1.
Sitio H, Sinaga DY. A Comparative Study between the Use of Problem Based Learning Method and Expository Learning Method in SPLDV Material on Students’ Mathematical Concept Understanding. basicedu [Internet]. 2022 May 16 [cited 2024 Sep. 1];6(4):5754-63. Available from: https://jbasic.org/index.php/basicedu/article/view/3124