Sihaloho, Sondang M, and Melda Jaya Saragih. 2024. “PENERAPAN MODEL PROBLEM BASED LEARNING UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS SISWA PADA PEMBELAJARAN MATEMATIKA [IMPLEMENTATION OF THE PROBLEM BASED LEARNING MODEL TO IMPROVE STUDENTS’ CRITICAL THINKING SKILLS IN MATHEMATICS LEARNING]”. JOHME: Journal of Holistic Mathematics Education 8 (1):101-15. https://doi.org/10.19166/johme.v8i1.8270.