Andrayani A, Haida Fitri, Rusdi, M. Imamuddin. The Effect of the Collaborative Learning Model on the Mathematical Problem-Solving Ability of Grade VIII Students at SMPN 1 Sasak Ranah Pesisir in the 2023/2024 Academic Year. TOFEDU [Internet]. 2025 Apr. 30 [cited 2025 Jul. 12];4(4):979-86. Available from: https://journal.tofedu.or.id/index.php/journal/article/view/510