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 [Internet]. 2026 Jul. 13 [cited 2026 Jul. 21];9(2):160-7. Available from: https://ojs.unsiq.ac.id/index.php/spektra/article/view/12190