Safriandi, Safriandi, et al. “ERROR ANALYSIS OF STUDENTS’ PROBLEM-SOLVING IN SOLVING HIGHER-ORDER THINKING SKILLS PROBLEMS ON FRACTIONS USING THE NEWMAN PROCEDURE”. Scientechno: Journal of Science and Technology, vol. 5, no. 4, Aug. 2026, pp. 442-53, doi:10.70177/scientechno.v5i4.4176.