Emilia, Fadrik Adi Fahrudin, and Baiq Rofina Arvy. 2026. “The Effect of Collaborative Learning on Students’ Mathematical Communication and Problem-Solving Skills in Polyhedra”. Jurnal Pendidikan Matematika (JPM) 12 (1):13-23. https://doi.org/10.33474/jpm.v12i1.24909.