Ritonga, S.Y.K. and Maryanti, I. 2023. The Effect of the Student Facilitator and Explaining Learning Model on the Mathematics Learning Outcomes of Harapan Mekar Middle School Students in Medan. EDUCTUM: Journal Research. 2, 1 (Jan. 2023), 25–29. DOI:https://doi.org/10.56495/ejr.v2i1.315.