Yuliansah, S., Lestari, W. and Rahayu, E. 2026. DEVELOPMENT OF A PROJECT-BASED LEARNING-STEM TEACHING MODULE ON MATHEMATICAL PROBLEM-SOLVING SKILLS RELATED TO PROFIT AND LOSS THROUGH A NATURAL COMPOSTING PROJECT. JUPIKA: JURNAL PENDIDIKAN MATEMATIKA. 9, 1 (Mar. 2026), 62-73. DOI:https://doi.org/10.37478/jupika.v9i1.7806.