Darma, I. K., Karma, I. G. M., Santiana, . I. M. A., & Sadiyani, N. W. (2023). Effect Size Digital Mathematics Textbook in Blended Learning Assisted by Schoology Improves Mathematical Problem Solving Ability for Polytechnic Students. SOSHUM : Jurnal Sosial Dan Humaniora, 13(1), 101–108. https://doi.org/10.31940/soshum.v13i1.101-108