Samuel, J., Nio, T. H. and Simbolon, K. (2025) “The Effect of Numbered Head Together Learning Model Assisted by Learner Worksheets on Mathematical Problem-solving Ability”, EduMatSains : Jurnal Pendidikan, Matematika dan Sains, 10(2), pp. 1–14. doi: 10.33541/edumatsains.v10i2.7011.