Pramudiani, Puri, Adinda Fuadillah Oktafiani, Tian Abdul Aziz, and Yoppy Wahyu Purnomo. 2017. “Enhancing Conceptual Knowledge about Shape through Realistic Mathematics Education”. Jurnal Inovasi Pendidikan Dasar 3 (1):31-38. https://journal.uhamka.ac.id/index.php/jipd/article/view/8631.