“PENINGKATAN KEMAMPUAN HIGHER ORDER THINKING SKILL PESERTA DIDIK MELALUI PENERAPAN MODEL PROBLEM BASED LEARNING PADA MATERI GERAK MELINGKAR DI KELAS X SMA NEGERI 12 PEKANBARU”. SPEKTRA: Jurnal Kajian Pendidikan Sains 9, no. 2 (July 13, 2026): 160–170. Accessed July 21, 2026. https://ojs.unsiq.ac.id/index.php/spektra/article/view/12190.