Elysia, Helga, et al. “Penerapan Model PBL Untuk Meningkatkan Keaktifan Belajar Matematika Kelas 2A SDN 1 Munggu”. Research in Science and Mathematics Education, vol. 1, no. 02, Oct. 2024, pp. 51-60, https://doi.org/10.62385/riseme.v1i02.127.