Yesica Destri Turnip et al. 2025. THE EFFECT OF THE NUMBERED HEADS TOGETHER COOPERATIVE LEARNING MODEL ON STUDENTS’ LEARNING VALUES IN THE ECONOMICS SUBJECT IN CLASS XI PRIVATE SENIOR HIGH SCHOOL TAMAN SISWA PEMATANGSIANTAR ACADEMIC YEAR 2025/2026. International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET). 4, 10 (Sep. 2025), 1352–1363.