“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”. Journal of Mathematics Education Research 4, no. 1 (June 30, 2025). Accessed August 21, 2025. https://journalng.uwks.ac.id/jmer/article/view/493.