Yesica Destri Turnip, Tumpal Manahara Siahaan, Injen Pardamean Butarbutar. 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. IJSET [Internet]. 2025 Sep. 30 [cited 2026 Jun. 24];4(10):1352-63. Available from: https://ijset.org/index.php/ijset/article/view/1722