Bestra, Lado, Chika Rahayu, and Helni Indrayati. “Problem Based Learning (PBL) Using Lego in Presenting Data”. Numerical: Jurnal Matematika dan Pendidikan Matematika 6, no. 2 (December 29, 2022): 211–218. Accessed July 6, 2025. https://journal.iaimnumetrolampung.ac.id/index.php/numerical/article/view/2596.