UPAYA PENINGKATAN HASIL BELAJAR MATEMATIKA MATERI BILANGAN BULAT MELALUI MODEL PEMBLEJARAN PROBLEM BASED LEARNING SISWA KELAS VI B SDN PANDEANLAMPER 03. (2023). 1(2), 2858-2865. https://conference.upgris.ac.id/index.php/psnppg/article/view/5446