Akbar Ginandar and Dwiyani Pratiwi 2025. Improving the Students’ Speaking Ability Through Problem-Based Learning at SMK Negeri 2 Malinau : A Classroom Action Research. International Journal of Studies in International Education. 2, 4 (Nov. 2025), 123–133. DOI:https://doi.org/10.62951/ijsie.v2i4.448.