Gunur B, Ramda AH, Makur AP. 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 [Internet]. 2019 Dec. 2 [cited 2025 Feb. 23];3(1):1-15. Available from: http://ojs.uph.edu/index.php/JOHME/article/view/1912