Gunur, B., Ramda, A. H. and Makur, A. P. (2019) “PENGARUH PENDEKATAN PROBLEM BASED LEARNING BERBANTUAN MASALAH OPEN-ENDED TERHADAP KEMAMPUAN BERPIKIR KRITIS DITINJAU DARI SIKAP MATEMATIS SISWA [THE INFLUENCE OF THE PROBLEM-BASED LEARNING MODEL ASSISTED BY OPEN-ENDED PROBLEMS TOWARDS MATHEMATICAL CRITICAL THINKING SKILLS BASED ON STUDENTS’ MATHEMATICAL ATTITUDE]”, JOHME: Journal of Holistic Mathematics Education, 3(1), pp. 1–15. doi: 10.19166/johme.v3i1.1912.