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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 (Dec. 2024), 483–487. DOI:https://doi.org/10.56495/hs.v4i3.663.