Articles
<![CDATA[The Improvement of The Competency of Science Teachers Using Science KIT: Optimizing Scientific Learning ]]>
<![CDATA[Wahyuni Satria Dewi]]>;
<![CDATA[Mairizwan Mairizwan]]>;
<![CDATA[Renol Afrizon]]>;
<![CDATA[Hidayati Hidayati]]>
<![CDATA[ Indonesian Journal of Science and Mathematics Education Vol 4, No 1 (2021): Indonesian Journal of Science and Mathematics Education ]]>
Publisher : <![CDATA[Universitas Islam Negeri Raden Intan Lampung ]]>
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DOI: 10.24042/ijsme.v4i1.7956
<![CDATA[Based on observations and interviews with a science teacher at a junior high school in Pesisir Selatan Regency, it is known that there are still many science teachers who have not carried out practicum activities in scientific learning. Science kits are rarely used by teachers in science learning. The main reason is that the competence of science teachers in operating the science kit is still low. To improve the competence of science teachers in using KIT, it is very necessary to carry out activities to optimize the use of KIT for science teachers. The purpose of this study was to improve the competence of science teachers in using IPA KIT as a support for scientific learning. This type of research is a quasi-experimental design with a pretest-posttest using multiple choice test instruments at the beginning and at the end of the study. From the results of this study, it is known that there is an increase in the competence of science teachers in using science kits, with the percentage increase of 29.25%.]]>
<![CDATA[The Improvement of Physics Teachers’ Competence in Developing an Interactive Recitation Programs to Remediate Students’ Misconception ]]>
<![CDATA[Putri Dwi Sundari]]>;
<![CDATA[Wahyuni Satria Dewi]]>;
<![CDATA[Defrizal Saputra]]>;
<![CDATA[Mairizwan - Mairizwan]]>;
<![CDATA[Rahmat Hidayat]]>
<![CDATA[ Indonesian Journal of Science and Mathematics Education Vol 4, No 3 (2021): Indonesian Journal of Science and Mathematics Education ]]>
Publisher : <![CDATA[Universitas Islam Negeri Raden Intan Lampung ]]>
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DOI: 10.24042/ijsme.v4i3.10053
<![CDATA[During learning from home, the teacher is very limited in giving feedback on assignments. Consequently, students’ understanding of physics concepts is still low and experiencing misconceptions. Therefore, teachers should able to develop an interactive recitation program completed by corrective feedback that could remediate students’ misconceptions. The research objective is to improve the competence of physics teachers at Sijunjung Regency through mentoring in developing an interactive recitation program. This sort of research is quasi-experimental with one-group pretest-posttest design. The research data was obtained from the pretest and posttest about understanding of the interactive recitation programs. The results showed that there was an increase in the knowledge of high school physics teachers in understanding the interactive recitation program with a percentage of 32.4%, and the provision of mentoring activities have a significant effect on increasing the competence of physics teachers in developing interactive recitation programs.]]>
<![CDATA[Automatic Transfer Switch System Design on Solar Cell – Grid Hybrid Based on Android Application ]]>
<![CDATA[Washilla Audia]]>;
<![CDATA[Yulkifli Yulkifli]]>;
<![CDATA[Mairizwan Mairizwan]]>;
<![CDATA[Aditya Rinaldi]]>
<![CDATA[ EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 23 No. 04 (2022): Eksakta: Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464) ]]>
Publisher : <![CDATA[Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia ]]>
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DOI: 10.24036/eksakta/vol23-iss04/332
<![CDATA[The main source of electricity supply, namely PLN, greatly affects the supply of electricity and is not always continuous in its distribution. PLN power outages cause the distribution of human activities and productivity. The solution is to create a hybrid automatic transfer switch (ATS) system. The system works automatically as a hybrid power plant using a solar cell and PLN using ATS and remote monitoring using android. This type of research is classified as laboratory experimental engineering research. This study aims to determine the power savings of PLN that flows to the load after using the ATS system, work specifications, and system design specifications. In this study, a solar cell with a maximum capacity of 20 watts was used. The results of power savings after using the ATS system in sunny weather conditions for 10 hours of irradiation with an average solar intensity of 318,551 lux is 16,84%. The system performance specifications are small, portable, and easy to operate. The values of accuracy and precision in power saving are 96,13% and 95%. ]]>
<![CDATA[The Improvement of Science Teachers’ Competence in Developing the Integrated Sciences Worksheets Based on Scientific Literacy to Support the Implementation of the Merdeka Curriculum ]]>
<![CDATA[Wahyuni Satria Dewi]]>;
<![CDATA[Mairizwan Mairizwan]]>;
<![CDATA[Renol Afrizon]]>;
<![CDATA[Khairil Arif]]>;
<![CDATA[Putri Dwi Sundari]]>
<![CDATA[ Jurnal Penelitian Pendidikan IPA Vol. 8 No. 6 (2022): December ]]>
Publisher : <![CDATA[Postgraduate, University of Mataram ]]>
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DOI: 10.29303/jppipa.v8i6.2558
<![CDATA[In preparation for the implementation of the Merdeka Curriculum, science learning in schools still has problems, namely; 75% of science teachers have not been able to design real problems in everyday life as scientific contexts, and only 50% of science teachers can integrate science material in an integrated manner on worksheets, and there are still very few science teachers who are ready to implement the curriculum. The purpose of this study was to determine the effect of providing technical guidance (Bimtek) on developing scientific literacy-based worksheets on the competence of science teachers. The Bimtek activity consists of six stages: pretest, material debriefing, technical guidance (Bimtek), independent activities, evaluation monitoring, and posttest. From the Bimtek activities carried out for science teachers at MGMP Pesisir Selatan districts significantly increased teacher competence in developing scientific literacy-oriented worksheets. Based on the results of data analysis and discussion, it was found that the post-test average score was higher than the pretest average score. The science teacher pretest average score was 39.95, while the science teacher posttest average score was 62.10. The percentage increase in teacher competence is 23%.]]>
<![CDATA[Increasing the Competence of Physics Teachers in Designing PjBL-Based Teaching Aids for the Implementation of the Merdeka Curriculum ]]>
<![CDATA[Mairizwan Mairizwan]]>;
<![CDATA[Hidayati Hidayati]]>;
<![CDATA[Wahyuni Satria Dewi]]>;
<![CDATA[Renol Afrizon]]>;
<![CDATA[Roni Jarlis]]>
<![CDATA[ Jurnal Penelitian Pendidikan IPA Vol. 8 No. 6 (2022): December ]]>
Publisher : <![CDATA[Postgraduate, University of Mataram ]]>
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DOI: 10.29303/jppipa.v8i6.2585
<![CDATA[A visual aid is an object that can be used as a support for physical science activities. Teaching aids can be designed by the teacher using readily available materials. The competence of physics teachers in Pasaman Barat Regency has not been optimal in compiling PjBL-based Physics teaching aids student worksheets. So, the facts found in the field show that the professional competence and pedagogical competence of physics teachers in Pasaman Barat Regency in physics learning are not optimal. Therefore, it is necessary to increase the competency of Physics teachers in designing PjBL-based teaching aids. This type of research is quasi-experimental research. The treatment is in the form of assistance in making teaching aids based on PjBL. Bimtek activities in the form of practical assistance increase the competency of activity participants, which in this case are Physics teachers in Pasaman Barat Regency. The increase in the competence of physics teachers in Pasaman Barat Regency in making PjBL-based physics teaching aids was 24.17%. In addition, the mentoring activities provided are effective for increasing the mastery of MGMP Physics teachers in the Pasaman Barat Regency of the PjBL model material. This activity is also helpful for teachers designing teaching aids to support Physics learning as an merdeka curriculum implementation]]>
<![CDATA[Inert Gas Axial Flow Analysis on Thermal System with Natural Convection Condition ]]>
<![CDATA[Rio Anshari]]>;
<![CDATA[Mairizwan Mairizwan]]>;
<![CDATA[Fandi Oktasendra]]>;
<![CDATA[Debi Rianto]]>;
<![CDATA[Zulhendra Zulhendra]]>
<![CDATA[ EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 24 No. 01 (2023): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464) ]]>
Publisher : <![CDATA[Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia ]]>
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DOI: 10.24036/eksakta/vol24-iss01/338
<![CDATA[The Fukushima nuclear accident in 2011 became the basis for consideration of the use of gas as a coolant in nuclear reactors. This is because the convection rate of gas flow in the cooling channel can occur naturally due to differences in density and does not require the help of a pumps for the circulation of the coolant. This study aims to analyze how the flow pattern of an inert gas on a vertical-axial reference by natural convection in a thermal system. The focus of this research is to study the flow parameters of the coolant with a gas phase. This research is an experimental study. The analysis was carried out using a descriptive approach and computer simulation-assisted numerical analysis methods. The results showed that the distribution and variation of heat was radially dominant in the middle so that the coolant channel wall received less heat load. The magnitude of the pressure drop along the vertical-axial channel shows a homogeneous pattern and decreases radially from center to edge. These results indicate the use of inert gas as a coolant can be considered as an alternative coolant in heat systems that do not depend on pumps in operating conditions.]]>
<![CDATA[Iot-Based Blood Pressure and Body Temperature Monitoring System ]]>
<![CDATA[Guruh Eko Saputro]]>;
<![CDATA[- Yohandri]]>;
<![CDATA[- Mairizwan]]>;
<![CDATA[Elsa Yuniarti]]>
<![CDATA[ PILLAR OF PHYSICS Vol 15, No 2 (2022) ]]>
Publisher : <![CDATA[Department of Physics – Universitas Negeri Padang UNP ]]>
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DOI: 10.24036/13450171074
<![CDATA[Health is an essential element that humans must consider. Examination of vital signs has two critical parameters in the diagnosis: blood pressure and body temperature. Blood pressure is a critical factor for the circulatory system. There are two types of blood pressure, namely systolic and diastolic. Body temperature is a measured body temperature expressed in degrees Celsius (℃). We developed an IoT-based blood pressure and body temperature monitoring device using MPX5100DP & DS18B20 sensors. The measurement carried out by comparing pressure and temperature data with standard tool, it was found that the percentage level of accuracy of the average pressure of 96.26% and temperature of 98.61%. Accuracy data were obtained for pressure measurement is 93.01% and for temperature measurement is 99.91%. The error on the device are found to be 2.96% systolic pressure, 3.29% diastolic pressure, and 0.63% body temperature. According to that, developed blood pressure and body temperature monitoring tool can work satisfiedly]]>
<![CDATA[Maximum Power Point Tracking Solar Charge Controller Based on Internet of Things with Smartphone Display ]]>
<![CDATA[Muhammad Ajriy Ushalli]]>;
<![CDATA[- Yulkifli]]>;
<![CDATA[- Mairizwan]]>;
<![CDATA[Rio Anshari]]>
<![CDATA[ PILLAR OF PHYSICS Vol 16, No 1 (2023) ]]>
Publisher : <![CDATA[Department of Physics – Universitas Negeri Padang UNP ]]>
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DOI: 10.24036/13584171074
<![CDATA[Electrical energy is a very important thing in life, but the main source at this time is still using limited materials. The solution to this problem requires renewable energy as an alternative source. This research discusses solutions with the use of solar cells. Harvesting of solar cell power is carried out using a Maximum Power Point Tracking (MPPT) based on Internet of Things (IoT). This research is classified as development research. The purpose of this research is the performance specification and design specifications. The data obtained in this study are comparisons of MPPT data and not using MPPT, and also accuracy and precision data of the instrument. Data collection was carried out on August 7, 2022 at 10.00 WIB - 16.00 WIB. In the study, it was found that the power harvested using the MPPT system was much better than without using the MPPT system. The system performance specifications are built with various electronic components and microcontrollers, all components are included in a box measuring 20cm x 15cm x 9cm. design specifications obtained an good data with MPPT based on IoT. The value of accuracy instrument is obtained 93,87% and the precision value of the instrument is obtained 94,944%. And also obtained good data transfer capabilities from the instrument, so that data transfer can be done continuously. with the method used, the research went well and in line with expectations]]>
<![CDATA[Smart Garden System Based on Internet of Things using NodeMCU ESP8266 ]]>
<![CDATA[Waldy Mukhlis]]>;
<![CDATA[- Yohandri]]>;
<![CDATA[- Yulkifli]]>;
<![CDATA[- Mairizwan]]>
<![CDATA[ PILLAR OF PHYSICS Vol 16, No 2 (2023) ]]>
Publisher : <![CDATA[Department of Physics – Universitas Negeri Padang UNP ]]>
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DOI: 10.24036/13455171074
<![CDATA[Gardening is an agricultural sector that requires control and monitoring of work. However, the management and monitoring are still done manually. Therefore, we developed an internet of the things-based smart garden to monitor and control plants. This study aims to determine the design and performance of the system. This research is a type of engineering research. The measurement technique is to measure directly by comparing air humidity, air temperature, soil moisture, and soil temperature with the standard tool. The indirect measurement is by analyzing the value of accuracy and precision of the instrument. The system uses a DHT11 sensor measuring air temperature and humidity, a soil moisture sensor, and a DS18B20 sensor to measure soil temperature. The device has nearly 100% accuracy in all parameters, especially in the range of 93.53% to 98.61%. Precision for all parameters of the selected devices is also close to 100% in the range of 98.6% to 99.8%. Based on these results, the design of the smart garden tool can work well]]>
<![CDATA[Improving the Capacity of Physics Teachers in the Development of Laboratory Experiment Kits Based on Video Analysis and Modeling Tool ]]>
<![CDATA[Mairizwan Mairizwan]]>
<![CDATA[ PILLAR OF PHYSICS EDUCATION Vol 16, No 3 (2023) ]]>
Publisher : <![CDATA[Universitas Negeri Padang ]]>
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DOI: 10.24036/2632171074
<![CDATA[Science subjects really need a learning model that makes students learn a lot from experience, not from verbal speeches and memorizing concepts given by the teacher. Experience can only be gained through practical activities and experiments which can ultimately improve students' science process skills. The reality in the field shows that physics experimental activities cannot be carried out optimally because a lot of equipment cannot be operated, the number of experimental sets is not enough and the equipment needed is quite expensive. The aim of this research is to increase teachers' skills in developing low-cost laboratory experimental kits by combining technology from video analysis and modeling tools with the research object being the physics MGMP teachers of Agam district. Implementation stages include providing training/workshops, practical implementation and evaluation of results. After carrying out this activity stage, the results obtained are video analysis products from participants and student worksheets. The results of this research can be analyzed and concluded that physics teachers' understanding and skills in carrying out video-based practical activities have increased due to limited practical equipment in the laboratory. The increase in participants' understanding can be seen from the results and their satisfaction with the implementation of laboratory experiment kit development activities based on video analysis and modeling tools. Therefore, improving these skills has a very good impact on teachers to increase learning variations that attract students' interest, and assist students in understanding Physics concepts correctly and being able to find their best potential]]>
