Hasibuan, S. J., Sipakkar, T. R. B., Helmira, T., Pardosi, M. F. N. and Anim, A. (2024) “Implementation of Problem Based Learning (PBL) Model to Increase Students’ Interest in Learning Spatial Building Material in Class VII of SMP Negeri 5 Kisaran”, Holistic Science, 4(3), pp. 483–487. doi: 10.56495/hs.v4i3.663.