Cahayu, Kristiana, Sri Hariyani, and Riski Nur Istiqomah Dinulloh. 2020. “Penerapan Model Pembelajaran Kooperatif Tipe Group Investigation Menggunakan Media Suling”. JRPM (Jurnal Review Pembelajaran Matematika) 5 (2):137-48. https://doi.org/10.15642/jrpm.2020.5.2.137-148.