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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 216 Documents
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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.
Adaptability of Artificial Intelligence to Indigenous Knowledge of Agricultural Practices by Local Farmers in North Central, Nigeria S. A. Busari; H. S. Banuso; Abdulrauf Tosho
International Journal of Natural Science and Engineering Vol. 8 No. 2 (2024): July
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v8i2.94121

Abstract

The paper was aimed at identifying the Adaptability of Artificial Intelligence (AI) to Indigenous Knowledge of Agricultural practices by Local Farmers in North central, Nigeria. Towards this end 350 traditional agricultural consisting of 238 males and 112 females practitioners were selected across the states of the region, including the Federal Capital Territory (FCT), by means of sheer random sampling technique three research questions were raised concerning the farmers attitude towards the integration of AI potential impacts on the sustainability of their agricultural practices. The research instrument was titled “Attitude of indigenous agricultural practitioners to the adaption of Artificial Intelligence (AI) questionnaire”, Which was structured. Results indicated that, although the agricultural practitioners had positive attitude towards AI, there is a critical need for culturally sensitive approaches. The study also revealed the importance of tailoring AI solutions that align with the unique needs and values of various North Central Nigeria indigenous communities. Furthermore, there should be collaborative efforts among technologists, anthropologists and local agricultural practitioners for the purpose of designing AI systems that enhance indigenous knowledge in agricultural practices. It was recommended that the government should encourage active involvement of indigenous agricultural practitioners in the design, implementation and evaluations of AI integration initiatives, so as to ensure that AI solutions align with local needs and preference within the cultural contexts. Furthermore, the government should carry out robust monitoring and evaluation mechanisms to assess the impact of AI integration on indigenous knowledge systems, perceptions and sustainability. These include collecting relevant data, soliciting feedback from stakeholders and adapting strategies based on findings.
Media Audiovisual Desa Bali Aga Tenganan Berbasis Tri Hita Karana pada Materi Budaya Daerahku Ni Made Dyah Permata Setyawati Dewi; Anak Agung Gede Agung; Made Vina Arie Paramita
International Journal of Natural Science and Engineering Vol. 8 No. 2 (2024): July
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v8i2.95769

Abstract

Urgensi hasil belajar siswa yang rendah diakibatkan oleh kurangnya minat belajar siswa. Guru masih menggunakan cara konvensional dalam memberikan materi Pelajaran. Tujuan penelitian ini yakni menganalisis efektivitas media audiovisual Desa Bali Aga Tenganan berbasis Tri Hita Karana pada materi budaya daerahku kelas V. Jenis penelitian ini merupakan penelitian pengembangan dengan model ADDIE yang terdiri dari tahap analyze (analisis), design (perancangan), development (pengembangan), implementation (implementasi) dan evaluation (evaluasi). Subjek penelitian ini yakni siswa kelas V sebanyak 28 siswa.  Metode dan instrumen pengumpulan data yakni berupa angket/kuesioner dan tes pilihan ganda. Teknik analisis data yang digunakan yakni analisis deskriptif kuantitatif, analisis deskriptif kualitatif, dan analisis statistik inferensial. Hasil peneilitian menunjukkan nilai thitung (5,676) > ttabel (1,703), sehingga H0 ditolak dan H1 diterima. Maka  dapat disimpulkan bahwa produk media audiovisual Desa Bali Aga Tenganan Berbasis Tri Hita Karana efektif untuk diterapkan pada materi budaya daerahku kelas V. Diharapkan dengan adanya penelitian ini dapat menjadi bahan kajian bagi guru bahwa pembelajaran di sekolah dasar dapat diintegrasikan dengan kebudayaan bali dan konsep Tri Hita Karana.
Media E-Komik Berbasis Kontekstual untuk Meningkatkan Keterampilan Literasi pada Siswa Kelas VI Sekolah Dasar Luh Dian Mahayani; I Made Citra Wibawa; Wayan Eka Paramartha
International Journal of Natural Science and Engineering Vol. 8 No. 2 (2024): July
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v8i2.95771

Abstract

Keterampilan literasi merupakan kemampuan dasar yang harus dimiliki oleh siswa agar mampu mencapai tujuan pembelajaran melalui pengalaman langsung. Namun sayangnya kegiatan seperti kegiatan literasi yang mampu meningkatkan keterampilan literasi masih bersifat konversional. Kegiatan literasi belum dilengkapi dengan fasilitas dan media yang mengakomodasi gaya belajar siswa. Berdasarkan permasalahan tersebut maka dirasa perlu untuk mengembangkan media pembelajaran berbasis pendekatan kontekstual  untuk mempermudah siswa memahami materi serta melibatkan siswa dalam pembelajaran. Penelitian pengembangan ini menggunakan model pengembangan ADDIE yang terdiri dari tahapan analisis, perancangan, pengembangan, implementasi, dan evaluasi. Metode pengumpulan data menggunakan kuisoner, lembar validisasi instrument dan uji produk, dan test essay. Pengembangan media ini berupa media digital yaitu media E-Komik Berbasis Pendekatakan Kontekstual Untuk Meningkatkan Keterampilan Lterasi Pada Siswa Kelas VI SD telah diuji validitas, kepraktisan, dan efektivitasnya sebelum dapat digunakan di kelas sebagai media bacaan kegiatan literasi. Hasil uji menunjukkan bahwa media e-komik berbasis pendekatan kontekstual layak dan praktis digunakan saat menerapkan kegiatan literasi di kelas. Media e-komik berbasis pendekatan kontekstual fektif meningkatkan keterampilan literasi. Oleh sebab itu, dapat disimpulkan bahwa media e-komik berbasis pendekatan kontekstual yang dikembangkan layak, praktis, dan efektif digunakan dalam meningkatkan keterampilan literasi siswa.
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.
Kinetics of Solvent Free Microwave Extraction from Amomum cardamomum: Comparison First and Second Order Models Variyana, Yeni; Mega Arum Ariyani; Iyappateya Gelegar
International Journal of Natural Science and Engineering Vol. 9 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v9i1.68623

Abstract

The global demand for essential oil from Amomum cardamomum continues to rise due to its applications in the food, pharmaceutical, and cosmetic industries. Conventional extraction methods such as hydrodistillation face efficiency limitations due to prolonged processing times and potential thermal degradation of active compounds. This study aims to investigate the extraction kinetics of cardamom seed oil using the Solvent-Free Microwave Extraction (SFME) method and to compare the suitability of first-order and second-order kinetic models. This experimental laboratory research used cardamom seeds sourced from local farmers in Lampung. The extraction process was conducted with microwave power variations of 300, 450, and 600 W over durations ranging from 15 to 90 minutes. The oil yield was measured directly, and the data were analyzed using Microsoft Excel Solver to calculate the extraction rate constants (k₁ and k₂), saturation concentration (Ys), determination coefficient (R²), and root mean square error (RMSE). The results showed that 450 W microwave power produced the highest yield, with an R² of 0.9902 and an RMSE of 0.0851. The first-order kinetic model was found to best represent the extraction process compared to the second-order model. One advantage of this model is its simplicity in explaining how oil yield changes with varying extraction rates over time. In conclusion, SFME is an efficient and environmentally friendly green technology with strong predictive capabilities for extraction kinetics. The implications of this research provide a scientific basis for the sustainable optimization of essential oil production from tropical plants.
Interactive Digital Comic Learning Media Based on Literacy in Social Studies Content for Elementary School Students Wijayanti, Ni Made Nur Adi; Wulandari, I Gusti Agung Ayu; Sutyaningsih, Anak Agung Ayu Dewi
International Journal of Natural Science and Engineering Vol. 9 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v9i1.94360

Abstract

This research was motivated by the low interest and understanding of students in the topic Exploring Countries and ASEAN Cooperation in sixth-grade Social Studies, which is due to the limited availability of engaging and interactive learning media. The aim of this study was to develop and analyze a literacy-based interactive digital comic as a learning medium, and to examine its feasibility, students' responses, and its effectiveness. The development model used was the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The research subjects were 23 sixth-grade students. Data collection methods included observation, interviews, questionnaires, and tests. The instruments used were questionnaire sheets and multiple-choice tests. Data analysis techniques were conducted using both descriptive qualitative and quantitative approaches. The results showed that the value of t obtained was greater than the t table (2.839 > 0.914), indicating that the literacy-based digital comic on exploring countries and ASEAN cooperation is effective in helping students achieve scores above the Minimum Mastery Criteria (KKTP). The media was also effective in improving students’ understanding of the Social Studies material. The implication of this research is that literacy-based interactive digital comics can serve as an innovative alternative medium to support meaningful and enjoyable Social Studies learning.
APOS Theory-Based E-LKPD to Improve Adaptive Reasoning of Fourth Grade Elementary School Students Saraswati, Gusti Ayu Hanny Kurnia; Agustika, Gusti Ngurah Sastra; Margunayasa, I Gede
International Journal of Natural Science and Engineering Vol. 9 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v9i1.95323

Abstract

Although mathematics learning at the Elementary School level has undergone various innovations, many students still have difficulty understanding mathematical concepts. To overcome this problem, a learning media is needed to stimulate students' cognitive activities, such as E-LKPD (Electronic Student Worksheet) based on APOS Theory (Action, Process, Object, Schema), which emphasizes the stages of students' mathematical thinking development. This study aimed to analyze the effectiveness of E-LKPD based on APOS theory (Action, Process, Object, Schema), which is valid, practical, and effective in improving students' adaptive reasoning. The development model used is the ADDIE model. The subjects of this study were 30 fourth-grade students. The trial subjects included lecturers, teachers and students. The data collection methods and instruments used were interviews, observations, questionnaires and tests. Data analysis techniques included quantitative, qualitative and inferential descriptive analysis. The results of this study indicate that E-LKPD media based on APOS theory effectively improves students' adaptive reasoning on mathematical material, picture patterns, and number patterns in fourth-grade students. Based on APOS theory, this study implies that E-LKPD can be an alternative digital learning media that supports meaningful learning and the development of high-level thinking skills from an early age.

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