Rahayu, G.D.S., Jayadinata, A.K. and Bayu Kelana, J. 2026. A rational decision-making learning model to enhance elementary students’ environmental understanding . Indonesian Journal of Educational Development (IJED). 7, 1 (May 2026), 185–197. DOI:https://doi.org/10.59672/ijed.v7i1.6268.