Irawan, Nisya Indriyanti
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Utilization of Cow Dung and Coconut Shell in Making Briquettes With Tapioca Strach Adhesive as Alternative Energy Irawan, Nisya Indriyanti; Meiliyadi, Lalu Ahmad Didik
Jurnal Sains Dasar Vol 13, No 2 (2024): Oktober 2024
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jsd.v13i2.67311

Abstract

This research was conducted with the aim of producing briquettes that have quality in accordance with SNI, with the composition of cow dung and coconut shell materials so that they can be utilized as alternative energy. The core scheme of this research is to test the quality of charcoal, especially its calorific value. By using variables in the form of a mixture of cow dung and coconut shell used, for samples A: 30%, 70%, B: 40%, 60%, C: 50%, 50%, D: 30%, 70. Based on the data obtained, it can be concluded that the mixture that has the optimal value to get the best quality of briquettes is sample D, which is 30% cow dung and 70% coconut shell where the calorific value obtained is 4706 cal/g. Cow dung is very efficient to be used as biobriquettes
Analysis of Student Critical Thinking Skills Improvement Profile through SETS Based Physics E-Book Intervention Integrated with Local Wisdom Irawan, Nisya Indriyanti; Pujianto, Pujianto
Jurnal Ilmiah Pendidikan Fisika Vol 10, No 1 (2026): MARCH 2026
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jipf.v10i1.17643

Abstract

The integration of the SETS (Science, Environment, Technology, and Society) approach within a Physics E-book based on 'Nenggala' local wisdom enables students to bridge scientific concepts with cultural reality, fostering contextual understanding, while the SETS model provides structured stages of investigation that stimulate critical inquiry. The development of this integrated E-book serves as the primary contribution of this research, addressing the significant gap in students' critical thinking skills, particularly in analysis, inference, and evaluation. Employing a Research and Development (R&D) method with the ADDIE model, this study evaluated the media’s effectiveness through a Non-Equivalent Pretest-Posttest Group Design involving 108 grade XI students. The results demonstrate that the E-book is highly feasible and significantly effective; the experimental group utilizing the SETS model achieved the most substantial improvement with an N-gain of 70.9 (high category), markedly outperforming the control group. These findings indicate that SETS-based E-books integrated with local wisdom provide an innovative reference for educators to strengthen the Merdeka Curriculum while fostering meaningful physics learning and higher-order thinking skills.