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Darma, I.K., Karma, I.G.M., Santiana, .I.M.A. and 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 (May 2023), 101–108. DOI:https://doi.org/10.31940/soshum.v13i1.101-108.