Oktavianah, Rini. “Validitas Media Pembelajaran Matematika Video Animasi Berbantuan Adobe After Effect Berbasis Problem Based Learning SMP Kelas VII”. Jurnal Riset Pembelajaran Matematika 4, no. 2 (October 30, 2022). Accessed November 23, 2024. http://journal.unirow.ac.id/index.php/jrpm/article/view/524.