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Dila Nelvo Dasril, Nerifa Dewilza
Physics Education Research Journal, Volume 2, pp 95-104; doi:10.21580/perj.2020.2.2.5087

Abstract:
Research on the effectiveness of panoramic room walls has been carried out in the Radiology Installation of Prof. Dr. MA Hanafiah SM Batusangkar. This study aims to determine the effectiveness of the panoramic room walls in absorbing radiation emitted by panoramic aircraft, as well as knowing the safety level of the room around the panoramic inspection room in accordance with the dose limit values of workers and the general public. This type of research is a quantitative research by taking direct measurements. The research was conducted by measuring the radiation dose at six points of the panoramic room wall using a radiation measuring instrument, namely TLD-100. The results showed that the effectiveness of the walls was only able to absorb radiation less than 90%, with the shield category on the walls that was not good enough to withstand radiation. Therefore, it is necessary to renovate the panoramic room walls in accordance with safety standards.
Nur Khoiri, Choirul Huda, Hadhijah Assegaf
Physics Education Research Journal, Volume 2, pp 131-140; doi:10.21580/perj.2020.2.2.6088

Abstract:
The research purpose is explored the effect of guided inquiry learning with digital spring for science generics skills. The subject of research are 70 student in XI MIPA SMAN 11 Semarang consisting of 35 students in the experimental group and 35 students in the control group. Design study uses Quasy Experiment Design, the type to be used is Nonequivalent Control Group Design. Data collection techniques through observation and questionnaire with a Likert scale. The results of data analysis from observation sheet on average experiment class = 3,22 and the average control class = 2,93. This study uses independent sample t-test show tcount > ttable that is 3,76 > 1,99 interpreted tcount > ttable then Ho rejected Ho and accepted Ha. Based on the result of this research, it can be concluded that guided inquiry learning digital spring constant give positive influence to science generic skill student in SMAN 11 Semarang. Students' generic science skills were better after the implementation of guided inquiry learning assisted with teaching aids.
Lisa Puspitasari, Budi Astuti, Masturi Masturi
Physics Education Research Journal, Volume 2, pp 69-82; doi:10.21580/perj.2020.2.2.4959

Abstract:
This study aims to analyze the increase in students' activeness and conceptual understanding after the guided Project Based Learning (PjBL) model is applied. The research method used was a pre-experimental one group pretest-postest design. The research instruments included test and non-test instruments. The test instrument in this study was a reasoned multiple choice. The non-test instrument uses student activeness observation sheets. Students' activeness and conceptual understanding were analyzed using the N-Gain test. The significance of increasing students' activeness and understanding of concepts was analyzed using the Wilcoxon mathced pairs test. The results of the data analysis showed that the students' activeness and conceptual understanding of the Momentum, Impulse, and Collision material after being applied to guided PjBL experienced a low increase with N-Gain of 0.20 and 0.22. The results of the significance test of students' activeness and conceptual understanding were obtained values of 0.041 and 0.000 (<0.050). Based on the results of the analysis, it can be concluded that the implementation of the guided Project Based Learning model was able to significantly increase the activeness and understanding of students' concepts in the material Momentum, Impulse and Collision at Nurul Islami High School.
Hafidzi Nur Muhammad, Faizatun Nikmah, Nurul Umrotul Hidayah, Arghob Khofya Haqiqi
Physics Education Research Journal, Volume 2, pp 123-130; doi:10.21580/perj.2020.2.2.6176

Abstract:
Minyak goreng merupakan kebutuhan pokok bagi kehidupan manusia. Alternatif pengolahan minyak goreng bekas adalah melalui proses adsorbsi dengan arang aktif kayu leucaena leucocephala. Penelitian ini bertujuan untuk memanfaatkan kayu leucaena leucocephala dan arang aktif dari kayu tersebut sebagai adsorben minyak goreng bekas pakai. Arang aktif dari kayu leucaena leucocephala dapat menurunkan kadar asam lemak bebas dan bilangan peroksida minyak goreng sebelum dan sesudah penggorengan secara berulang-ulang sehingga minyak jelantah dapat dipakai kembali. Untuk metode yang digunakan dalam penelitian yaitu metode eksperimen. Uji coba menggunakan arang aktif kayu leucaena leucocephala dengan minyak jelantah dan mencampurkannya. Komposisi pada arang aktif 75%, sedangkan pada minyak jelantah 25% dalam waktu satu setengah jam. Penelitian membuktikan bahwa arang aktif dapat memperbaiki kualitas minyak jelantah dengan menurunkan kadar asam lemak sehingga menjadikan warna dari minyak jelantah menjadi lebih jernih
Lilin Nazwa Khunaeni, Wenty Dwi Yuniarti, Muhammad Ardhi Khalif
Physics Education Research Journal, Volume 2, pp 83-94; doi:10.21580/perj.2020.2.2.6144

Abstract:
This research aims to determine the appropriateness of a physics module with Augmented Reality (AR) technology. This research is an R&D research consisting of the initial study stages, planning, development, product assessment, product revision and field trials. Data collection techniques used were observation and interviews during the preliminary study, and questionnaires for validation of material experts and media experts, validation of physics teachers, and student responses. Based on the data analysis, it was concluded that the quality of the physics module was very good with a percentage value of 95% from material experts, 86.67% from media experts and 90% from physics teachers. Student responses to the physics module obtained a percentage of 89% in the very good category. Based on the research results, the physics module with Augmented Reality (AR) technology developed is appropriate and can be used in physics learning.
H Bintang, E Darnah, Ngia Masta, Rinaldi Rinaldi, T Guswantoro, M Sianturi
Physics Education Research Journal, Volume 2, pp 105-122; doi:10.21580/perj.2020.2.2.6208

Abstract:
Student-centered learning (SCL) is a learning approach that not only encourages to how student constructs their conceptual knowledge, but also to achieve the involvement of their knowledge in daily activity, in forms procedural and metacognitive knowledge. Flipped classroom learning models marked by reversed learning activities syntax between class and home, which promoted student to active self-learning, before turn into face to face class meeting. Problem Based Learning (PBL) model provides students to apply their knowledge to formulate strategy and solution in facing their problem. Flipped classroom or PBL, both are student-centered learning models that triggers student to self-constructed knowledge actively and student’s curiosity to solve their problem. This paper attempts to analyze the influence of integration flipped classroom and PBL on conceptual, procedural, and metacognitive knowledge on Linear Motion subject. This research is a quasi experimental model with post-test only control design. The population in this study were all students of class X MIPA SMA Negeri 37 Jakarta in the 2019-2020 school year. The sample in this study were students of class X MIPA 1 as the experimental class and class X MIPA 2 as the control class. The sample was taken using cluster sampling technique. The results obtained showed that the percentage of conceptual, procedural and metacognitive knowledge of the experimental class was 88.9%; 77.8%; and 88.9% which is higher than the control class with the respective percentage 66.7%; 55.8%; and 75%. The integration of the flipped classroom and PBL models can be applied to materials other than Linear Motion to improve conceptual, procedural, and metacognitive knowledge.
Iqbal Sugita, Y R Liana, A F Lestari, Ani Rusilowati, Bambang Subali
Physics Education Research Journal, Volume 2, pp 141-150; doi:10.21580/perj.2020.2.2.6095

Abstract:
The aims of this study was to test the effectiveness of the Relating, Experiencing, Applying, Cooperating, Transferring (REACT) learning model in improving students' understanding of physics concepts. This research used Action Research with the research subjects of class X MIPA 4 SMA N 2 Batang. Data collection techniques using tests. The results of the research in cycle I showed the number of students who got a score of ≥ 60 was 4 students and cycle II was 14 students. These results indicate that the REACT learning model can improve students' understanding of physics concepts. The learning process that is carried out is always connected with events that occur in real life so that students understand the concept more deeply. The REACT learning model can be applied to other physics materials so that students are more actively involved in learning and improve students' understanding of physics concepts.
Effendi Effendi, Dwi Pantriani
Physics Education Research Journal, Volume 2, pp 59-67; doi:10.21580/perj.2020.2.1.4906

Abstract:
The purpose of this study was to determine the effect of the application of Generative learning models on student learning outcomes in the Work and Simple Machine in MTs Nurussalam Sidogede grade VIII. The type of this research is a quantitative research. The population in this research were students of class VIII at MTS Nurussalam Sidogede consisting of 4 classes. Sampling in this study was randomly drawn. The experimental class uses the generative learning model, while the control class uses the conventional learning model. Data collection techniques using tests, and testing of hypotheses using t-test. Based on student learning outcomes obtained tcount = 3.09 which is more than ttable = 2.01; so it can be concluded that there are significant differences in learning outcomes between students with generative learning models and students with conventional learning models.
Millati Azka, Agus Sudarmanto, Hesti Khuzaimah Nurul Yusufiyah
Physics Education Research Journal, Volume 2, pp 9-17; doi:10.21580/perj.2020.2.1.3948

Abstract:
This study aims to examine the effect of experimental method on student learning motivation and student learning outcomes on rectilinear motion material in grade X at MAN Kendal. This is a quantitative research with a sample of 34 students of class X MIPA 4 as an experimental group and 32 students of class X MIPA 2 as a control group. Data collection techniques using test, questionare, observation, interview, and documentation. The experimental class is given learning using experimental methods and control classes using conventional methods. The hypothesis was tested using t test and simple linear regression. The results of hypothesis test show that learning motivation of the experimental class students is higher than the control class and learning outcomes of the experimental class are better than the control class. Based on the results of data analysis, it was concluded that there was a correlation between the experimental method of student motivation and learning outcomes.
Ellianawati Ellianawati, Siti Mufiatunnikmah, Natalia Erna Setyaningsih, Bambang Subali
Physics Education Research Journal, Volume 2, pp 19-33; doi:10.21580/perj.2020.2.1.5038

Abstract:
This study aims to determine the quality figures of 21st century-based multi-representation assessments on linear motion material. Type of this research is Research & Development (R&D). Data were analyzed using an assessment validity test by an expert and empirical assessment quality test to obtain quality figures in the form of validity, reliability, level of difficulty, and discrimination power. The results of the preliminary field testing analysis showed 58.33% items were declared valid and 41.67% items were declared invalid. Test items have very high reliability with a value of 0.877. The proportion of the level of difficulty is not ideal, that is equal to 58.33% of questions categorized as difficult and 41.67% of questions categorized as sufficient. The discrimination power of the questions is 8.34% of the questions in a good category, 22.22% are sufficient, 58.33% are bad, and 11.11% are very bad. The result of main field testing, 69.44% items were declared valid and 30.56% items were declared invalid. Test items have high reliability with a value of 0.879. The proportion of the level of difficulty obtained in the main field testing is also not ideal, which is 56% of the difficult category and 44% of the sufficient category. The discrimination power consist of 32% good, 40% were sufficient, and 28% were poor.
Asep Abdur Rais, Lukman Hakim, Sulistiawati Sulistiawati
Physics Education Research Journal, Volume 2, pp 1-8; doi:10.21580/perj.2020.2.1.5074

Abstract:
The purpose of this study is to understand students' concepts on indicators exemplifying the level of understanding of student concepts through guided inquiry. The population of this study was all grade XI students in one of the high schools in Palembang. This research is quantitative research. The results of understanding students' concepts can be seen from the results of the posttest of each class using t-test. Based on the results of the study showed there were differences between students in the experimental class and the control class. This can be seen from the t-test using SPSS 22 obtained significant results (2 –tailled of 0.00. These results indicate the guided inquiry model has an influence on understanding the concepts of physics.
Rusli Rusli, Elvira Azizah, Abdul Basid
Physics Education Research Journal, Volume 2, pp 51-57; doi:10.21580/perj.2020.2.1.5040

Abstract:
Research has been conducted aiming to determine the distribution of coal below the surface in Tulungagung Regency. The survey conducted in this study used a Wenner configuration resistivity geoelectric survey. Retrieval of geolithic resistivity data in the field of four trajectories. The results of data collection in the field oneach track are processed using 2D modeling in Res2dinv software. The results of the processing of the two-dimensional modeling are then interpreted. The structure of rock layers containing coal is shown by a yellow, red to dark purple scheme with a resistivity value of 75-350 ohm meters on the inside varying from 0 meters to 6.91 meters below the surface, spreading erratically and patching on each track.
Ahmad Minanur Rohim, Fianti Fianti, Upik Nurbaiti
Physics Education Research Journal, Volume 2, pp 35-41; doi:10.21580/perj.2020.2.1.4883

Abstract:
Technology that is increasingly developing produces equipments in the form of information, communication, production, transportation and entertainment facilities. Most of the equipments produce noises. Noise can be reduced by using acoustic dampers. This study aims to determine the potential for sound absorption from rice husks and straw as natural acoustic materials. Materials used include rice husks, rice straw, and resin. 12 cylindrical samples were made. Samples that have been made are tested using a sound absorption measuring instrument that is the impedance tube to measure the value of the sample sound absorption coefficient. The test results show the value of the sound absorption coefficient (α) can be influenced by the thickness. At a frequency of 500 Hz the value of the sound absorption coefficient (α) for each sample is 0.034dB; 0.030dB; 0.030dB; 0.027dB; 0.026dB; 0.027dB; 0.025dB; 0.025dB; 0.025dB; 0.024dB; 0.024dB; 0.023dB; 0.023dB. The sample material is good in research on materials 1 and 2 which have a sound absorption of 0.034 dB and 0.030 dB.
Samuel Gideon, Enda Rasilta Tarigan
Physics Education Research Journal, Volume 2, pp 43-49; doi:10.21580/perj.2020.2.1.5058

Abstract:
The most commonly used method for measuring the density of liquids is based on Archimedes' law. Lubricating oil generally has a defined density standard to show the quality of the oil. The purpose of this study is to determine oil density simply by applying Archimedes' law. This research was conducted in three steps. First, the measurement of the empty pycnometer. Second, the measurement of the pycnometer mass containing distilled water and oil. Third, measurement of copper mass in the medium of air, distilled water and oil. From the results of measurements and calculations, the obtained density of distilled water is (0.995 ± 3,582 x 10-4) gr/cm3 whose value is very close to the value of 1 gr/cm3 so that the distilled water used in this study is suitable as a reference/standard in finding volume copper; oil density is (0.868 ± 2.14 x 10-3) gr/cm3 whose value is very close to the value of oil density measured and calculated with a pycnometer of (0.875 ± 4.637 x 10-4) gr/cm3.
Etik Irawati, Wawan Kurniawan, Choirul Huda
Physics Education Research Journal, Volume 1, pp 21-28; doi:10.21580/perj.2019.1.1.3932

Abstract:
Keterbatasan alat peraga sederhana dalam pembelajaran fisika dan rendahnya pemahaman konsep mahasiswa membutuhkan penerapan keefektifan pembelajaran pada materi perpindahan kalor berbantuan alat peraga sederhana yang mudah dan murah dirancang oleh mahasiswa. Tujuan penelitian ini untuk mendeskripsikan keefektifan pembelajaran berbantuan alat peraga perpindahan kalor secara konduksi, konveksi, dan radiasi untuk mendukung pemahaman konsep mahasiswa. Penelitian ini menggunakan metode quasi eksperimen. Penelitian ini dilaksanakan di Universitas PGRI Semarang Jurusan S1 Pendidikan Matematika yang mengambil mata kuliah Fisika Dasar semester 2 tahun pelajaran 2018/2019. Sampel penelitian sebanyak 41 mahasiswa. Teknik pengumpulan data pada penelitian ini dilakukan dengan menggunakan tes dan angket. Teknik statistik menggunakan paired sample t-test. Hasil penelitian menunjukkan bahwa penggunaan alat peraga perpindahan kalor dalam pembelajaran efektif untuk mendukung pemahaman konsep mahasiswa. Pemahaman konsep meningkat setelah menggunakan alat peraga sederhana pada pembelajaran perpindahan kalor.
Erfin Nurfalah
Physics Education Research Journal, Volume 1, pp 46-55; doi:10.21580/perj.2019.1.1.3977

Abstract:
Belakangan ini era revolusi industri 4.0 menjadi perbincangan dunia. Kini dunia tengah menyaksikan perkembangan teknologi di segala sektor, sehingga perkembangan tersebut membawa hal positif bahkan di bidang pendidikan. Akan tetapi hal tersebut juga menjadi tantangan bagi pendidik, salah satunya kemampuan literasi teknologi yang harus dimiliki. Kompetensi abad 21 menuntut agar peserta didik terlibat langsung dalam proses pembelajaran yang memanfaatkan internet. Peserta didik bukan hanya sebatas mencari informasi, tetapi juga melaksanakan pembelajaran secara online. Tujuan penelitian ini adalah mendeskripsikan pembuatan e-learning berbasis virtual class dengan google classroom sebagai media pembelajaran fisika. Metode yang digunakan adalah studi pustaka. Fitur dasar google classroom terdiri atas topik, bahan ajar, pertanyaan, tugas kuis, dan tugas. Pengoptimalan fitur google classroom mempunyai dampak yang penting bagi pembelajaran di era revolusi industri 4.0, antara lain: (1) pembelajaran dilakukan secara online dengan memanfaatkan teknologi, (2) tidak terbatas oleh ruang dan waktu, (3) peserta didik terlibat langsung dalam proses pembelejaran yang memanfaatkan internet, (4) materi pembelajaran mudah diakses, (5) melatih keterampilan literasi data dan literasi teknologi. Google classroom merupakan layanan berbasis internet yang disediakan oleh Google dengan sistem e-learning sehingga dapat dijadikan media pembelajaran yang efisien, efektif serta interaktif untuk menunjang pembelajaran berbasis teknologi.
Choirul Huda, Feny Febriana Damayanti, Duwi Nuvitalia
Physics Education Research Journal, Volume 1, pp 1-10; doi:10.21580/perj.2019.1.1.3978

Abstract:
Penelitian ini bertujuan untuk menguji kelayakan instrumen dan alat peraga tabung resonansi horisontal untuk menunjang keterampilan generik sains siswa. Instrumen yang digunakan dalam penelitian ini adalah lembar observasi dengan jumlah 10 aktivitas siswa yang diamati. Media pembelajaran yang digunakan adalah produk berupa alat peraga tabung resonansi horisontal dan pedoman penggunaan alat. Penelitian ini merupakan penelitian deskriptif kualitatif untuk menilai dan mengetahui kualitas instrumen serta alat peraga untuk menunjang keterampilan generik sains siswa. Instrumen dan alat peraga masing-masing divalidasi oleh dua ahli pendidikan fisika. Hasil penelitian menunjukkan: 1) rata-rata hasil validasi oleh kedua ahli berada pada kriteria sangat valid dengan persentase masing-masing sebesar 85,42% untuk lembar observasi, 91,67% untuk alat peraga tabung resonansi horisontal, dan 100% untuk pedoman penggunaan alat; 2) reliabilitas produk berada pada kriteria reliabel dengan persentase instrumen lembar observasi 88,23%, alat peraga tabung resonansi horisontal 97,06%, dan pedoman penggunaan alat 100%. Berdasarkan hasil penelitian, instrumen dan alat peraga tabung resonansi horisontal layak digunakan untuk menunjang keterampilan generik sains siswa dengan kriteria sangat valid dan reliabel.
Lasma Br Hotang
Physics Education Research Journal, Volume 1, pp 56-68; doi:10.21580/perj.2019.1.1.4009

Abstract:
Hasil observasi awal dari penelitian ini adalah hasil wawancara pengetahuan yang diperoleh peserta didik dalam kelas hanya bertahan sesaat dalam kelas dan tidak mampu menghubungkan materi pelajaran dengan kehidupan nyata diperkuat juga dengan hasil ulangan yang rendah dimana hanya ada 7 orang (19,4%) yang tuntas dari 36 peserta didik dan ada 29 orang (80,5%) tidak tuntas. Prosedur penelitian tindakan kelas ini menggunakan 2 siklus dan akhir setiap siklus dilakukan ulangan harian untuk melihat peningkatan motivasi dan hasil belajar. Rata-rata ulangan harian pada siklus I adalah 65,11 kategorinya cukup, 14 peserta didik tuntas (38,88%) dan 22 peserta didik belum tuntas (61,11%) dan pada siklus II adalah 78,47 kategori baik 33 peserta didik tuntas (91,7%) dan 3 peserta didik belum tuntas (8,3%). Penerapan model pembelajaran discovery learning dapat meningkatkan motivasi dan hasil belajar fiska bagi peserta didik kelas XI IPA 3 SMAN 6 Pekanbaru.
Khotijah Khotijah, Arsini Arsini, Sheilla Rully Anggita
Physics Education Research Journal, Volume 1, pp 37-45; doi:10.21580/perj.2019.1.1.3961

Abstract:
This study aims to determine the feasibility and the effectiveness of using a video tracker application for practicum of physics 1 on momentum conservation. This is included in research and development type. Stages carried out in this study include: 1) define, is done by giving questionnaires and interviews, 2) design, includes media selection, format selection and produce the initial product design, 3) development, includes product development and material expert validation assessment, media experts and linguists and limited field testing. The validation test results obtained that the media is feasible to use with a percentage of 88% based on material experts with very good categories, 85% based on media experts with very good categories, and 78% based on linguists with good categories. The effectiveness of media is shown by high average value of the experimental class of 84,06 compared to the control class of 70,97. Student responses to the use of products are categorized very well with a percentage of 89%.
, Khumaedi Khumaedi, Sugiyanto Sugiyanto, F Setiaswan
Physics Education Research Journal, Volume 1, pp 29-36; doi:10.21580/perj.2019.1.1.3927

Abstract:
Telah dilakukan penelitian dengan menggunakan metode gayaberat untuk mengidentifikasi struktur bawah permukaan di Kawasan Kota Lama Semarang sebagai survei awal untuk keperluan mitigasi bencana. Pengolahan data gayaberat untuk mengidentifikasi struktur bawah permukaan dilakukan melalui beberapa tahapan. Tahap awal dilakukan dengan koreksi awal berupa koreksi pasang surut dan koreksi apungan, kemudian dilakukan koreksi lanjut hingga didapat kontur anomali Bouguer lengkap. Melalui anomali Bouguer lengkap dapat dipisahkan anomali gaya berat regional dan residual. Pemisahan anomali regional dari anomali Bouguer dalam penelitian ini menggunakan metode moving average (perata-rataan bergerak) sedangkan anomali residual didapatkan dengan cara mengurangkan anomali Bouguer dengan anomali regional. Pemisahan anomali regional dan residual penting untuk dilakukan pada penelitian identifikasi struktur bawah permukaan untuk menginterpretasikan struktur geologi dan mendapatkan target yang dicari. Nilai anomali regional di Kawasan Kota Lama Semarang antara 28.0 mGal – 28.4 mGal sedangkan untuk anomali residual memiliki antara 31.6 mGal – 32.8 mGal.
Lutfita Mukharovatun Azizah, Joko Budi Poernomo, Muhammad Izzatul Faqih
Physics Education Research Journal, Volume 1, pp 11-20; doi:10.21580/perj.2019.1.1.4006

Abstract:
Penelitian ini bertujuan untuk menghasilkan modul pembelajaran berbasis guided inquiry pada materi alat-alat optik dan menguji efektivitasnya. Penelitian dan pengembangan (Reseach and Development) ini mengacu pada model Borg and Gall (1983) yang dimodifikasi. Teknik pengumpulan data yang digunakan adalah observasi, angket, tes dan dokumentasi. Hasil uji kelayakan menunjukkan bahwa modul pembelajaran fisika berbasis guided inquiry pada materi alat-alat optik layak digunakan dengan persentase skor kelayakan dari ahli materi sebesar 87,27% dan dari ahli media sebesar 91,67%. Hasil uji efektifitas menunjukkan bahwa modul yang dihasilkan efektif digunakan. Hal ini ditunjukkan dengan hasil perhitungan uji t terhadap data tes hasil belajar peserta didik. Hasil uji t diperoleh ttabel sebesar 2,048 dan thitung sebesar 6,433, sehingga thitung>ttabel yang artinya 𝐻0 ditolak dan 𝐻𝑎 diterima.
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