Kurniasih O. PENINGKATAN HASIL BELAJAR MATEMATIKA MELALUI MODEL PEMBELAJARAN PROJECT BASED LEARNING (PJBL) SISWA KELAS I SDN 1 RANTAU LURUS . KPD [Internet]. 2023 Jul. 31 [cited 2025 Aug. 2];2(3):305-9. Available from: https://kpd.ejournal.unri.ac.id/index.php/kpd/article/view/188