Hadist Awalia Fauzia. PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN HASIL BELAJAR MATEMATIKA SD. JPFKIP [Internet]. 2018 Apr. 25 [cited 2026 Oct. 6];7(1):40-7. Available from: https://primary.ejournal.unri.ac.id/index.php/JPFKIP/article/view/1000