Pengaruh Penggunaan E-Modul Berbasis PBL pada Materi Pencemaran Lingkungan dalam Meningkatkan Keterampilan Berpikir Kritis Peserta Didik di MTs/SMP
DOI:
https://doi.org/10.35719/vektor.v7i01.210Keywords:
Critical Thinking Skills, Environmental Pollution, Use of E Module, Problem Based LearningAbstract
This study aims to analyse the effect of using a PBL-based e-module on the topic of environmental pollution on the critical thinking skills of eighth-grade students from a private school. This quantitative pre-experimental study employed a One Group Pretest–Posttest design, involving the entire population as a saturated sample of 38 eighth-grade students. Data were collected through a critical thinking skills test administered before and after treatment, then analysed using Normality, Homogeneity, Paired-Samples t-Test, N-Gain, and Simple Linear Regression tests. The results showed a significant increase in the average score from 66.7 (Pretest) to 78.3 (Posttest), with a significance value (2-tailed) of 0.000 (< 0.05) and a t-value of 8.238, greater than the t-table value of 1.685. The N-Gain test produced an average score of 0.6834 (68.34%), categorised as moderate. The use of contextual problems and problem-solving activities in the e-module provided students with opportunities to analyse information, evaluate evidence, and formulate solutions. These findings indicate that the PBL-based e-module has a significant and positive effect on enhancing students' critical thinking skills in environmental pollution and can be considered an effective, contextual, and innovative learning alternative for science education.
Abstrak
Penelitian ini bertujuan untuk menganalisis pengaruh penggunaan e-modul berbasis Problem-Based Learning (PBL) pada materi pencemaran lingkungan terhadap keterampilan berpikir kritis peserta didik kelas VIII dari salah satu sekolah swasta. Penelitian kuantitatif jenis praeksperimen ini menggunakan desain One Group Pretest–Posttest dengan melibatkan seluruh populasi sebagai sampel jenuh, yaitu 38 peserta didik kelas VIII. Data dikumpulkan melalui instrumen tes keterampilan berpikir kritis yang diberikan sebelum dan sesudah perlakuan, kemudian dianalisis menggunakan Uji Normalitas, Uji Homogenitas, Paired-Samples t-Test, Uji N-Gain, dan Uji Regresi Linear Sederhana. Hasil penelitian menunjukkan peningkatan nilai rata-rata yang signifikan dari Pretest sebesar 66,7 menjadi Posttest sebesar 78,3, dengan nilai signifikansi (2-tailed) sebesar 0,000 (< 0,05) dan thitung 8,238 > ttabel 1,685. Hasil uji N-Gain menunjukkan skor rata-rata 0,6834 (68,34%) yang berada pada kategori sedang. Penyajian permasalahan kontekstual dan aktivitas pemecahan masalah dalam e-modul memberikan kesempatan kepada peserta didik untuk menganalisis informasi, mengevaluasi bukti, dan merumuskan solusi. Dengan demikian, e-modul berbasis PBL terbukti efektif dan berpengaruh signifikan dalam meningkatkan keterampilan berpikir kritis peserta didik pada materi pencemaran lingkungan.
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