Kindangen, V., Sulangi, V. and Damai, I. 2021. PENGEMBANGAN PERANGKAT PEMBELAJARAN MODEL PROBLEM SOLVING MATERI BARISAN ARITMATIKA PESERTA DIDIK SMA NEGERI KAKAS. Sora Journal of Mathematics Education. 2, 1 (May 2021), 28-34. DOI:https://doi.org/10.30598/sora.2.1.28-34.