Rahmasiwi, D.S. , Maharani, S. and Hartini, S. 2023. The increasing of mathematics achievement in cube and cuboids nets using problem based learning models in grade 4. Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah di Bidang Pendidikan Matematika. 9, 2 (Nov. 2023), 244–252. DOI:https://doi.org/10.29407/jmen.v9i2.20653.