Rendi Fitrah Handoko, Lily Rohanita Hasibuan, & Laili Habibah Pasaribu. (2026). The Association Between Full-Day School and High School Students’ Concentration and Understanding of Mathematics. EduMatSains : Jurnal Pendidikan, Matematika Dan Sains, 10(3), 349–364. https://doi.org/10.33541/edumatsains.v10i3.7851