Pengaruh Model Project Based Learning (PjBL) terhadap Hasil Belajar Siswa pada Materi Pencemaran Lingkungan di Kelas X SMA Negeri 1 Selesai Tahun Pelajaran 2024/2025

Abstract

The purpose of this study is to examine the effect of the PjBL model on students’ learning outcomes in the topic of environmental pollution.
The method used is quasi-experimental with a Two Group Pretest-Posttest design. The population includes all Grade X students at SMAN 1 Selesai, consisting of 9 classes. The sample was selected using a purposive sampling technique. Data collection to measure cognitive ability was carried out using multiple-choice questions, consisting of 25 pretest and posttest items. The results of the normality and homogeneity tests using the Kolmogorov-Smirnov method showed a significance value (Sig.) > 0.005. The research findings were analyzed using a t-test, which yielded a significance value (Sig.) of 0.000 < 0.05.