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Andrayani, A., Haida Fitri, Rusdi and M. Imamuddin 2025. 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: The Future of Education Journal. 4, 4 (Apr. 2025), 979–986. DOI:https://doi.org/10.61445/tofedu.v4i4.510.