Suntusia, S., Dafik, D. and Hobri, H. 2021. THE LEVEL OF CRITICAL THINKING SKILL ON SOLVING TWO-DIMENSIONAL ARITHMETICS PROBLEMS THROUGH RESEARCH-BASED LEARNING. Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika. 3, 1 (Apr. 2021), 55-69. DOI:https://doi.org/10.35316/alifmatika.2021.v3i1.55-69.