Nasution, E.Y.P. and Putri Yulia 2023. The Effect of Problem Based Instruction Model Using Telegram Quiz Bot on Students’ Learning Motivation. Mathline : Jurnal Matematika dan Pendidikan Matematika. 8, 2 (May 2023), 359–372. DOI:https://doi.org/10.31943/mathline.v8i2.391.