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, [S. l.], v. 4, n. 1, 2025. Disponível em: https://journalng.uwks.ac.id/jmer/article/view/493.. Acesso em: 1 jul. 2025.