Trg, G.A.L.B. and Simanjorang, M.M. 2025. The effect of the project-based learning model with a STEAM approach on students’ learning interest and mathematics learning outcomes in grade VII. Jurnal Pendidikan Matematika (JPM). 11, 2 (Dec. 2025), 238–247. DOI:https://doi.org/10.33474/jpm.v11i2.24335.