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, [S. l.], v. 9, n. 2, p. 160–170, 2026. DOI: 10.32699/c35ab426. Disponível em: https://ojs.unsiq.ac.id/index.php/spektra/article/view/12190. Acesso em: 21 jul. 2026.