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All Journal DIDAKTIKA JKM: Jurnal Kemitraan Masyarakat
Sintia Salam
Universitas Negeri Makassar
Education Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Public Health Social Sciences Other

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Inovasi Teknologi Tepat Guna: Pengembangan Ecosmart Oyster sebagai Alat Pembuka Tiram Ramah Lingkungan Rifda Nur Hikmahwati Arif; Sintia Salam; Nabila Nasir; Melda Longde'; Salma Samputri
Jurnal Kemitraan Masyarakat Volume 4 Number 2 Desember 2025
Publisher : Jurusan Pendidikan IPA Fakultas MIPA Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/jkm.v4i2.80873

Abstract

The conventional process of opening oyster shells using manual knives has various limitations, including low work efficiency, high risk of worker injury, and damage to oyster meat integrity that impacts the economic value of the product. This development activity aims to design and implement an appropriate technology-based oyster opener that is efficient, safe, and sustainable. The implementation method adopts a Research and Development approach through five systematic stages: needs analysis through literature study and field observation; design based on ergonomic principles and lever mechanics; prototype fabrication using local teak wood and mild steel materials; technical performance testing; and evaluation and design finalization. The Ecosmart Oyster prototype was designed applying first-class lever principles with load-fulcrum-force configuration that produces a mechanical advantage of 3.5. Testing results on 50 oyster samples showed significant improvements in opening time efficiency of 50 percent with an average duration of 15 seconds per unit, reduction of meat damage up to 70 percent with 90 percent producing intact high-quality products, and zero work injury incidents during the testing process. This tool offers an innovative solution that increases the productivity of local oyster processors, minimizes occupational safety risks, and supports the sustainability of the fisheries industry through the use of environmentally friendly materials.
Implementing the Arduino Uno-Assisted Discovery Learning Model to Improve Students' Critical Thinking Skills and Learning Activities in Dynamic Electricity Nur Indah Sari; Riska Wahyuni; Melda Longde; Sintia Salam; Jaya Hasan; Fandi Ahmad
DIDAKTIKA Vol. 4 No. 2 (2026): October (2026)
Publisher : Lombok Institute

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Abstract

This classroom action research examined changes in the critical-thinking performance and learning activities of 37 Grade IX-B students during an Arduino Uno-assisted Discovery Learning unit on dynamic electricity. The study was conducted in two cycles, each comprising three observed instructional meetings followed by a cycle-end test. Critical thinking was assessed with a test, and learning activities were assessed with an observation sheet. From Cycle I to Cycle II, the distribution of critical-thinking scores shifted toward the high and very-high categories: the proportion in the very-high category increased from 10.81% to 21.62%, the proportion in the high category increased from 51.35% to 59.46%, and no students remained in the low category. The mean observed learning-activity score increased from a recalculated 50.71% in Cycle I to 80.05% in Cycle II. These within-class changes coincided with instructional revisions after Cycle I and indicate improved engagement and critical-thinking performance across the two cycles. Because the study involved one class without a comparison group or pre-action test, the findings should be interpreted as cycle-to-cycle changes rather than as a causal effect attributable solely to the intervention.
Co-Authors Arif, Rifda Nurhikmahwati Fandi Ahmad Jaya Hasan Melda Longde Melda Longde' Nabila Nasir Nur Indah Sari Riska Wahyuni Salma Samputri