Afif Norma Lidya, Endang Istikomah. POWTOON-BASED MATHEMATICS LEARNING MEDIA: VALIDATION STAGE OF THE PYTHAGOREAN THEOREM. MREJ [Internet]. 2021 Feb. 28 [cited 2026 Jul. 21];5(1):1-7. Available from: https://journal.uir.ac.id/index.php/JPM/article/view/9206