Tiauw, Victoria, and Yao Tung Khoe. “THE EFFECT OF TEACHER LEADERSHIP AND STUDENT MOTIVATION THROUGH COLLABORATIVE LEARNING ON STUDENTS’ COGNITIVE ABILITIES AT XYZ PRIMARY SCHOOL”. JOHME: Journal of Holistic Mathematics Education, vol. 6, no. 2, Dec. 2022, pp. 122-37, doi:10.19166/johme.v6i2.5834.