PENINGKATAN HASIL BELAJAR MATEMATIKA MATERI BANGUN RUANG MELALUI MODEL PROJECT BASED LEARNING BERBANTUAN MEDIA KERTAS KARTON PADA PESERTA DIDIK KELAS V SDN PUTAT JAYA IV-380 SURABAYA. JMER [Internet]. 2025 Jun. 30 [cited 2025 Jul. 1];4(1). Available from: https://journalng.uwks.ac.id/jmer/article/view/493