Safitri T. PENGARUH MODEL PEMBELAJARAN ADVANCE ORGANIZER (AO) TERHADAP PEMAHAMAN KONSEP MATEMATIS SISWA KELAS VIII SMP SWASTA AMAL LUHUR MEDAN. Cartesius [Internet]. 2023Jan.28 [cited 2024Jul.3];5(2):91-101. Available from: https://ejournal.ust.ac.id/index.php/CARTESIUS/article/view/2418