Mareta, S., Ilwandri, I. and Santosa, T.A. 2023. Size Effect of Blended Learning Model on Students’ Problem Solving Ability in Geography Learning. Edumaspul: Jurnal Pendidikan. 7, 1 (Mar. 2023), 1460-1467. DOI:https://doi.org/10.33487/edumaspul.v7i1.6140.