Nira, Nira, et al. “Pengembangan Lembar Kerja Peserta Didik Berbasis Problem Based Learning Pada Mata Pelajaran Matematika Di Sekolah Dasar”. Journal of Education Research, vol. 5, no. 4, Oct. 2024, pp. 5137-45, doi:10.37985/jer.v5i4.1591.