Jurnal Penelitian Pendidikan IPA (Science Education Graduate Program University of Mataram)
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Influence of Experimental Learning Models on Cognitive Learning Outcomes in Energy Transformation Material in the Independent Curriculum
No full textThis study aims to test the effect of experimental learning models on the cognitive learning outcomes of 4th grade elementary school students on the material of energy transformation in the Independent Curriculum. Quantitative methods with quasi-experimental designs were used, involving all 4th grade elementary school students in Tugu District, Semarang City, divided into experimental and control classes. The experimental class was taught using an experimental learning model, while the control class used the lecture method. Cognitive learning outcomes were measured using tests that included indicators of essential competency achievement in the material of energy transformation. Data were analyzed using normality tests, homogeneity tests, t tests, N-Gain tests, and hypothesis tests to compare the average post-test scores between the two groups. The results showed a significant difference between students' cognitive learning outcomes in the two groups. The data obtained in the t stat column or tcount was 4.005, and the Critical two-tail or ttable was 1.972. The tcount > ttable = 4.005 > 1.972 was obtained based on this. So, it can be concluded that, with a significance level of 5%, Ha is accepted and H0 is rejected. This study concludes that the experimental learning model positively affects students' cognitive learning outcomes on energy transformation material in the Independent Curriculum and can be an effective alternative to improve cognitive learning outcomesThis study aims to test the effect of experimental learning models on the cognitive learning outcomes of 4th grade elementary school students on the material of energy transformation in the Independent Curriculum. Quantitative methods with quasi-experimental designs were used, involving all 4th grade elementary school students in Tugu District, Semarang City, divided into experimental and control classes. The experimental class was taught using an experimental learning model, while the control class used the lecture method. Cognitive learning outcomes were measured using tests that included indicators of essential competency achievement in the material of energy transformation. Data were analyzed using normality tests, homogeneity tests, t tests, N-Gain tests, and hypothesis tests to compare the average post-test scores between the two groups. The results showed a significant difference between students' cognitive learning outcomes in the two groups. The data obtained in the t stat column or tcount was 4.005, and the Critical two-tail or ttable was 1.972. The tcount > ttable = 4.005 > 1.972 was obtained based on this. So, it can be concluded that, with a significance level of 5%, Ha is accepted and H0 is rejected. This study concludes that the experimental learning model positively affects students' cognitive learning outcomes on energy transformation material in the Independent Curriculum and can be an effective alternative to improve cognitive learning outcome
Analysis of Customer Loyalty and Satisfaction Using Structural Equation Modeling (SEM) Approach
No full textThis study aims to analyze the factors influencing customer satisfaction and loyalty at PT. PLN (Persero) ULP Tanjung Morawa using the Structural Equation Modeling (SEM) approach. A quantitative method was applied by distributing structured questionnaires to 150 customers selected through purposive sampling. The analysis was conducted using SmartPLS version 3.0. The results indicate that customer satisfaction has a significant positive effect on customer loyalty. Furthermore, perceived service quality and perceived value significantly influence customer satisfaction, while trust has a strong and significant effect on customer commitment. However, trust does not directly affect customer loyalty. These findings suggest that improving service quality and building trust are essential strategies to enhance customer satisfaction and commitment, which in turn foster customer loyalty. The study provides practical insights for PT. PLN to refine its customer relationship strategies in response to competitive service demands
Optimasi Sistem MagnetoHydrodynamics (MHD) Sederhana untuk Aplikasi Aliran Fluida
No full textMagnetohydrodynamics (MHD) studies the relationship between electromagnetism and fluid mechanics, a concept with various practical applications, including marine propulsion systems and electromagnetic pumps. This study aims to optimize a simple MHD system to improve the performance of fluid rate measurement based on electromagnetic principles. Optimization is carried out through the analysis of the influence of variations in several system characteristics, namely the given electrical voltage, the distance between electrodes, the length of the electrode, and the salinity of the saltwater. The method employed is experimental, utilizing a simple MHD system design that enables the quantitative observation of changes in the speed of saltwater resulting from the interaction between magnetic and electric fields. The speed of saltwater is measured using a visual approach with the Tracker analysis application. The results showed that increasing the voltage and salinity of the saltwater, as well as decreasing the electrode length or the distance between electrodes, all contribute to increasing the speed of saltwater flow. In other words, each parameter makes a significant contribution to fluid dynamics, thereby allowing for the optimal configuration of the MHD system. The findings in this study are expected to serve as the basis for the development of simple MHD-based fluid rate measurement instruments that are efficient and applicable, enabling a concrete illustration of electromagnetic theory and fluid dynamics.Istilah Magnetohydrodinamic (MHD) mempelajari keterkaitan electromagnetism dengan mekanika fluida yang merupakan konsep pada berbagai aplikasi praktis seperti system propulsi laut, pompa elektromagnetik. Telah dilakukan penelitian melalui rangkaian MHD sederhana untuk mengilustrasikan teori elektromagnetik dan dinamika fluida secara konkrit sebagai pengembangan media pembelajaran. Penelitian ini berfokus pada pengaturan variabel seperti beda potensial, jarak antar elektroda, panjang elektroda, dan salinitas air garam yang menjadi indikator terbentuknya medan listrik dan hubungannya dengan laju aliran air garam. Hasil penelitian menunjukkan bahwa peningkatan beda potensial, panjang elektroda, dan salinitas air garam serta penurunan jarak antar elektroda akan meningkatkan laju aliran air garam. Optimasi sistem MHD memerlukan keseimbangan antar variabel yang terlibat agar dapat mencapai efisiensi maksimal dalam menghasilkan aliran fluida
Analysis of Wastewater Treatment Performance in Animal Slaughtering Industry: Evaluation of Efficiency and Wastewater Quality
No full textThe slaughterhouse industry generates liquid waste with high organic loads and complex composition, which can pose environmental and public health risks. This study aims to evaluate the performance of a liquid waste treatment plant in a slaughterhouse. Quantitative methods were used for objective measurements, with sampling conducted at five key points in the wastewater treatment system. Parameters analyzed included pH, DO, COD, TSS, NH3, and fat, oil, and grease. The results showed that The Collecting Tank exhibited high COD reduction efficiencies between 87.52% and 93.89%, alongside TSS reductions ranging from 83.15% to 92.95%. Conversely, the Sequencing Batch Reactor demonstrated inefficiency in COD reduction, with outlet measurements exceeding inlet values; however, it achieved a 50.44% reduction in NH3 in one instance. The Anaerobic Tank showed significant COD reduction efficiencies from 72.66% to 98.27%, but NH3 reduction was negligible. Lastly, the Secondary Clarifier was inefficient in COD performance, with all tests indicating higher outlet results, while TSS efficiency was noted in only one test at 71.96%. The conclusion was although the Collecting Tank and Anaerobic Tank showed high efficiency in COD reduction, the Sequencing Batch Reactor and Secondary Clarifier units showed the NH3 reduction efficiency varied among the units tested.Abstract: The slaughterhouse industry produces liquid waste containing high organic loads and complex composition, which can pose environmental and public health challenges. This study aims to evaluate the performance of a liquid waste treatment plant in a slaughterhouse. Quantitative methods were used for objective measurements, with sampling conducted at five key points in the wastewater treatment system. Parameters analyzed included pH, dissolved oxygen (DO), COD, TSS, ammonia (NH3), and fat, oil, and grease (FOG). The results showed that the collection tank and anaerobic tank had high COD reduction efficiencies, reaching 93.89% and 98.27%, respectively. However, the Sequencing Batch Reactor (SBR) stage showed inability to reduce COD, while NH3 reduction was also unsuccessful in the anaerobic stage. In addition, the performance of the secondary clarifier was inconsistent, with most tests showing low efficiency. The conclusion of this study highlights the need for improvements in the treatment process, including the implementation of pretreatment techniques such as initial sedimentation and blower maintenance to increase oxygen supply. Recommendations also include adjustments to the scheme in the SBR system and reuse of wastewater for industrial activities, to ensure compliance with the quality standards set by the East Java Governor Regulation Number 72 of 2013
Pengembangan Tes Bertahap Terpadu untuk Mengidentifikasi Pemahaman Konsep IPA dan Miskonsepsi Peserta Didik SMP Kelas VII
No full textThis study aims to produce an integrated, valid, and practical step-by-step test that is valid, reliable, and practical to identify students' understanding of science concepts and misconceptions. The study was conducted based on the Plomp & Nieveen model and test development steps by Oriondo & Dallo-Antonio. The subject of this study is an integrated gradual test. The object of this research includes the characteristics, validity, reliability, practicality, and profile of students' understanding of concepts and misconceptions in science learning. Data was collected through interviews, document studies, questionnaires and tests. The data was analyzed qualitatively and quantitatively. The results of the study obtained the characteristics of an integrated phased test including a four-level diagnostic test. Integrated phased tests with valid, reliable and practical categories. The results of the measurement of the students' science concept understanding profile on temperature, heat and expansion materials obtained an average understanding of concepts with a low category. The average misconception of students in the material Temperature, Heat and Expansion was obtained at 63% with a high category. The causes of misconceptions in students include their own thoughts, workbook books, and learning resources available on the internet. The integrated gradual test is able to reveal the profile of students' concept understanding and misconceptions so that science learning outcomes are of higher quality.Penelitian ini bertujuan menghasilkan tes bertahap terpadu yang valid, reliabel, dan praktis untuk mengidentifikasi pemahaman konsep IPA dan miskonsepsi peserta didik. Penelitian ini dilakukan berdasarkan model Plomp & Nieveen terintegrasi langkah-langkah pengembangan tes oleh Oriondo & Dallo-Antonio. Subjek penelitian ini adalah tes bertahap terpadu. Objek penelitian ini meliputi karakteristik, validitas, reliabilitas, kepraktisan, dan profil pemahaman konsep dan miskonsepsi peserta didik pada pembelajaran IPA. Data dikumpulkan melalui wawancara, studi dokumen, angket dan tes. Data dianalisis secara kualitatif dan kuantitatif. Hasil penelitian diperoleh: (1) karakteristik tes bertahap terpadu termasuk tes diagnostik empat tingkat. (2) Validitas tes bertahap terpadu yaitu validitas teoritis pada aspek isi memperoleh skor 0,98 dengan kategori validitas sangat tinggi, validitas teoritis pada aspek bahasa memperoleh skor 98,48 dengan kategori sangat tinggi dan validitas empiris memperoleh kategori butir soal valid. (3) Reliabilitas tes bertahap terpadu diperoleh nilai r11 yaitu 0,796 dengan kateori reliabilitas tinggi. (4) Kepraktisan tes bertahap terpadu meliputi uji kepraktisan oleh guru IPA memperoleh skor 93,53 dengan kategori sangat praktis dan uji kepraktisan oleh peserta didik memperoleh skor 82,11 dengan kategori sangat praktis. (5) Profil pemahaman konsep IPA peserta didik yang tertinggi yaitu kemampuan membedakan sebanyak 18% dan yang terendah yaitu kemampuan menjelaskan sebanyak 10%. Rata-rata pemahaman konsep IPA peserta didik yaitu 35% dengan kategori sedang. Profil miskonsepsi tertinggi yaitu 34% peserta didik mengalami miskonsepsi utuh. Rata-rata miskonsepsi peserta didik adalah 63% dengan kategori tinggi. Hasil penelitian tersebut menujukkan tes bertahap terpadu tergolong valid, reliabel, dan praktis dan mampu mengidentifikasi pemahaman konsep dan miskonsepsi peserta didik pada pembelajaran IPA
Controlling Noise Levels on the Hearing Health of Mining Workers in the Crushing Plant Area
No full textThe mining industry, especially in the crushing plant area, faces serious problems related to noise that can reach more than 85 dB(A). Noise exposure for 8 working hours is at risk of causing temporary or permanent hearing loss (NIHL), which is a common occupational disease found in crushing plant workers. The type of research used in this study is descriptive analytical with a cross-sectional approach. Data collection techniques were carried out by measuring noise levels in the Crushing Plant area and distributing questionnaires to obtain data on the hearing health of mining workers. The location of this study was at CV. Tekad Jaya. The results of the noise level study at CV. Tekad Jaya showed an alarming situation, where 50% of the 14 measurement points exceeded the threshold of 85 dB, with a peak of 96.86 dB at point Std 10. The health impacts were clearly visible with 46.2% of workers experiencing headaches and 61.5% having difficulty communicating, even though the majority had used PPE. The combination of distance and vegetation has proven effective in reducing noise up to 76 dBA at a distance of 95 meters. The metal plate enclosure system showed positive results, reducing noise levels to 83 dBA inside and 67 dBA outside the building. Recommended control strategies include a zoning system with double protection, worker rotation, and health monitoring for areas >85 dBA, and a preventive approach for zones <85 dBA
Evaluation of P5 Implementation in Supporting STEM-based Learning at Vocational Schools using the CIPP Model
No full textThis article evaluates the implementation of the Pancasila Student Profile Strengthening Project (P5) at SMK Negeri 1 Suliki within the framework of the Kurikulum Merdeka. The study aims to assess the alignment of P5 execution with official educational guidelines and identify challenges in its implementation. Utilizing a descriptive qualitative method, data were collected through interviews, observations, and documentation from 158 students and key stakeholders, applying the CIPP evaluation model (Context, Input, Process, Product). The findings reveal a strong alignment between P5 objectives and the school’s vision, yet highlight significant challenges, including limited teacher understanding, inadequate resources, and inconsistent student engagement. The study also highlights the role of P5 activities in fostering competencies related to STEM-based learning approaches, crucial for preparing vocational students for 21st-century challenges. Recommendations for improvement include enhanced educator training, resource allocation, and fostering a supportive school culture. This evaluation provides a comprehensive overview of P5 implementation, contributing to the ongoing discourse on educational quality in vocational schools.Artikel ini mengevaluasi pelaksanaan Proyek Penguatan Profil Siswa Pancasila (P5) di SMK Negeri 1 Suliki dalam kerangka Kurikulum Merdeka. Penelitian ini bertujuan untuk menilai keselarasan pelaksanaan P5 dengan pedoman pendidikan resmi dan mengidentifikasi tantangan dalam pelaksanaannya. Dengan menggunakan metode kualitatif deskriptif, data dikumpulkan melalui wawancara, observasi, dan dokumentasi dari 158 siswa dan pemangku kepentingan utama, dengan menerapkan model evaluasi CIPP (Konteks, Input, Proses, Produk). Temuan penelitian mengungkapkan adanya keselarasan yang kuat antara tujuan P5 dan visi sekolah, namun menyoroti tantangan yang signifikan, termasuk pemahaman guru yang terbatas, sumber daya yang tidak memadai, dan keterlibatan siswa yang tidak konsisten. Rekomendasi untuk perbaikan meliputi peningkatan pelatihan pendidik, alokasi sumber daya, dan pengembangan budaya sekolah yang mendukung. Evaluasi ini memberikan gambaran menyeluruh tentang pelaksanaan P5, yang berkontribusi pada wacana yang sedang berlangsung tentang kualitas pendidikan di sekolah kejuruan
Sebuah Tren Penelitian Laboratorium Virtual Berbasis STEM dalam Pembelajaran Sains dan Dampaknya terhadap Keterampilan Proses Sains melalui Analisis Bibliometrik (2020-2024) dan Kontribusi Indonesia
No full textThis paper aims to analyze the scientific trend of research on the impact of virtual laboratories on STEM-based science learning and their influence on students' science process skills through bibliometric study and to explore how the contribution of Indonesian researchers in the Scopus database from 2020 to 2024. The sample was composed of 7 documents in total. The results revealed that scientific publication on the impact of virtual laboratories on STEM-based science learning and their influence on students' science process skills has been increasing. In the last five years, seven countries have contributed to writing journal articles related to on the impact of virtual laboratories on STEM-based science learning and their influence on students' science process skills. The seven countries are Indonesia, Brazil, Rwanda, Zimbabwe, the United States, Spain, and Mexico. There is one journal from Indonesia that discusses on the impact of virtual laboratories on STEM-based science learning and their influence on students' science process skills in the last five years, namely a journal written by Usman et al. (2021) and published in the Journal of Physics: Conference Series, Yogyakarta State University, Indonesia. The research findings could aid related researchers to recognize the trend of impact of virtual laboratories on STEM-based science learning and their influence on students' science process skills research globally and recommend directions for further research.Tulisan ini bertujuan untuk menganalisis tren ilmiah penelitian tentang dampak laboratorium virtual terhadap pembelajaran sains berbasis STEM dan pengaruhnya terhadap keterampilan proses sains siswa melalui studi bibliometri dan untuk mengeksplorasi bagaimana kontribusi peneliti Indonesia dalam database Scopus dari tahun 2020 hingga 2024. Sampel terdiri dari total 7 dokumen. Hasil penelitian mengungkapkan bahwa publikasi ilmiah tentang dampak laboratorium virtual terhadap pembelajaran sains berbasis STEM dan pengaruhnya terhadap keterampilan proses sains siswa telah meningkat. Dalam lima tahun terakhir, tujuh negara telah berkontribusi dalam penulisan artikel jurnal terkait dampak laboratorium virtual terhadap pembelajaran sains berbasis STEM dan pengaruhnya terhadap keterampilan proses sains siswa. Ketujuh negara tersebut adalah Indonesia, Brasil, Rwanda, Zimbabwe, Amerika Serikat, Spanyol, dan Meksiko. Ada satu jurnal dari Indonesia yang membahas tentang dampak laboratorium virtual terhadap pembelajaran sains berbasis STEM dan pengaruhnya terhadap keterampilan proses sains mahasiswa dalam lima tahun terakhir, yaitu jurnal yang ditulis oleh Usman et al. (2021) dan diterbitkan dalam Journal of Physics: Conference Series, Universitas Negeri Yogyakarta, Indonesia. Temuan penelitian dapat membantu peneliti terkait untuk mengenali tren dampak laboratorium virtual pada pembelajaran sains berbasis STEM dan pengaruhnya terhadap penelitian keterampilan proses sains siswa secara global dan merekomendasikan arah untuk penelitian lebih lanjut
Correlation of Virtual Classroom Intervention with Help Seeking Behavior in Adolescents with Anxiety and Depression in Ketapang Regency
No full textThere were 9,162,886 cases of depression with a prevalence of 3.7 percent among Indonesian adolescents. However, there is no specific intervention to prevent and overcome this problem, especially in the field of mental health promotion. This study aims to determine the effect of health education through virtual classes on anxiety and depression on the knowledge and attitudes of adolescents in Ketapang Regency. The method used was quasi experimental pre and post with control and intervention groups. The population in this study were high school/equivalent adolescents in Ketapang Regency with a total sample of 80 divided into 40 control groups and 40 intervention groups. The variable used is help-seeking behavior. The intervention used is a Virtual Class involving 2 professional experts in the field of adolescent mental health. The intervention was carried out 2 times in a duration of 14 days. Before the intervention, a pretest test was conducted. The media used are cellphones, laptops or gadgets that can operate Zoom Meeting. Analysis of results using univariate, bivariate and multivariate tests with the help of the SPSS version 25.0 application. The results of the analysis showed that there were differences in behavior in respondents before and after the intervention in the intervention group. The behavior variable of the intervention group before and after the intervention has a significance value of 0.000 with the Wilcoxon test, which means that there is a difference in value after the intervention. There was an improvement in behavior. Overall, the behavior of the intervention group has increased compared to the control group which tends to stagnate. After the Spearmann correlation analysis test was carried out, the results of the behavior variable were found to be 0.008 with a correlation coefficient of 0.416. These results indicate that in the behavior variable there is a fairly good relationship. Virtual classes for high school teenagers in Ketapang improve behavior and have a fairly close relationship
Development of Interactive Media Articulate Storyline 3 on Earth Structure Material to Improve Elementary School Students' Science Learning Outcomes
No full textThis study aims to develop, test the feasibility and effectiveness of interactive learning media Articulate Storyline 3 to improve learning outcomes in grade V students at SDN Sembaturagung 02 Pati Regency. This type of research is development research (R&D) using the Borg and Gall model. The subjects of this study were grade V students of SDN Sembaturagung 02 totaling 29 students in the 2024/2025 academic year. Data collection techniques used test techniques (pretest-posttest) and non-tests in the form of observation, interviews, questionnaires, and documentation. The results of this study indicate that the development of interactive media Articulate Storyline 3 is effective in improving the science learning outcomes of grade V students of SDN Sembaturagung 02 Pati Regency. This is evident from the results of the feasibility test obtained by the percentage of assessment by material experts, namely 90.20% and media experts 92.50% with the criteria "very feasible". The effectiveness of the Articulate Storyline 3 media is proven by the average increase in posttest results with the results of the N-gain test of 0.50 which is in the moderate category. Teachers and students gave very positive responses to the distributed questionnaire. Based on these results, it shows that the interactive media Articulate Storyline 3 is effective in improving student learning outcomes and is feasible and useful for use in science learning on the material of the structure of the earth's layers in class V SDN Sembaturagung 02