“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, vol. 4, no. 1, Jun. 2025, Accessed: Aug. 21, 2025. [Online]. Available: https://journalng.uwks.ac.id/jmer/article/view/493