Nahak, Fransiska Rina, Justin Eduardo Simarmata, and Selestina Nahak. 2026. “Enhancing Students’ Learning Activities and Learning Outcomes in Relations and Functions Through the Numbered Heads Together (NHT) Learning Model”. MATH-EDU: Jurnal Ilmu Pendidikan Matematika 11 (2):164-79. https://doi.org/10.32938/jipm.v11i2.11216.