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International Journal of Natural Science and Engineering
Published by Universitas Pendidikan Ganesha
ISSN : 26151383     EISSN : 25496395     DOI : -
Core Subject : Engineering,
Engineering
International Journal of Natural Sciences and Engineering (IJNSE) is an independent, quarterly basis online & print version, open access, peer reviewed, non-profit journal that publishes original research, short communications, review articles or essays, and book reviews relevant to Natural Sciences and Engineering. IJNSE is published by the Universitas Pendidikan Ganesha (Undiksha), Indonesia.
Arjuna Subject : -
Articles 8 Documents
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Search results for , issue "Vol. 8 No. 3 (2024): Oktober" : 8 Documents clear
Animation Videos Development Based on Realistic Mathematics Education to Improve III Grade Fraction Problem-Solving Skills Dewantari, Sherly Agustina; Didith Pramunditya Ambara
International Journal of Natural Science and Engineering Vol. 8 No. 3 (2024): Oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v8i3.93314

Abstract

This study addresses issues related to mathematics learning, particularly on the topic of fractions, which can enhance students' understanding and interest in mathematics learning. The study aims to develop the design and development of an Animation Video product based on Realistic Mathematics Education (RME), evaluate the quality of the Animation Video through expert evaluations, individual tests, and small group tests, and determine the effectiveness of the RME-based Animation Video media. The research follows the ADDIE development model (Analyze, Design, Development, Implementation, Evaluation), with data collected through interviews, questionnaires, and tests. The data analysis techniques used are quantitative descriptive analysis and inferential statistics.The results of the study show that the RME-based Animation Video, developed using Canva and Camtasia, can be accessed via YouTube/Google Drive links. Expert evaluations yielded scores of 94.64% for content experts, 92.5% for instructional design experts, and 96.15% for media experts. Individual testing with three students yielded a score of 91.66%, while small group testing involving nine students resulted in a score of 92.22%, both of which are categorized as excellent. The t-test results show a value of 27.277, which is higher than the t-table value of 2.056 at a 5% significance level with 26 degrees of freedom, thus rejecting H0 and accepting H1, indicating that the average post-test score of students is higher than the average pre-test score. This study demonstrates that the RME-based Animation Video can improve students' understanding of the topic of fractions by making abstract concepts easier to grasp. This approach can enhance problem-solving skills and motivate students, making it a valuable tool for teachers and curriculum developers. Future research may explore its impact on other mathematics topics and at different grade levels.
Digital Comic Media Based on Jejaitan Bali Ethnomathematics on Flat Form Material for Class IV Mathematics Students Prabasari, Jhoti; Gusti Ngurah Sastra Agustika
International Journal of Natural Science and Engineering Vol. 8 No. 3 (2024): Oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v8i3.93319

Abstract

Mathematics is often considered an abstract subject and difficult for elementary school students to understand, especially flat material. The lack of interesting and contextual learning media makes students less motivated to learn. In fact, mathematics learning can be connected to local culture through an ethnomathematics approach, which can make abstract concepts more meaningful. This research aims to describe the design of digital comic media based on Jejaitan Bali ethnomathematics, determine the feasibility of digital comic media based on Jejaitan Bali ethnomathematics, and determine the effectiveness of digital comic media based on Jejaitan Bali ethnomathematics on flat material. This development research uses the ADDIE development model. The subjects of this research were fourth grade elementary school students with a total of 31 students. The data collection methods used are interviews, observations, questionnaires and tests. The data analysis used is quantitative and qualitative descriptive analysis, as well as inferential statistical analysis. The main results of this research show that digital comic media based on Balinese jejaitan ethnomathematics is effective in increasing understanding of the concept of flat shapes in fourth grade students. The media developed successfully links mathematical concepts with local culture, so that students understand the material more easily through examples that are familiar in their daily lives.  The implications of this research indicate that the integration of local culture into learning media, such as digital comics based on Balinese jejaitan ethnomathematics, can be an effective strategy for increasing understanding of basic mathematics concepts in elementary schools. By utilizing cultural elements that are close to students' lives, learning becomes more contextual, meaningful and interesting, thereby increasing students' motivation and active involvement in the learning process.
Instructional Media Adding Blocks Game Knowledge Based on Numeracy in Operations Count Integer Load Mathematics Ni Komang Prema Kumarasari; Anak Agung Gede Agung; I Gede Astawan
International Journal of Natural Science and Engineering Vol. 8 No. 3 (2024): Oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v8i3.93531

Abstract

Learning integer arithmetic operations in elementary schools still faces various challenges, especially in helping students understand concepts concretely. This study aims to develop and analyze the effectiveness of numeracy-based knowledge-enhancing block game learning media in improving students' understanding of integer arithmetic operations. The development model used is the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The subjects of this study were 25 fourth grade students. The data collection methods and instruments used were questionnaires and multiple-choice tests. The data analysis techniques used were qualitative descriptive, quantitative descriptive analysis and inferential statistical analysis. The results of the study showed that the use of this media significantly improved students' understanding of integer arithmetic operations, as evidenced by the increase in test results after the application of the media. In addition, students were more motivated and active in the learning process. The conclusion of this study is that numeracy-based knowledge-enhancing block game media is an effective and innovative learning tool. The implications of this study indicate that this media can be applied in activity-based learning and further developed for various other mathematical concepts.
A HOTS-Based Digital Pop-Up Book on the Human Digestive System Improves Elementary School Students' Critical Thinking Skills Ni Nengah Mery Handayani; I Gede Astawan; Gusti Ayu Putu Sukma Trisna
International Journal of Natural Science and Engineering Vol. 8 No. 3 (2024): Oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v8i3.95773

Abstract

The low critical reasoning ability of elementary school students shows the weakness of the learning process that encourages students to think at a higher level. This is exacerbated by the lack of use of innovative learning media and learning activities that do not demand active student involvement. This study aims to develop and test the feasibility of digital pop-up book learning media on the human digestive system based on HOTS. The type of research used is development research with the ADDIE model. The research subjects consisted of 2 material experts, 2 media experts, 2 design experts, 3 teachers, 3 students for individual trials, 9 students for small group trials, 15 control group students, and 23 experimental group students at the implementation stage. Data were collected through questionnaires and tests, using instruments in the form of rating scales and multiple-choice questions. The data analysis techniques used include qualitative and quantitative descriptive analysis. The results showed that the media was considered feasible to use based on the validation of experts and positive responses from teachers and students. The use of this media also proved effective in improving students' critical reasoning skills, which was shown through the difference in results between the control and experimental groups. The conclusion of this study states that HOTS-based digital pop-up book is a feasible, practical, and effective learning medium to be used in elementary schools. The implication is that interactive digital media can be an innovative alternative in developing higher-order thinking skills.
Ethnomathematics-Based Geometry Framework to Improve Students Metacognitive Skills and Mathematical Understanding Ni Kadek Dwi Paramitha; I Made Suarjana; I Nyoman Laba Jayanta
International Journal of Natural Science and Engineering Vol. 8 No. 3 (2024): Oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v8i3.95775

Abstract

Mathematics is often considered difficult because the material is abstract, so the learning process requires media to help students understand concepts more concretely. This study aims to produce an ethnomathematics-based geometry framework with valid, practical, and effective criteria. The type of research used is development research with the ADDIE model. The test subjects involved material and media experts and 32 fifth-grade elementary school students. Data was collected through questionnaires and tests using instruments like questionnaire sheets and test questions. The data obtained were analyzed using qualitative and quantitative descriptive analysis methods. The results showed that the developed framework obtained a decent assessment from material experts, media experts, and small groups of students. In addition, the results of the effectiveness test through hypothesis analysis showed a significant difference between students' metacognitive abilities and mathematical understanding before and after using the media. This indicates that the framework developed is valid, feasible to use, and effective in improving the quality of mathematics learning, especially in geometry materials. This research implies that teachers can utilize the ethnomathematics-based geometry framework as a contextual learning tool, and by the characteristics of students in understanding geometry concepts in grade V elementary school.
Influence of Planting Date on Growth, Yield, Proximate and Mineral Compositions of Groundnut (Samnut 24) Olalekan Oluwaseun ABE; Akindeyi Luwoye; Bolaji Umar Olayinka; Abdulaziz Ayinla
International Journal of Natural Science and Engineering Vol. 8 No. 3 (2024): Oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v9i1.98674

Abstract

Understanding the optimal planting date is essential to maximize agricultural productivity and ensure nutritional quality. This study aimed to analyze the effect of different planting dates on the growth, yield, proximate composition, and mineral composition of selected peanuts (Samnut 24). This study was an experimental field study. The subjects of this study were peanut plants of SAMNUT 24. Yield and yield components, such as number of pods, seeds, seed weight, pod weight, and total yield, were recorded at harvest. Proximate analysis was conducted to determine the content of water, protein, fat, fiber, ash, and carbohydrates, while mineral analysis focused on essential nutrients such as potassium, magnesium, and iron. The findings showed that planting date significantly affected the growth, yield, proximate composition, and mineral content of peanuts (Samnut 24), with advantages for early planting. Early planting during the growing season increases plant height, number of leaves, and leaf area index of peanuts (Samnut 24). In addition, early planting was the optimal planting date for the number of pods, seeds per plant, increase in pod weight, seed weight, and increase in pod and seed yield. Early planting ensures that groundnuts get the required thermal time to optimize yield components and harvest, thus ensuring better productivity and yield efficiency. The optimal planting date is early planting because much higher moisture, fiber, protein, and ash values are obtained from early planted groundnuts.
Automated Wildlife Recognition Using OpenCV for Conservation at Rinjani National Park Handayana, I Gusti Ngurah Yudi; Sudiarta, I Wayan; Setiawan, Budi; Hadi, Islamul; Marzuki, Marzuki; Huda, Lalu Sahrul; Angraini, Lily Maysari; Illahi, Ramadian Ridho
International Journal of Natural Science and Engineering Vol. 8 No. 3 (2024): Oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v8i3.101773

Abstract

This study presents the design and validation of an AI-based camera-trap system for wildlife monitoring at the border of Rinjani National Park, Indonesia. The system uses the YOLOv4 framework integrated with OpenCV to detect long-tailed macaques (Macaca fascicularis) in real-time. A total of 269 annotated images were used, including 202 for training, 17 for validation, and 50 for testing. The model was trained using Google Colaboratory and achieved a detection accuracy of 92.83%. Image pre-processing and labeling were conducted via Roboflow, and the model was optimized for potential deployment on a Raspberry Pi platform. Although physical deployment was not conducted, the system design supports low-power embedded implementation for field use. The results indicate that the proposed method can reliably detect camouflaged and partially occluded monkeys, suggesting its potential for mitigating human–wildlife conflict through smart conservation technology.
A Systematic Review of AI-Powered Tools in English Language Learning for Vocational Students Dewantara, Kadek Andre Karisma; Laksana, I Putu Yoga; Saraswati, Ni Putu Ritra Trees Ari Kartika Hadi
International Journal of Natural Science and Engineering Vol. 8 No. 3 (2024): Oktober
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v9i2.101889

Abstract

Vocational education emphasizes the development of practical skills aligned with industry needs. In today's digital era, English proficiency combined with the ability to adapt to technological advancements such as Artificial Intelligence (AI) is essential. AI-powered tools have begun to transform English language learning by offering personalized, adaptive, and interactive experiences. This systematic review aims to examine and synthesize the characteristics of AI-powered tools and their implementation in English language learning for vocational students, focusing on how these technologies support communication, industry-specific language use, and learner autonomy. This systematic review follows the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines to ensure a comprehensive and transparent review process. Data were gathered through searches in electronic databases including Scopus, ERIC, Google Scholar, and Web of Science using keywords such as “AI in language learning,” “vocational students,” “ESP,” and “English learning technology.” After screening based on inclusion and exclusion criteria, 20 studies published between 2018 and 2024 were selected for analysis. A narrative synthesis was used to extract and organize key themes. The review identified the following characteristics of AI-powered tools used in vocational English education: real-time feedback, adaptive content delivery, speech recognition for speaking practice, and chatbot-based conversation simulation. These tools were mostly applied through mobile apps, web platforms, and LMS integration. The outcomes showed positive impacts on students’ speaking fluency, vocabulary acquisition, motivation, and engagement. AI-powered tools offer significant potential for enhancing English language learning in vocational settings by providing personalized and flexible learning pathways.

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