Nguyễn MT, Alorgbey B. From Problems to Progress: Improving Mathematics Learning Outcomes through Problem-Solving Instruction. Intv. Ind. J. of. Math. Ed [Internet]. 2025Dec.27 [cited 2025Dec.31];3(2):159-68. Available from: https://cahaya-ic.com/index.php/IJoME/article/view/2519