Sari, M. C. P., Mahmudi, M., Kristinawati, K., & Mampouw, H. L. (2023). Peningkatan Kemampuan Representasi Matematis melalui Model Problem Based Learning. PTK: Jurnal Tindakan Kelas, 4(1), 1–17. https://doi.org/10.53624/ptk.v4i1.242