Fatni Mutfit Fauziyah, Faadhilah Febrian Syah Febrian, Nanda Festiyed Fio Adella Illahi Firda Annisa Fitrah Ayu fitri rahmi Fitria Murti Fran Surya Andi Fredy Pratama Frima Suci Agustia Fuja Novitra Gina Fadilah NST Gusnedi Gusnedi Gusnedi Gusnedi Gusnedi, - Gustika Yonanda Hamdi Rifai Hardina, Yuli Harman Amir Hasya Syahmi Hazrati Ashel Hersha Hanifa Hidayati Hidayati Hidayati Hidayati Hidayati Hidayati Hifzi, Zudiya Hilmi Rizki Anjani Hrp, Abdul Maulub Hufri Hufri Ihsania Ikrima Kinanti Ilahi, Fitratul Indah Safira Indah Septia Ningsih Indah Tri Handini Indri Syukra Innes Andriani Iryani Iryani Ismathul Dinny Jasmine, Alifa Jhora, Fadhila Jhora, Fadhila Ulfa Jhora, Fadhilla Ulfa Kasih Syirpia Khairunnisa Khairunnisa Kuwat Triyana Lestra, Dila Ayu Letmi Dwiridal Lidya Agraini Lucya Sinurat Lusi Oktavia Masril Masril Masril Masril Masril Masril Masril Masril masril masril Melani Alvino Miftahurrahmah Miftahurrahmah, Miftahurrahmah Muhammad Ikmal Muhammad Rivai Murtiani Murtiani Murtiani Murtiani Mustika, Dian Putri mutia faizah apriani Mutia Risma Mutia Yussavel Navis Nabila, Aliya Nadia Ardianti Nadia Ramadhanty Nadila Putri Bungsu Nadya Aztifa Nadya Yunestika Nawiyah, Nawiyah Nazifah, Naurah Nia Nursurila Nidya Yulfriska Nidya Yulfriska Novelia Prima Nur Anisa Nur Sahfitri Nurhasanah Nurhasanah Nurhijjah Tiur S Nurmala Sari Lubis Oktavia, Vini Onny Gustira Pakhrur Razi Pertama, Indri Saputri Pratama, Rayvol Dion Pratiwi Mailisa Prima Nora Ananda Puput Mulya Sari Pusri Mela Putra Adil Putra, Amali Putri Diana Putri Dwi Sundari Putri Rasti Ramadhani Radha Firaina Rahma Tilla Dwi Lestari Rahma Yeni Rahmadini, Fadhilla Rahmat Hidayat Rahmat Hidayat Rahmi Zulva Ramadhani, Dinda Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli Ramli, - Rara Nur Rida M.Y Ratnawulan . Renol Afrizon Resti Novela Retna Junia Revi Febrina Sari Ria Monica Rifi Wasrika Rima Melani Putri Rio Anshari Riolin Putri Artiwi Riri Jonuarti Riri Raihannil Jannah Riyasni, Selma rizka fauziah Rizki Rizki Romizah Marta Salma Amalia As Shidiq Santika, Viera Alvio Sari, Mona Berlian Septia, Zahwa Setivawani, Andrisa Shinta Kumala Silmi Hidayatullah03 Silvi Trisna Silvi Yulia Sari Siti Riva Darwata Slivi Yulia Sari Solly Aryza Sonia Nur Riza Sovia Yulianti Srisa Oktaweri Suci Wahyuni Suherman, Dea Stivani Suryani Fadhilah Syafri, Syafri Syafriani - - Syafriani Syafriani Syafriani Syafriani Syafriani Syafriani Syafrinaldi Syafrinaldi Syahputra , Ilham Syair Nandi Tiwi Novalia Syahari Tri Agunaisy Tria Sukma Sandi Trio Junira Fernando Ulfa Jhora, Fadhila Ulfa Jhora, Fadhilla Ully Nuraidina Ummiatul Fitri Vanessa Febta Sindani Varadila Sahanaya wahyu dilla abdullah Wahyudil Hayat wahyuni hafnisyah Wahyuni Satria Dewi Widara, Rofifah Windri Suci Gaitari Yeni Mustika Sari Yogi Putra Yohandri Yohandri Bow Yolvi Oktaviani Yona Sri Mantia Yosi Febriani Yudha, Fauzan Syafril Yulhendri Yulhendri Yulia Febrina Yulia Sari, Silvi Yulkifi Yulkifi Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli, Y Yunita Ela Saputri Yuri Yanti Yurnetti Yurnetti Yurnetti Yurnetti Yurnetti, Yurnetti Zakiya, Zara Zara Zakiya Zoni, Muhammad Ari Zulhendri Kamus Zulma, Degito