Rangkuti, Armina, and Isran Rasyid Karo-Karo. “The Effect of the Group Investigation Model Assisted by the ‘Make a Match’ Game on Mathematical Problem-Solving Ability in Statistics”. Journal of Mathematics Instruction, Social Research and Opinion 5, no. 3 (August 19, 2026): 2405–2414. Accessed August 20, 2026. https://journal-gehu.com/index.php/misro/article/view/1995.