CHANGES IN JUNIOR HIGH SCHOOL STUDENTS’ ENVIRONMENTAL LITERACY FOLLOWING PJBL-STEM IMPLEMENTATION THROUGH A WATER FILTRATION PROJECT

Yuanda Purnamasari, Hari Wisodo, Ferdi Dwi Sagitha

Abstract


This study aimed to examine changes in junior high school students’ environmental literacy following the implementation of Project-Based Learning integrated with STEM (PjBL-STEM) through a water filtration project. This quantitative study employed a pre-experimental one-group pretest-posttest design involving 31 seventh-grade students at SMPN 5 Malang. Data were collected using ecological knowledge and cognitive skills tests, an attitude questionnaire, and observation sheets. The three-session intervention involved investigating water pollution, designing, building, testing filtration devices, and presenting findings. Data were analyzed using descriptive statistics, the Shapiro-Wilk normality test, paired-samples t-test, and normalized gain (N-Gain). Results showed average scores increased from 73.48 to 89.81, with an overall N-Gain of 0.49 (moderate). N-Gains for ecological knowledge, cognitive skills, and environmental attitudes were 0.58, 0.44, and 0.47, respectively. These findings indicate improved environmental literacy. However, lacking a control group, improvements cannot be attributed solely to PjBL-STEM. The project provided contextual learning connecting scientific concepts with practical environmental problem-solving.


Keywords


environmental literacy; PjBL-STEM; water pollution

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DOI: https://doi.org/10.29100/eduproxima.v8i4.11268

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