A Yun, Q. (2018) “Improving Students Activity and Students Learning Outcomes by Using NHT (Numbered Heads Together) with PBI (Problem Based Instruction)”, Jurnal Axioma : Jurnal Matematika dan Pembelajaran, 3(1), pp. 76–82. Available at: https://ejurnal.uij.ac.id/index.php/AXI/article/view/311 (Accessed: 22November2024).