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PENDIPA Journal of Science Education
Published by Universitas Bengkulu
ISSN : 20869363     EISSN : 26229307     DOI : -
Core Subject : Science, Education,
Chemistry Education Mathematics
PENDIPA Journal of Science Education is a peer-reviewed, open-access journal covered all aspect of science and science education. PENDIPA journal welcomes the submission of scientific articles related to mathematics, physics, chemistry, biology, and its educational implementation in a school, higher education and other educational institution. We encourage scientist, lecturer, teacher and student to submit their original paper to the journal. PENDIPA journal is published by Graduate School of Science Education - University of Bengkulu, three times a year on February, June and October
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Articles 566 Documents
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ANALISIS PERTANYAAN PADA BUKU TEKS IPA SMP KURIKULUM MERDEKA BERDASARKAN QUESTION CATEGORY SYSTEM FOR SCIENCE (QCSS) PADA KONSEP GERAK DAN GAYA Afia, Kholifa Nur; Hodijah, Siti Romlah Noer; Rohimah, Rt. Bai
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.775-780

Abstract

This study aimed to analyze the classification and distribution of questions in two Grade VII science textbooks under the Merdeka Curriculum on the topic of motion and force, published by Kemendikbudristek (2021) and Erlangga. The research employed a qualitative method with a content analysis approach, focusing on categorizing questions based on the Question Category System for Science (QCSS), which distinguishes four levels of thinking skills: cognitive memory, convergent, divergent, and evaluative. The data consisted of 103 questions identified from both textbooks and were supported by preliminary interviews with junior high school science teachers. The findings indicate that both textbooks consistently place convergent thinking as the dominant category, with 70% in Kemendikbudristek and 71.83% in Erlangga. However, significant differences emerge in higher-order thinking skills: the Kemendikbudristek textbook emphasizes divergent questions (61.53%) that encourage creativity and idea exploration, while the Erlangga textbook prioritizes evaluative questions (77.77%) that strengthen critical reasoning and decision-making. These findings reveal different pedagogical orientations, with Kemendikbudristek focusing more on fostering creativity and exploration, while Erlangga emphasizes critical thinking skills. In conclusion, both textbooks are relevant in fostering convergent thinking skills, yet a balanced proportion of divergent and evaluative questions is needed to comprehensively support students’ critical, creative, and scientific thinking in accordance with the demands of 21st-century learning.
Penerapan Model Pembelajaran Inquiry Berbantuan Media Handout Untuk Meningkatkan Hasil Belajar Siswa Pada Materi Struktur Atom Kelas X SMA Napitupulu, Even; Simanjuntak, Hendra; Manurung, Hisar Marulitua
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.764-768

Abstract

This study aims to determine the effect of implementing the inquiry learning model assisted by handout media to improve student learning outcomes in atomic structure material for class X of SMA Negeri 1 Girsang Sipanganbolon. The type of research used is a quasi-experimental study with a pretest-posttest control group design. The research subjects consisted of two classes, namely the experimental class that received learning with inquiry learning models assisted by handout media and the control class that received conventional learning. The research instrument was a learning outcome test given before and after treatment. Data were analyzed using t-test and N-Gain calculations. The results showed that the average pretest scores of both classes were relatively the same. After learning, the average post-test score of the experimental class increased higher than the control class. The average N-Gain score of the experimental class was at 54% in the quite effective category, while the control class was at 21% in the ineffective category. The results of the t-test showed a significance value of p <0.05, which means there was a significant difference between the learning outcomes of the two classes. Thus, it can be concluded that the application of the inquiry learning model assisted by handouts improves student learning outcomes in atomic structure.
Peralihan Bahan Bakar Cofiring Batubara - Biomassa untuk Mengurangi Dampak Lingkungan: Studi Kasus PLTU Bukit Asam, Sumatera Selatan Widanti, Feraliza; Boedoyo, M. Sidik; Murtiana, Sri
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.781-789

Abstract

This study explores the implementation of coal and biomass co-firing at the Bukit Asam Power Plant in South Sumatra as a strategy to reduce the environmental impact of coal usage. Indonesia's coal resources are estimated to reach 104 billion tons, with domestic production in 2010 amounting to 240 million tons. The majority of coal is used for electricity generation, but global demand has experienced fluctuations, with declines in developed countries but significant growth in Asian countries. Coal, as a fossil fuel, has negative impacts on health and the environment, prompting the search for cleaner solutions like co-firing. Co-firing is the process of burning a mixture of coal and biomass, aimed at reducing greenhouse gas and pollutant emissions. The Bukit Asam Power Plant utilizes various types of biomass, such as rice husks and palm oil waste, with the appropriate biomass ratio for operational efficiency. This research shows that co-firing can significantly reduce CO₂, SO₂, and NOₓ emissions, as well as provide local economic benefits by empowering communities through biomass utilization. These findings are relevant to Indonesia's energy and environmental policies, supporting the transition towards more sustainable energy, and providing recommendations for policymakers in developing climate change mitigation strategies in the energy sector.
Pengaruh Kombinasi Penggunaan Pestisida Nabati Daun Langsat (Lansium domesticum) dan Daun Mimba (Azadirachta indica A.Juss) Terhadap Intensitas Serangan Serangga Hama Pada Tanaman Sawi Hijau (Brassica juncea L.): - Halefi, Adinda Jihan; Lumowa, Sonja Vera Tineke; Herliani; Maasawet, Elsje Theodora
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.790-793

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh kombinasi ekstrak daun langsat (Lansium domesticum) dan daun mimba (Azadirachta indica A. Juss) terhadap intensitas serangan serangga hama pada tanaman sawi hijau (Brassica juncea L.), serta menentukan konsentrasi yang paling efektif. Penelitian dilakukan secara eksperimental menggunakan Rancangan Acak Kelompok (RAK) dengan lima perlakuan (kontrol, konsentrasi 15%, 30%, 45%, dan 60%) masing-masing lima ulangan, sehingga total terdapat 125 tanaman sampel. Aplikasi pestisida nabati dilakukan mulai umur tanaman 7 hari dan diulang dua kali seminggu. Data intensitas serangan hama dianalisis menggunakan ANOVA, dilanjutkan dengan uji Beda Nyata Terkecil (BNT) pada taraf 1%. Hasil penelitian menunjukkan bahwa pemberian kombinasi ekstrak daun langsat dan daun mimba berpengaruh nyata terhadap penurunan intensitas serangan hama pada semua waktu pengamatan. Konsentrasi 60% menghasilkan penurunan intensitas serangan paling signifikan dibandingkan perlakuan lain, dengan rata-rata intensitas serangan pada kategori ringan. Disimpulkan bahwa kombinasi ekstrak daun langsat dan daun mimba berpotensi sebagai pestisida nabati efektif dan ramah lingkungan dalam mengendalikan hama pada tanaman sawi hijau.
Pengembangan Sistem Digital Image Colorimetry (DIC) Untuk Pemantauan Polutan Nitrogen Di Perairan Mulia Ramadhani, Adella; Dono Wilopo, Mukti; Johan, Yar; Iresta Wardani, Firdha; Firdaus, M. Lutfi
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.794-800

Abstract

The presence of ammonia in waters needs to be monitored because of its toxic nature, especially in the form of free ammonia (NH₃). High concentrations of free ammonia can disrupt the balance of aquatic ecosystems, reduce dissolved oxygen levels, inhibit the growth of aquatic organisms, and even cause mass mortality in fish and other biota. The purpose of this study is to build the Digital Image Colorimetry system for detecting ammonia and assess the accuracy of the DIC method compared to the well-known established spectrophotometric method. Analysis from 5 locations of saline water, salinity and pH levels were still within normal limits, ranging from 33-34 ppt for salinity, while pH is 7.5-7.9. The ammonia content at the sampling point was still considered safe, in accordance with the quality standard (0.3 ppm). The results of ammonia concentration measurements using the DIC method and the spectrophotometric method show a neglegible level of difference and have an accuracy value above 90%. These findings indicate that DIC can be used as an alternative method for measuring ammonia, especially for rapid analysis in the field.
The PENGARUH METODE LEARNING BY DOING TERHADAP KEMAMPUAN PEMECAHAN MASALAH PADA MATERI GERAK DAN GAYA PADA KURIKULUM MERDEKA Akbar, Rizki; R. Ahmad Zaky El Islami; Annisa Novianti Taufik
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.801-806

Abstract

This study aims to determine the effect of the learning by doing method on students' problem-solving abilities on the material of motion and force in the Merdeka curriculum. The learning-by-doing method was chosen because it emphasizes learning through direct experience, which is expected to increase students' active involvement and problem-solving skills. This study used a quasi-experimental design with the Pretest-Posttest Nonequivalent Control Group Design approach, involving two classes of junior high school students, namely the experimental class using the learning by doing method and the control class using the lecture method. The research instruments consisted of a problem-solving ability test in essay form, observation sheets, and student response questionnaires. The results showed that the learning by doing method had a significant effect on improving students' problem-solving abilities according to the independent sample t-test, producing a significance value of 0.01 (<0.05), which indicated that H0 was rejected and H1 was accepted.
Penanganan Dampak Abu Vulkanik Letusan Gunung Lewotobi Terhadap Operasi Penerbangan Fitria, Rosi; Asep Adang Supriyadi; Syachrul Arief; Dangan Waluyo
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.813-825

Abstract

Volcanic ash poses a serious threat to aviation due to its abrasive nature and its tendency to melt at high temperatures, as evidenced by the 1982 British Airways incident at Mount Galunggung. The eruption of Mount Lewotobi from November 7 to 18, 2024, caused ash dispersion that disrupted operations at 13 airports, resulting in the cancellation of hundreds of domestic flights and dozens of international flights. This study employs a qualitative descriptive method, utilizing secondary data, to evaluate how the impacts of the eruption on aviation were managed. The results show that the response was carried out effectively in accordance with Regulation No. PM 95 of 2018, with no serious incidents reported. This was achieved through coordinated dissemination of VONA, VAA, and SIGMET reports, as well as the issuance of ASHTAM and NOTAM. Recommendations are focused on enhancing coordination, strengthening monitoring, and updating aviation operational procedures.
Perapuhan Uranium dengan Metode Hydride–Dehydride: Meningkatkan Efisiensi Bahan Bakar Nuklir dalam Mendukung Transisi Energi Sakina, Zafira Naja; Ardyanto, Fakhriyan; Supriyadi, Imam; Santoso, Budi
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.836-843

Abstract

The Hydride–Dehydride (HDH) method is a critical technology in uranium processing, capable of improving the efficiency and quality of nuclear fuel through a more precise embrittlement process compared to conventional techniques. This technology ensures uniform particle size and minimizes material loss during fabrication. This study was conducted using a literature review approach, supported by experimental data obtained during a 2022 internship at the Research Center for Nuclear Fuel Cycle and Radioactive Waste Technology (PRTDBBLNR). The focus of the investigation was the characterization of uranium–molybdenum (U-Mo) alloy before and after the HDH treatment process. The results indicate that heat treatment at 500 °C for 5 hours followed by annealing significantly increases the hardness of the U-Mo alloy. A phase transformation was also observed, indicated by the presence of α-U in all post-treatment samples. Nevertheless, the density of the alloy showed no substantial change. The HDH process successfully produced high-purity U-Mo powder at various molybdenum concentration levels. However, increasing Mo content resulted in lower powder density. The morphology of U-7Mo powder exhibited flake-like shapes with a rough surface, which is favorable for further fabrication in advanced fuel element production. Overall, these findings reinforce the relevance and significant potential of HDH technology in supporting advanced nuclear reactor fuel production and strengthening national nuclear energy security in a sustainable manner.The Hydride–Dehydride (HDH) method represents an important innovation in uranium processing to improve the efficiency and quality of nuclear fuel. This technology enables a more precise embrittlement of uranium compared to conventional methods such as milling and crushing, resulting in more uniform particle size and reduced material loss throughout the process. This study adopts a literature-based approach supported by practical work conducted at the Center for Research on Nuclear Fuel Cycle Technology and Radioactive Waste Management (PRTDBBLNR) in 2022, in order to evaluate the effectiveness of HDH in strengthening nuclear energy security in Indonesia. The analysis shows that HDH improves the microstructural quality of uranium and enhances processing yield by minimizing waste generation. These advantages highlight the high relevance of HDH technology in supporting the development of Generation IV nuclear reactors, which emphasize efficiency and sustainability within the fuel cycle. However, its implementation in Indonesia still faces challenges, particularly in terms of industrial infrastructure readiness, safety regulations, and nuclear material protection. Therefore, strategic policies are required to promote further research and technological investment, as well as strong collaboration between academia, government, and industry. Integrating HDH into the national uranium processing roadmap has the potential to establish this technology as a key pillar in ensuring a sustainable nuclear fuel supply and enhancing Indonesia’s energy security in the future.
Pengaruh Kombinasi Ekstrak Daun Serai Wangi (Cymbopogon nardus) dan Daun Jambu Air (Syzygium samarangense) terhadap Intensitas Serangan Serangga Hama pada Tanaman Tomat Ceri (Solanum lycopersicum) Christin, Winda Agata; Lumowa, Sonja Vera Tineke; Akhmad; Nasution, Ruqoyyah
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.807-812

Abstract

Serangan serangga hama merupakan salah satu faktor penyebab rendahnya produktivitas tomat ceri. Penggunaan pestisida sintetis memang efektif, namun memiliki dampak negatif terhadap lingkungan dan kesehatan manusia. Penelitian ini bertujuan untuk menganalisis pengaruh kombinasi ekstrak daun serai wangi dan daun jambu air terhadap intensitas serangan serangga hama pada tanaman tomat ceri serta menentukan konsentrasi paling efektif. Penelitian menggunakan rancangan acak lengkap (RAL) dengan lima perlakuan (kontrol, 30%, 45%, 60%, dan 75%) dan lima ulangan. Pengamatan dilakukan pada 12, 19, 26, 33, 40, dan 47 hari setelah tanam (HST). Hasil menunjukkan bahwa kombinasi ekstrak kedua tanaman berpengaruh signifikan dalam menekan serangan hama. Perlakuan 75% merupakan konsentrasi paling efektif dengan intensitas serangan hama terendah pada seluruh periode pengamatan. Dengan demikian, kombinasi ekstrak daun serai wangi dan jambu air dapat digunakan sebagai alternatif pestisida nabati ramah lingkungan.
Pengaruh Edukasi Bahan dan Urgensi Penekanan Waktu terhadap Keputusan Pembelian Skincare "Sofia Skin Solution" pada Live Commerce dimediasi Perceived Value Shofiyah; Prasetiyo, Andri; Ahmar, Nurmala; Wirabrata, I Gede Made
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.826-835

Abstract

Live streaming is changing the digital marketing landscape, especially in the skincare industry. This research aims to examine the influence of ingredients education and time pressure on consumer purchasing decisions on “Sofia Skin Solution” products, with perceived value as a mediating variable. The research was conducted with a quantitative approach through a survey of 200 respondents active in the live streaming session. Data were analyzed using Structural Equation Modeling (SEM) based on Partial Least Squares (PLS). Results showed that ingredient education positively influenced perceived value (T-value = 6.104; p = 0.000), as did time pressure (T-value = 6.339; p = 0.000), with time pressure showing a slightly more dominant influence. Perceived value alone exerted the strongest influence on purchasing decisions (T-value = 5.512; p = 0.000), and was shown to fully mediate the relationship between ingredient education and purchasing decisions, as well as partially mediating the influence of time pressure on purchasing decisions. The direct effect of content education on purchasing decisions is not statistically significant, but is at the threshold, which crucially indicates the role of other factors such as brand image and host credibility. Findings confirm the importance of live streaming scripts that balance concise product information with short promotions to build trust and enthusiasm. Managerial implications suggest companies design short ingredient demonstrations followed by short offers to maximize conversions on live commerce platforms.

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