Hasil Belajar Kognitif Siswa Melalui Model Problem Based Learning Berbantuan …

Cognitive learning outcomes are one of the aspects obtained in the learning process. To find out the knowledge of students, cognitive ability tests were carried out. The purpose of this study is to determine the increase in students' cognitive learning outcomes and to determine the differences in cognitive learning outcomes of students who study using a PhET-assisted problem based learning mode…

Penerapan Model Pembelajaran Kooperatif Tipe Role Playing Pada Materi Tata Su…

This study aims to describe students' conceptual understanding and determine the improvement of students' conceptual understanding by applying a role playing type of cooperative learning model. The type of research used is Quasi Experimental, with a Nonequivalent Control Group Design. The subjects of this study were students of class VII MTs N 1 Padangsidimpuan, which consisted of 60 stude…

Pengaruh Kecepatan Putaran Tabung Ball Milling Terhadap Komposisi Morfologi D…

The speed of ball milling vial affects the magnetic properties of its product. Research on the composition, morphology and magnetic properties of natural sand particles from Rokan River as a function of the vial speed . The sample of natural sand is available in magnetic labolatory with a mass of 10 Kg and then dried under the sun ray before the separation process between magnetic and nonma…

Pengembangan Media Pembelajaran Berbasis Aplikasi Android Dengan Pendekatan I…

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Implementasi Pembelajaran Menggunakan Model Kooperatif Tipe Stad Berbantuan M…

One of the problems that exist in the world of education is the low cognitive learning outcomes of students. Based on the facts in the field, students' cognitive learning outcomes are low due to several factors including the use of inappropriate learning models and media so that the learning atmosphere feels boring and causes students' learning motivation to become lower which also affects stud…

Pengembangan E-Module Berbasis Kontekstual Menggunakan Aplikasi Exe Learning …

The problems faced today by both teachers and students in learning physics include: the lack of variations in the teacher's teaching methods in delivering material to students, the low motivation of students to learn physics and the lack of media used by teachers in delivering the material. From the problems above, the researchers tried to provide a solution, namely by developing contextual-bas…

Elektroda Karbon Dari Biomassa Kulit Salak Pondoh Dengan Variasi Aktivator Ki…

Supercapacitor is a renewable energy storage device that has a very large power density and charge storage capacity. The main components of a supercapacitor are electrodes, electrolyte, current collector and separator. In this research, carbon electrodes were made from shell biomass of salak pondoh with various chemical activators with respective sample codes, namely KS-ZnCl2, KS-KOH and KS…

Fabrikasi Elektroda Karbon Dari Biomassa Tempurung Kemiri Dengan Variasi Suhu…

Utilization of waste biomass into an economical, high-performance energy storage device has become the focus of research in the fields of science and technology. The high cost of production and the low storage capacity of supercapacitors are one of the obstacles in the development of supercapacitors. In this study, supercapacitor electrodes were synthesized from candlenut shell biomass as a…

Model Pembentukan Fenomena Layangan Pada Gelombang Dua Dimensi

Two-dimensional waves with irreguler shapes if given two vibratios with slightly differrent frequencies at any point will cause a beat phenomenon. This study aims to model a beat of a two-dimensional wave caused by 2 vibration sources that differ slightly in frequency and based on the given domain pattern. The beat was modeled using 2 frequencies in each domain. The first frequency is 150 H…

Interaksi Medan Magnet Terhadap Ion Di Dalam Aliran Larutan Natrium Clorida (…

The interaction of magnetic fields with ions in the flow of NaCl solution has been determined. The value of pressure and flow velocity was determined based on Bernoulli's law formula. The results of the test with two experiments, namely the first experiment with a container height of 1 meter and the second experiment with a container height of 1.5 meters show the potential difference and re…

Sintesis Dan Karakterisasi Nanopartikel Zno Menggunakan Ekstrak Daun Sirsak S…

The rapid development of the textile industry can increase the production of waste produced such as dye wastes. Methylene blue is the most widely used dye in the industry and is harmful to live organisms and the environment due to its resistance to degradation. This study aims to synthesize and characterize ZnO nanoparticles photocatalyst using Annona muricata L. leaf extract as a bioreduct…

Penentuan Sifat Magnetik Dan Morfologi Nanopartikel Oksida Besi Pasir Alam Lo…

The purpose of this study is to determine the magnetic properties and morphology of iron oxide nanoparticles of natural sand collected form Logas Village, Kuantan Singingi Regency, which was doped with nickel. Natural sand samples were separated between magnetic and non-magnetic particles using a strong magnet Neodymium Iron Boron (NdFeB), the result of the separation is called the NdFeB p…

Interpretasi Potensi Air Bawah Tanah Dengan Menggunakan Metode Geolistrik Atu…

Increased population growth and development in the Pebatuan Village area where the availability of groundwater is not evenly distributed in each area. This research aims to determine the depth of groundwater and groundwater quality. Measurements using the Schlumberger configuration geoelectric method on two tracks, with the length of each track 100 m. Based on the results of data processin…

Penentuan Distribusi Dan Kualitas Air Bawah Tanah Dengan Menggunakan Metode G…

The distribution and quality of groundwater have been determined in Kualu Village, Tambang District, Kampar Regency. Underground water in research area has the potential for polluted water due to waste from septic tanks and solid waste from the housing. The waste can affect the suitability of the water for consumption, therefore, it can affect the aquifer system. This study aims to analyze…

Prediksi Periode Curah Hujan Di Kota Pekanbaru Menggunakan Metode Fast Fourie…

Indonesia is a country with a tropical climate so the region has a fairly high rainfall. Pekanbaru City generally has a tropical climate with maximum air temperatures ranging from 34.1º C - 35.6º C and minimum temperatures between 20.2º C - 23.0º C. In this study, predictions of the rainfall period of Pekanbaru City were made from 2016-2020. This study used the Fast Fourier Transform m…

Interpretasi Kualitas Dan Kuantitas Air Bawah Tanah Menggunakan Metode Geolis…

Simpang Baru Village, Bina Widya District is an area that consists a lot of community housing. Community housing is one of the potential sources of domestic waste either in the from of liquid domestic waste from septic tanks, or solid aste from housing.the waste can infiltrate into the aquifer system, which can cause groundwater pollution. The method used in this research is a geoelectric …

Pengaruh Doping Tembaga Terhadap Parameter Loop Hysteresis Dan Komposisi Part…

The effect of copper doping on loop hysteresis parameters and elemental composition of iron oxide nanoparticles from Logas natural sand, Kuantan Singingi Regency, Riau Province prepared using ball milling has been investigated. Prior to ball milling process, this natural sand was processed using Iron Sand Separator (ISS) and Neodynium Iron Boron (NdFeB) magnets in order to separate between…

Pengaruh Doping Mangan Terhadap Sifat Magnetik Dan Morfologi Dari Nanopartike…

Magnetic and morphological properties of magnetic nanoparticles of natural sand from Sungai Suci Beach in Pondok Kelapa District, Bengkulu Province have been determined. The natural sand that has been extracted was processed using an Iron Sand Separator (ISS) then the product was milled using ball milling which separated between magnetic and non-magnetic minerals using magnet Neodymium Iron…

Pengaruh Suhu Karbonisasi Pada Karbon Aktif Yang Berasal Dari Limbah Kulit Be…

Electrodes are one of the supercapacitor components that can increase its specific capacitance. This studyaims to optimize the performance of supercapacitor cells using the carbon electrodes derived from jicama bean peel biomass waste by varying the carbonization temperature. The process of making carbon electrodes begins with preparation of activated carbon powder, followed by the precarbo…

Pengembangan Perangkat Pembelajaran E-Learning Menggunakan Chamilo Pada Mater…

One of the things that supports the success of the learning process is the presence of the right learning devices. Physics learning is usually monotonous with the presence of many formulas, so that students have difficulty in understanding the concept, as in equilibrium and rotational dynamics matter. The low understanding of physics concepts is also influenced by learning media that are not at…