Pebriari , N. K. S. ., Margunayasa, I. G., & Kusmariyatni, N. N. (2019). Development of Collaborative Learning Devices on Two-Dimentional Figure Topic of Mathematics for 4th Students. Jurnal Inovasi Pendidikan Dasar, 5(1), 17–24. Retrieved from https://journal.uhamka.ac.id/index.php/jipd/article/view/8664