MENINGKATKAN HASIL DAN MINAT BELAJAR MATEMATIKA MELALUI OPTIMALISASI KERJA KELOMPOK PADA MODEL PROBLEM BASED LEARNING. psnppg [Internet]. 2023 Nov. 30 [cited 2026 Aug. 11];1(2):1277-86. Available from: https://conference.upgris.ac.id/index.php/psnppg/article/view/5260