Susantri, Ayu, Nurul Husna, and Buyung Buyung. 2022. “Students’ Mathematic Problem Solving Ability With Problem Solving Learning Model in Class VII SMP Negeri 2 Singkawang”. Jurnal Gantang 7 (2):163-72. https://doi.org/10.31629/jg.v7i2.4963.