Biantara DNA. MENINGKATKAN PRESTASI BELAJAR MATEMATIKA MELALUI PENGGUNAAN MODEL PEMBELAJARAN PROBLEM SOLVING. JEAR [Internet]. 2020 May 25 [cited 2024 Nov. 30];4(2):171-7. Available from: https://ejournal.undiksha.ac.id/index.php/JEAR/article/view/25003