Kartika, Windy, Asrial Asrial, and Muhammad Haris Effendi-Hasibuan. 2021. “The Effectiveness of the Four-Step Jigsaw and Jigsaw Learning Model in Improving students’ Argumentation Skills about Salt Hydrolysis Concept”. Jurnal Pendidikan Kimia 13 (3):241-49. https://doi.org/10.24114/jpkim.v13i3.29929.