Saragih, D.I. and Minarni, A. 2018. 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, 10 (Oct. 2018). DOI:https://doi.org/10.14738/assrj.510.5264.