. H, Septiawati I, Cahya Prihandoko A. High-order thinking skill in contextual teaching and learning of mathematics based on lesson study for learning community. IJET [Internet]. 2018 Jul. 23 [cited 2024 Apr. 28];7(3):1576-80. Available from: https://www.sciencepubco.com/index.php/ijet/article/view/12110