“PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING (PBL) DAN MOTIVASI TERHADAP HASIL BELAJAR DAN BERPIKIR KRITIS SISWA”. Jurnal Tematik 9, no. 3 (December 28, 2019). Accessed March 21, 2026. https://jurnal.unimed.ac.id/2012/index.php/tematik/article/view/16700.