Oktavia, Ayu Nur, Tatang Herman, and Aan Hasanah. 2026. “Exploring Students’ Argumentation Ability in Mathematical Problem Solving Based on Levels of Productive Struggle”. Jurnal Pembelajaran, Bimbingan, Dan Pengelolaan Pendidikan 6 (5):7. https://doi.org/10.17977/um065.v6.i5.2026.7.