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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 8 Documents
 1 
Search results for , issue "Vol 8, No 1 (2022)" : 8 Documents clear
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.
Classification of Diseases of Banana plant Fusarium Wilted Banana Leaf Using Support Vector Machine Yus Rama Denny; Endi Permata; Lusiani Dewi Assaat
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.v8i1.15893

Abstract

Fusarium wilt is an important disease of various types of bananas and one of the most common diseases that causes destruction of banana plants in tropical and subtropical regions. Fusarium wilt caused by the fungus Fusarium oxysporum f.sp. cubense (FOC). As an inhabitant, invader, soil-transmitted fungus and causes wilt that colonizes xylem vessels, FOC requires penetration through the roots of the host plant, so that in its control it is necessary to try to provide protection and induction of host resistance systems in the root system. in this research.The proposed banana plant disease detection system consists of two phases, in the first phase, namely in the learning process, the images of healthy banana leaves and those affected by fusarium disease are files each measuring 640x480 pixels obtained from the results of taking a digital microscope on the plantation. PT. GGP Lampung. Next is the classification process. The method used for pattern recognition in this study is a support vector machine (SVM). Basically SVM can only be used to classify data into two classes (binary classification). To be able to apply to the problem of classifying healthy banana leaves and those affected by mild, moderate and severe fusarium disease consisting of more than two classes, a multiclass SVM classification method is applied which is built by combining several binary classifications. In the training classification process, the hyperplane variables for each classifier obtained will be stored and will later be used as data for each classifier in the testing process, in other words the training classification process is a process to find support vectors, alpha and bias from the training input data obtained. in the form of a feature vector from the image of healthy banana leaves and those with mild, moderate and severe fusarium disease (four classes). From the results of the classification stage experiment using the support vector machine one against all method, the results obtained are Class I (Healthy Banana Leaf) 90.833%, Class II (Light Fusarium Banana Leaf) 76.688%, Class III (Medium Fusarium Banana Leaf) 77.50, Class III (Medium Fusarium Banana Leaf) IV(Fusarium banana leaf weight) 95%.
The Implementation of Problem-Based Learning Models using Google Sites to Improve Students’ Problem Solving Skills on the Topic of Electrical Safety System Fathiah Damri Said; Yus Rama Denny; Asep Hidayat
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.v8i1.17194

Abstract

This study aims to obtain an overview of the effectiveness of the application of problem-based learning models assisted by google sites to improve students' problem solving skills on direct current electricity topic, especially electrical safety system subtopic. Pre-experiment method with one group pretest-posttest design was conducted in this study. The research subjects consisted of 31 students of 12th grade science in the first semester of the 2022/2023 academic year at a public high school at Tangerang regency. The research instruments consisted of 2 structured questions for the problem solving ability test where each question contained indicators of targeted problem solving skills, namely: identifying problems, describing problems with physics quantities, plan the solutions, execute the solutions, and evaluating the resultsof problem solving. This study was conducted in three stages: 1) the preliminary study includes literature review, field study, developing google sites for learning purpose, preparing the lesson plans and the problem-solving worksheets, and developing the instrument tests; 2) the implementation stage includes the implementation of PBL in the classroom; 3) the final stage includes analyzing data and presenting the results of the study. According to the data, it can be concluded that the application of the PBL model in learning the topic of electrical safety systems can improve students' problem solving skills, indicated by the average N-gain score of students' problem solving skills of 0.91 with the category of improvement is high.
Analysis of Students’ Concept Mastery Profile on Direct Current Electricity Topic (Case Study of SMAN 2 Kabupaten Tangerang) Fathiah Damri Said
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.v8i1.17193

Abstract

Seldom do the the assessment results used as information in didactic analysis to improve the learning process. This study aims to develop ways of delivering the concept of direct current electricity based on the results of the analysis of students' mastery of physics concepts. Descriptive research was conducted on students in a public high schools in Tangerang. The results denoted that the concept mastery of electrical resistivity of materials and electrical safety systems were categorized as low. Didactic analysiswas built contextually by integrating the physical phenomena of direct current electricity in technology and everyday life. This pilot study will provide information for further researches in an way to develop a didactic design in presenting the concept of direct current electricity.

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