simatupang nicolas junibinsar. PENINGKATKAN HASIL BELAJAR MATEMATIKA MENGGUNAKAN STRATEGI PROBLEM BASED LEARNING DI SMK NEGERI 1 BUNGO. j.tunas.pendidik [Internet]. 2022 Oct. 19 [cited 2024 Apr. 25];5(1):160-6. Available from: https://ejournal.ummuba.ac.id/index.php/pgsd/article/view/939