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Ratman Ratman
Universitas Tadulako
Biochemistry, Genetics & Molecular Biology Chemistry Education Mathematics Other

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Journal : Media Eksakta

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Analisis Kemampuan Berpikir Kritis Siswa Tentang Materi Larutan Elektrolit dan Non Elektrolit Regina Kristia Ningrum; Ratman Ratman
Media Eksakta Vol 17 No 2 (2021)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (304.647 KB) | DOI: 10.22487/me.v17i2.1075

Abstract

The purpose of this study was to describe students' critical thinking skills on the material of Electrolyte and Non-Electrolyte Solutions in class X SMA Negeri 6 Sigi. This type of research was descriptive quantitative. In the learning process, the teacher used Google Drive and the Whatsapp application as online learning media. The data collected was the form of critical thinking ability test results that obtained through giving questions in the form of online essays. Furthermore, the data were collected and analyzed based on indicators of critical thinking skills which including interpretation, analysis, inference, and evaluation. The results of data analysis on critical thinking skills of students of class X MIA 1 on the indicators of interpretation, analysis, inference, and evaluation were 51%, 41%, 42%, and 47%, respectively. The average result for all indicators of critical thinking ability of students in class X MIA 1 was 45%. For class X MIA 2, 51%, 39%, 36% and 41% respectively. Overall, the results of the critical thinking skills of class X student was 43.5%. This result shows that the critical thinking ability of students in the class X SMA Negeri 6 Sigi was in a low category
Analisis Kadar Kalsium (Ca) pada Tulang Ikan Sidat (Anguilla marmorata) di Danau Poso Grace Oguu; Ratman Ratman
Media Eksakta Vol 18 No 1 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.45 KB) | DOI: 10.22487/me.v18i1.1504

Abstract

Fish bones are one of the solid wastes from fish processing. Utilization of fish bones into flour can be an alternative in tackling fish bones. The purpose of this study was to determine the level of calcium (Ca) in the bones of eel (Anguilla marmorata) in Poso Lake. Calcium levels were determined using complexometric titration. The results showed that the calcium levels in eel bones were 31.2426 mg/100g, 28.4568 mg/100g and 26.052 mg/100g.
Co-Authors Grace Oguu Hayatul Islam Hety E. Panambulo Indah Lestari Malahat Kasmudin Mustapa Minarni Rama Jura Nurafni Nurafni Nurasiah Nurasiah Nurida Nurida Nurida Nurida Regina Kristia Ningrum