Ahmad Setyawan. Penggunaan Model Pembelajaran Problem Based Learning Meningkatkan Hasil Belajar Matematika Materi Barisan dan Deret. j. lesson learning stud. [Internet]. 2022 Jun. 20 [cited 2024 Jul. 18];5(1):149-56. Available from: https://ejournal.undiksha.ac.id/index.php/JLLS/article/view/48460