Liu , S., & Ariffin, A. (2026). DIGITAL TEACHING ACTIVITIES FOR ENHANCING UNIVERSITY STUDENTS’ PROBLEM-SOLVING SKILLS IN MATHEMATICS: AN NGT STUDY. INTERNATIONAL JOURNAL OF EDUCATION, PSYCHOLOGY AND COUNSELLING (IJEPC), 11(64), 1659–1674. https://doi.org/10.35631/IJEPC.1164092