Saragih, Doni Irawan, and Ani Minarni. “Differences Between Student’s Mathematical Problem Solving Ability and Learning Motivation Taught By Using Geogebra-Assisted Cooperative and Contextual Learning Model”. Advances in Social Sciences Research Journal 5, no. 10 (October 21, 2018). Accessed November 23, 2024. http://116.203.177.230/index.php/ASSRJ/article/view/5264.