Results in Journal Physics Education Research Journal: 21
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Physics Education Research Journal, Volume 2, pp 95-104; doi:10.21580/perj.2020.2.2.5087
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.
Physics Education Research Journal, Volume 2, pp 123-130; doi:10.21580/perj.2020.2.2.6176
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
Physics Education Research Journal, Volume 2, pp 131-140; doi:10.21580/perj.2020.2.2.6088
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.
Physics Education Research Journal, Volume 2, pp 69-82; doi:10.21580/perj.2020.2.2.4959
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.
Physics Education Research Journal, Volume 2, pp 141-150; doi:10.21580/perj.2020.2.2.6095
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.
Physics Education Research Journal, Volume 2, pp 105-122; doi:10.21580/perj.2020.2.2.6208
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.
Physics Education Research Journal, Volume 2, pp 83-94; doi:10.21580/perj.2020.2.2.6144
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.
Physics Education Research Journal, Volume 2, pp 59-67; doi:10.21580/perj.2020.2.1.4906
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.
Physics Education Research Journal, Volume 2, pp 9-17; doi:10.21580/perj.2020.2.1.3948
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.
Physics Education Research Journal, Volume 2, pp 19-33; doi:10.21580/perj.2020.2.1.5038
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.