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All Journal QUANTUM: Jurnal Inovasi Pendidikan Sains
Putriani Putriani
Program Studi S2 Pendikan Kimia, FMIPA Universitas Negeri Makassar
Chemistry Education Physics

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Enhancing High School Students’ Learning Outcomes in Redox Reactions through a Green Chemistry-Based Microscale Experimental Approach Putriani Putriani; Army Aulia; Sugiarti Sugiarti
QUANTUM: Jurnal Inovasi Pendidikan Sains Vol 17, No 1 (2026): April 2026
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/quantum.v17i1.25950

Abstract

Redox reactions are often considered difficult concepts in chemistry learning because students frequently struggle to connect observable phenomena with electron transfer processes. This study aimed to examine the effectiveness of a green chemistry-based microscale experimental approach in improving high school students’ learning outcomes in redox reactions. A quantitative pre-experimental one-group pretest–posttest design was employed involving 30 eleventh-grade science students at SMAN 22 Gowa selected through purposive sampling. Data were collected using a 20-item higher-order thinking skills (HOTS) test consisting of multiple-choice and short-answer questions. The data were analyzed using descriptive statistics, the Shapiro–Wilk test, the Wilcoxon Signed-Rank test, N-gain analysis, and effect size calculation. The results showed that students’ mean scores increased from 52.33 on the pretest to 72.00 on the posttest with a significant difference (p < 0.05). The average N-gain score was 0.41 (medium category), while the effect size was 0.88 (large effect). These findings suggest that green chemistry-based microscale experiments can support safer, more efficient, and meaningful chemistry learning, particularly in schools with limited laboratory facilities.
Co-Authors Army Aulia Sugiarti Sugiarti