Ardana, D. A., Mawarsari, V. D. and Sulistyaningsih, D. (2026) “Systematic literature review: Integrating problem-based learning with teaching at the right level to enhance problem solving skills”, Jurnal THEOREMS (The Original Research of Mathematics), 11(1), pp. 1–15. doi: 10.31949/th.v11i1.16985.