NASUTION, E. Y. P. .; PUTRI YULIA. The Effect of Problem Based Instruction Model Using Telegram Quiz Bot on Students’ Learning Motivation. Mathline : Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 8, n. 2, p. 359–372, 2023. DOI: 10.31943/mathline.v8i2.391. Disponível em: https://www.mathline.unwir.ac.id/index.php/Mathline/article/view/391. Acesso em: 6 may. 2025.