Ninee P, Asyhara SA, Marian F, Noprisa, Hardianti D, Lestari F. Understanding of Mathematical Concepts Reviewed from The Use of The Cooperative Learning Model Group Investigation (GI). SINAPMASAGI [Internet]. 2024 Nov. 14 [cited 2025 Apr. 3];4(1):177-83. Available from: http://e-jurnal.fkip.unila.ac.id/index.php/SINAPMASAGI/article/view/805