SARI PM, APRILIA N, HARTONO R. IMPLEMENTASI MODEL PROBLEM BASED LEARNING UNTUK MENINGKATKAN SIKAP TANGGUNG JAWAB DAN HASIL BELAJAR PESERTA DIDIK MATERI PENGUKURAN KELAS 1 SD MUHAMMADIYAH PAKEL. EDUCATOR [Internet]. 2023Aug.2 [cited 2026Jan.26];3(2):111-9. Available from: https://www.jurnalp4i.com/index.php/educator/article/view/2390