Situmorang, Suryani S, and Endang Widjajanti Laksono. 2025. “Penerapan Problem-Based Learning Terhadap Kemampuan Berpikir Kritis Dan Keaktifan Belajar Peserta Didik”. Jurnal Pendidikan Matematika Dan Sains 13 (Special_issue):283-94. https://doi.org/10.21831/jpms.v13iSpecial_issue.89598.