SETIAWAN A. UPAYA MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SISWA MELALUI PENDEKATAN SAINTIFIK DENGAN MODEL PROBLEM BASED LEARNING (PBL) . EDUCATOR [Internet]. 2021Dec.10 [cited 2026Feb.26];1(2):192-9. Available from: https://jurnalp4i.com/index.php/educator/article/view/745