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Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 2442515X     EISSN : 25281976     DOI : http://dx.doi.org/10.30870/gravity.vxix
Core Subject : Science, Education,
Astronomy Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics
The focuses of the manuscript received in the Gravity journal is limited to the topic: Physics Education (Media, Educational Policy, Assessment, Learning Model) Theoretical Physics Material Physics Earth and Environmental Physics Astrophysics Medical Physics Computational Physics and Instrumentation
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 208 Documents
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Pengembangan m-LKPD berbasis proyek berbantuan smart apps creator 3 untuk menstimulus keterampilan proses sains Kurniawan Saputra; Kartini Herlina; Feriansyah Sesunan
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 7, No 2 (2021)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v7i2.11548

Abstract

This research intends to develop m-LKPD (mobile lembar kerja peserta didik) based on a project assisted by smart apps creator 3 in the diffraction of light lesson validly and practically. m-LKPD develops to stimulate scientific processes skill as multimedia to support online learning in this Covid-19 pandemic. This research uses Design and Development Research (DDR), consisting of 4 stages: analysis, design, development, and evaluation. The instruments used in this research are interview guidelines, validation test questionnaire, practicality test questionnaire, teacher perception questionnaire, student response questionnaire, and assessment rubrics of scientific processes skill. The result of the validation test results 3,62, with a very valid category. The outcome of the practicality test is 90% as a percentage average, with a very practical as a category. The result of stimulating scientific processes skills through a small team test gets 88% as an average percentage with stimulated as a category. This shows that m-LKPD develops very valid and efficient ways to stimulate processes skills. Besides, m-LKPD creates the potential to be implemented in online learning and face-to-face learning, proven by students’ responses gaining 94% with very good as a category and teachers’ perceptions that achieve 96% average percentage with very good as a category. Therefore, the developed m-LKPD can be used as multimedia to support online learning in this Covid-19 pandemic. 
Analysis of model fit and item parameter of work and energy test using item response theory Yustiandi Yustiandi; Duden Saepuzaman
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 7, No 2 (2021)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v7i2.10563

Abstract

One of the important parts in assessing learning outcomes is using a good instrument that is analyzed using an appropriate analytical model and can measure students' abilities accurately. This study aims to determine the model fit and item parameter of work and energy test using item response theory. This research is a quantitative research that was carried out on the responses of 1177 high school students spread across Banten Province. The instrument is a set of work and energy tests consisting of 25 multiple choices. The data analysis used the item response theory approach with statistical methods ranging from determining the fit model to the item characteristics.. The analysis showed the students' responses to the fit energy and effort test with 9 items of 1 PL model, 17 items of 2 PL model, and 16 items of 3 PL model. Based on the percentage, the 2PL model is suitable than 1PL and 3PL. Further analysis determines the item parameter value by referring to the 2PL model, namely the item parameter difficulty level (b) and discrimination (a). The result shows that all items have difficulty in the range of 2.501 to 1.595, and the discrimination was in the range of 0.289 to 1.109. Based on this analysis, it can be concluded that all items in this test are the good item criteria 
Pengembangan Media Pembelajaran Animasi Powerpoint Pada Pokok Bahasan Kalor Devi Nanda Efendi; Bambang Supriadi; Lailatul Nuraini
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 7, No 2 (2021)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v7i2.10820

Abstract

During the Covid-19 Pandemic, teachers were be required to do online learning. Students have difficulty understanding the material provided in the online learning process, so this research aims to produce PowerPoint animation-based learning media and the effectiveness of using PowerPoint animation learning media. The research method used was Research & Development with the ADDIE research design. The research subjects consisted of 32 students of class XI MIPA 1 at SMA Negeri 1 Tanggul. From the validation provided by 2 media experts, validator and user validators (teachers), the PowerPoint animation media was declared incredibly valid with an average confirmation of 3,94. The effectiveness of PowerPoint animation media on student learning outcomes after using the PowerPoint animation learning media states that student learning outcomes increase. The increase in student learning outcomes (n-gain) was 70.69 using the average category of media effectiveness analysis. The study results stated that the PowerPoint animation learning media is feasible to apply in the learning process. Using PowerPoint animation learning media can improve student learning outcomes on heat material. 
The different approaches between Kepler and Newton in determining the force laws Oktarisa, Yuvita
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 7, No 2 (2021)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v7i2.13085

Abstract

One of Kepler’s most significant contributions to science was finding planetary motion laws, which is the foundation of celestial mechanincs. Kepler’s laws of planetary motion were not merely guesswork. He tried to apply his understanding of the relationship between force and distance to explain his planetary laws’ physical reason. However, there is usually no akcnowledgement in introductory physics textbook to the topic of Kepler’s laws regarding how Kepler tried to explain his planetary laws. Most of the introductory physics textbooks only give Newton’s description explaianing Kepler’s laws of planetary motion. This paper describes different approaches between Kepler and Newton in determining the force law and discusses some of its pedagogical implications. 
Development of physic learning video properties of light with colaboration teacher and student as learning media in new normal era Fita Permata Sari; Dee Dee Mahmood; Salamun Hadi Subroto; Puji Iman Nursuhud; Herry Prasetyo
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 8, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v8i1.11584

Abstract

The era of digital technology is very influential on education in the new normal era covid-19 pandemic. The making of physics learning videos can be applied with the collaboration of teachers and students. This research aims to produce the physic learning video properties of light with teacher and student as learning media in new normal era. This Research and Development (R & D) began with preliminary research, research design, developing initial products, limited test trials, revision of limited trials, initial field trials, and revision of initial field trials. The research was applied to 8th grade junior high school students while learning Science Physics Chapter of the Properties of Light. This research used instruments are questionnaires. The product is in a good category so that it is feasible to be used and implemented in the physics science learning process in the new normal era.
Teaching oscillations and waves during the COVID-19 pandemic using the flipped classroom Sariaman Siringo Ringo; Rahmadhani Mulvia
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 8, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v8i1.11591

Abstract

The COVID-19 pandemic has posed a major challenge to education systems around the world. Schools and universities were encouraged to eliminate or limit face-to-face learning activities to prevent the spread of COVID-19. In this present study, the flipped classroom model has been proposed as a solution to this challenge. The purpose of this research was to investigate the effect of the flipped classroom model on students’ cognitive learning outcomes in learning oscillations and waves. The learning achievement was measured by the Oscillations and Wave Achievement Test (OWAT) consisting of 15 items. This pre-experimental with a one-group pretest-posttest design was conducted at a small public school in Tanjung Jabung Barat, Jambi. A total of 27 junior high school students participated in this present research. The results of average normalized gain showed that the use of the flipped classroom model had a positive effect on students' cognitive learning outcomes in learning oscillations and waves.
Deriving and applying Newton’s PQRST formula with pre-service phyiscs teachers Yuvita Oktarisa; Ricardo Karam
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 8, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v8i1.14645

Abstract

One of Newton’s greatest scientific achievements was to show that Kepler’s first law follows from the assumption of an inverse-square central force. Despite its importance, this connection is rarely taught in physics courses at introductory level due to the mathematical complexities involved in the proof. A possible didactic solution to this problem is to focus on a conceptual understanding of Proposition VI of Newton’s Principia. In this paper, we report a study conducted with the goal of teaching pre-service physics teachers key aspects of Proporsition VI, as well as its application to determine the force law, given the orbit shape and the sun’s position. Our findings consist of students’ interpretations and difficulties when trying to understand Newton’s original reasoning.
Fabrication of Counter Electrode for Dye Sensitized Solar Cells Application Using Environmentally Friendly Graphene and Carbon Nanotubes Composite Materials Fatiatun Fatiatun; Nugroho Prasetya Adi
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 8, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v8i1.12028

Abstract

In this research, carbon nanotubes (CNTs) was composited with graphene for counter electrode (CE) in dye sensitized solar cells (DSSCs) application. CNTs used were derivated from waste of palm oil that were environmentally friendly. The composited graphene and CNTs were fabricated on fluorine tin oxide (FTO) substrates by spray coating method. The aims in this study to improve electrical conductivity of CE which graphene hybrided with CNTs. Graphene oxide (GO) with home-made triple-tails sodium 1,4-bis(neopentyloxy)-3-(neopentyloxycarbonyl)-1,4-dioxobutane-2-silphonate (TC14) surfactant (TC14-GO), reduced GO (TC14-rGO) and hybrid of TC14-rGO with CNTs (TC14 rGO-CNTs hybrid) were fabricated for CE in DSSCs application. Based on four-point probe measurement, the TC14 rGO-CNTs hybrid presented high electrical conductivity of ~6.8 x 10-1 S.cm-1. This consistent with solar simulator result that TC14 rGO-CNTs hybrid as CE sample showed high efficiency of 0.0132%.
Analysis of the needs basic physics teaching materials in industrial engineering major Diana Ayu Rostikawati; Asep Saefullah
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 8, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v8i1.14865

Abstract

This study aims to analyze the needs of students for basic physics teaching materials  in industrial engineering major. This study is an exploratory descriptive study with the subject of industrial engineering students who have taken basic physics courses. The sample used for this study was taken randomly with a total sample of 109 students. Data of study was obtained from filling out a questionnaire on the needs of teaching materials. The results of questionnaire analysis of the needs for teaching materials indicate that students want teaching materials that can make them active in learning, teaching materials whose contents begin with context in everyday life, can facilitate students to study in groups, and can improve skills in the world of work. As a follow-up to the results of questionnaire analysis, it is immediately necessary to develop basic physics teaching materials in industrial engineering major.
Profile of the understanding of pre-service physics teacher students on free body diagrams Yudi Guntara; Deni Aryati
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 8, No 2 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v8i1.15883

Abstract

This study aims to determine: (1) The ability of free diagram representation student objects on Newton's Law material (2) Student difficulties in represents a free-body diagram on Newton's Law material. The type of research that carried out is a mix method research. The research was conducted through written test activities and Interview. Test activities are used to obtain data on the ability to represent diagrams object-free, namely in the form of a free-body diagram. Interview activities are used to obtaining data on student difficulties in describing object-free diagrams in the form of a description of the results of the interview. The research subjects were students in the Department of Physics Education UNTIRTA and students majoring in Physics Education UNSIQ. The results showed that the student's object-free diagram representation ability included in the category of Needs Improvement (needs improvement). The most difficulty Many students experience in making free-body diagrams is determining the length of the vector forces acting on objects.

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