The purpose of using interactive powerpoint media is improving students' understanding of concepts. In the research that has been conducted involving 62 students of 11th natural science grade even semester of the academic year 2021/2022 at MAS PP Daarun Nahdhah Tawalib Bangkinang, Kab. Kampar, Prov. Riau. The first purpose of research is to describe students' conceptual understanding through th…
This study aims to determine the effect of applying PhET simulation with problem solving models on students' understanding of concepts. The type of research used is experimental research with a quasi-experimental design. The control group design is not equivalent to the Posttest only control group design model. The population in this study were all grade VII students of SMP Negeri 1 Katema…
Learning devices are tools or equipment that are used by teachers in carrying learning activities. The learning tools are needed so that learning does not feel monotonous and boring, and can increase the activity of students. The learning tool developed is a learning device based on the Learning Cycle 7E model on work and energy materials for class X senior high school, which consists of a Lear…
Science learning is often considered a difficult subject that is identical to complex formulas that make students less interested in the learning being taught. Students find it difficult to understand the material because the implementation of learning in the classroom is still monotonous and the supporting media are less attractive, this makes students feel bored and bored until finally ma…
The aim of this research is to describe the effectiveness of peer led guided inquiry model to improve students science process skils. The design used is quasiexperimental: posttest only control group design.The study participants were 66 students in 11th graders. Data were collected through the test. The data collection instrument was in the form of sound waves science process skills test w…
Understanding is one of the cognitive abilities that students must have to master physics concepts. A low understanding of the concept of physics is a problem that must be solved. The selection of the right learning approach and the use of interactive media when learning is expected to increase the understanding of students' concepts. This study aims to determine the effectiveness of learning b…
Physics is a science that has an important role in the world of education, because physics is a tool that can be used to shape students to think critically, logically, analytically and systematically. Activeness in learning physics lies in two aspects, namely active in action (hands activity) and active thinking (minds activity). In addition, students will be active if students can relate new k…
Understanding is the level of ability expected by someone in understanding the meaning of the concept. Understanding the concept is a very important part in the learning process. The purpose of this study is to find out that the application of the predict-observe explain (poe) learning model can be an alternative solution to improve students' understanding of physics concepts. This study uses a…
Pembelajaran fisika merupakan suatu proses penemuan yang didalamnya terdapat keterampilan-keterampilan dasar yang biasa digunakan para ilmuwan dalam bekerja secara ilmiah untuk memperoleh produk atau pengetahuan yang diharapkan. Salah satu materi yang penting dalam pembelajaran fisika adalah materi hukum Newton. Namun ditemukan ketidaksesuaian antara kompetensi dasar materi hukum newton yang me…
Students science process skills are aspects that must be trained through hands-on practicals. In fact, the lack of adequate practicum facilities in the physics laboratory causes students to rarely do practicums so that students' scientific process skills do not develop. Along with the rapid development of technology, there has been an innovation in the form of a virtual laboratory as an alterna…
Sunlight can be used for the development of solar power plants (PLTS). The photovoltaic (PV) module is the main component of PLTS which can convert sunlight into electrical energy. The efficiency of the PV module can be reduced due to excessive heat from the sun. Therefore, providing an anti-reflective coating (ARC) is one solution to increase the efficiency of PV modules. This study aims to an…
Digital technology in the form of a drying oven is used for the drying process of a sample biomass fuel. It has been applied to replace the traditional drying process. This drying uses 2 types of biomass, namely Coconut Shell and Acacia Tree Branches. The biomass is used as fuel for the drying process in the drying oven. This study aims to analyze a change in temperature, humidity and heat with…
Poor water conditions are not only an indicator of environmental damage, but also a threat to the ecosystem. One of indicator water quality is determined by dissolved oxygen. In this research, an instrument was built to measure dissolved oxygen levels based on the susceptibility value of a solution at low frequencies of 1 Hz, 10 Hz and 100 Hz. A Magnetic instrument with an RC circuit are design…
Abstract: The learning tools developed are physics learning tools in the form of Learning Implementation Plan (RPP), Student Worksheet (LKPD) and Material Mastery Test based on Gasing Method. The purpose of this study was to produce Learning Tools on valid Harmonic Vibration materials. This research is expected to be a reference in making reference in making a valid learning device, especially …
This study aims to determine the layers of underground lithological structures in the Science Park, Riau University, Bina Widya Campus km. 12.5 Simpang Baru, Pekanbaru. The research location is an area that is often flooded, so research is needed to determine the cause of the puddle. Data interpretation uses the one-dimensional Schlumberger configuration resistivity geoelectric method. Data pro…
The increasing demand for hygienic, self-disinfecting and contamination-free surfaces has increased the needs for a self-cleaning protective material or surface. In this study a zinc oxide (ZnO) based self-cleaning thin film has been synthesized using a combination of the SILAR (Successive Ionic Layer Adsorption Reaction) method at the seeding step and the CBD (Chemical Bath Depositon) meth…
Physical activation can affect the quality of carbon electrodes so that it can improve the performance of supercapacitor cells. In this study, carbon electrodes were prepared from the Khalas Dates Seeds by varying their physical activation temperatures of 700C, 750C and 800C. Those samples were coded according to their activation temperatures, i.e. BKK-700, BKK-750 and BKK-800. The car…
The fabrication of activated carbon monoliths derived from onion skin waste for super capacitor electrode applications has been successfully done using different variations of chemical activators. The chemical activators used were KOH, ZnCl2 and NaOH, at a constant concentration of 0,5 M. The production of activated carbon monoliths was prepared through the process of drying, precarbonizati…
The increase in soil pollutant concentration induced by human activities has been increasingly concerning. Soil pollution measurement technology is required for soil management system to detect the heavy metal contamination. In this study, heavy metal contamination in the soil were estimated by combining chemical analysis and magnetic data. The soil samples were collected from five different lo…
Bio-kitchen waste is currently one of the most popular basic materials to be used as activated carbon because it has high porosity and conductivity as well as good stability with a suitable pore structure for supercapacitor electrodes. The purpose of this study was to determine the effect of the concentration of chemical activator ZnCl2 on the specific capacitance of the supercapacitor. Superca…