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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Journal of Current Studies in SDGs Journal of Current Studies in SDGs
Abd. Hakim Laenggeng
Tadulako University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Materials Science & Nanotechnology Physics Social Sciences Other

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The Influence of the Problem-Based Learning Model on Metacognitive Knowledge and Science Learning Outcomes Gamar B. N. Shamdas; Abd. Hakim Laenggeng; Abdul Ashari; Rizka Fardha
Jurnal Penelitian Pendidikan IPA Vol 10 No 3 (2024): March
Publisher : Postgraduate, University of Mataram

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Abstract

Metacognitive knowledge refers to what is known about memory function and the strengths and weaknesses of one's own cognition. This research aims to describe the influence of the problem-based learning model on the metacognitive knowledge and learning outcomes of class IX junior high school students. The research was carried out on Class IX students of Palu City Middle School, the entire population of Class IX consisted of three classes with a total of 45 students. Two classes were used as samples determined based on purposive sampling. Metacognitive knowledge data was obtained through questionnaires and learning outcome data through essay and multiple choice tests. Data analysis used an independent t-test with the help of SPPS version 25.0. The results showed that metacognitive knowledge with conventional learning was significantly lower than the PBL class with a gain of t(25) = 9.289, p < 0.000 and learning outcomes in the conventional class were significantly lower than the PBL class with a gain of t(25) = 4.520, p < 0.000. The conclusion of this research is that there is an influence of the problem-based learning model on the metacognitive knowledge and learning outcomes of class IX SMP students
Analysis of Microplastics in the Digestive Tracts of Mackerel Tuna (Euthynnus affinis) and Skipjack Tuna (Katsuwonus pelamis) for SDG 14 Masriani Masriani; Abd. Hakim Laenggeng; Fatmah Dhafir; Aan Febriawan
Journal of Current Studies in SDGs Vol. 2 No. 1 (2026): March
Publisher : Sekolah Tinggi Agama Islam Sabilul Muttaqin Mojokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63230/jocsis.2.1.157

Abstract

Objective: Marine ecosystems are increasingly threatened by microplastic pollution, which can accumulate in commercially important fish species and potentially affect human health. This study aimed to identify the characteristics and abundance of microplastics in the digestive tracts of mackerel tuna (Euthynnus affinis) and skipjack tuna (Katsuwonus pelamis) from Boneoge waters, Donggala Regency, and examine the relationship between digestive tract size and microplastic abundance. Method: A quantitative descriptive approach was employed using 30 specimens of each fish species collected from local fishermen. Digestive tract samples were digested using 10% KOH, incubated at 75°C, filtered, and observed under a binocular microscope. Microplastic abundance was expressed as particles per gram of digestive tract weight. Simple linear regression analysis using SPSS 25 was performed to evaluate the relationship between digestive tract size and microplastic abundance. Results: Three microplastic types were identified: film, fragment, and fiber, with film being dominant in both species. Total microplastic abundance reached 3.940 particles/g in mackerel tuna and 3.071 particles/g in skipjack tuna. Regression analysis showed a weak positive relationship between digestive tract size and microplastic abundance (R² = 0.137 and 0.140), suggesting that other environmental and biological factors play a greater role. Novelty: Providing the first baseline data on microplastic contamination in mackerel tuna and skipjack tuna from Boneoge waters, Central Sulawesi, and contributes to SDG 14 (Life Below Water) by strengthening evidence-based efforts to address marine microplastic pollution.
Analysis of Microplastics in the Digestive Tracts of Mackerel Tuna (Euthynnus affinis) and Skipjack Tuna (Katsuwonus pelamis) for SDG 14 Masriani Masriani; Abd. Hakim Laenggeng; Fatmah Dhafir; Aan Febriawan
Journal of Current Studies in SDGs Vol. 2 No. 1 (2026): March
Publisher : Sekolah Tinggi Agama Islam Sabilul Muttaqin Mojokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63230/jocsis.2.1.157

Abstract

Objective: Marine ecosystems are increasingly threatened by microplastic pollution, which can accumulate in commercially important fish species and potentially affect human health. This study aimed to identify the characteristics and abundance of microplastics in the digestive tracts of mackerel tuna (Euthynnus affinis) and skipjack tuna (Katsuwonus pelamis) from Boneoge waters, Donggala Regency, and examine the relationship between digestive tract size and microplastic abundance. Method: A quantitative descriptive approach was employed using 30 specimens of each fish species collected from local fishermen. Digestive tract samples were digested using 10% KOH, incubated at 75°C, filtered, and observed under a binocular microscope. Microplastic abundance was expressed as particles per gram of digestive tract weight. Simple linear regression analysis using SPSS 25 was performed to evaluate the relationship between digestive tract size and microplastic abundance. Results: Three microplastic types were identified: film, fragment, and fiber, with film being dominant in both species. Total microplastic abundance reached 3.940 particles/g in mackerel tuna and 3.071 particles/g in skipjack tuna. Regression analysis showed a weak positive relationship between digestive tract size and microplastic abundance (R² = 0.137 and 0.140), suggesting that other environmental and biological factors play a greater role. Novelty: Providing the first baseline data on microplastic contamination in mackerel tuna and skipjack tuna from Boneoge waters, Central Sulawesi, and contributes to SDG 14 (Life Below Water) by strengthening evidence-based efforts to address marine microplastic pollution.
Co-Authors Aan Febriawan Abdul Ashari Fatmah Dhafir Gamar B. N. Shamdas Masriani Masriani Rizka Fardha