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All Journal ANTHOR: Education and Learning Journal Environmental Science Journal (esjo)
Suci permata Sari
Universitas PGRI Palembang
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Physics Social Sciences Other

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Efektivitas Strategi True or False Dalam Meningkatkan Kemampuan Berpikir Kritis pada Pembelajaran IPS di SD Suci permata Sari; Kiki Aryaningrum; Puji Ayurachmawati
ANTHOR: Education and Learning Journal Vol 1 No 2 (2022): Vol 1 No 2. Page: 57 - 133
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (394.961 KB) | DOI: 10.31004/anthor.v1i2.10

Abstract

This research aims to improve critical thinking skills using the True or False strategy in social studies learning in elementary school. The research method used by the researcher is quantitative. Sources of data used by researchers are observations, interviews, essay tests,and documentation. The research data analysis techniques used were normality test, homogeneity test, hypothesis testing, and N-gain test. The subjects used were 30 students from class VA and 30 students from class VB. The results of the research in the experimental class showed that the essay test could improve critical thinking seen from the posttest normality test in the form of Xcount 36.47 while for Xtable 42.557 which was marked normal, the hypothesis obtained was tcount 7.7 while for ttable 2.00172 which means H0 is rejected and Ha is accepted, the N-gain of the experimental class is 60.1 with a good category, the results of observations made by researchers are that students can receive lessons well using the True or False strategy. On the essay sheet in the control class using the lecture method and book media using vidcall, the results of the calculation of the posttest normality test in the form ofXcount 24.45, while for Xtable 42.557 which is marked normal, the N-gain of the experimental class is 46.9% including the low category. It can be concluded that the effectiveness of the True or False strategy can improve students' critical thinking in terms of the experimentalclass experiencing the effectiveness of using the True or False strategy and the control class not being effective because it uses the lecture method.
Analysis Of Hexavalent Chromium Metal Content Of River Water By Flame Atomic Absorption Spectrophotometer Atina Atina; Suci Permata Sari
Environmental Science Journal (esjo) : Jurnal Ilmu Lingkungan 2024: Volume 2 Nomor 2 Juni 2024
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/esjo.v2i2.15725

Abstract

Population growth and intensified human activities have resulted in global environmental conditions experiencing increased risks to water quality. One of the serious threats to water quality is heavy metal contamination, including hexavalent chromium metal (Cr-VI). This study aims to analyze the levels of hexavalent chromium metal (Cr-VI) in river water with an analytical method that is in accordance with SNI 6989.53: 2010, the test method using an atomic absorption spectrometer (SSA)-Nyala. Based on the analysis that has been done on 2 samples (sample A and sample B), the value of hexavalent chromium levels in sample A is 0.035 mg/L and sample B is 0.0127 mg/L. So that the results can be stated that the hexavalent chromium (Cr-VI) levels in the river water are still below the quality standards based on PP RI No. 22 of 2021 concerning the Implementation of Environmental Protection and Management so that it is categorized as safe.
Co-Authors Aryaningrum, Kiki Atina, Atina Ayurachmawati, Puji