PENINGKATAN MOTIVASI BELAJAR MELALUI MODEL PROBLEM BASED LEARNING BERBANTU MEDIA KANTONG NILAI TEMPAT PADA MATA PELAJARAN MATEMATIKA KELAS 2A SDN PANDEANLAMPER 03 SEMARANG. psnppg. 2025;2(1):206-216. Accessed August 11, 2026. https://conference.upgris.ac.id/index.php/psnppg/article/view/6267