PENINGKATAN PRESTASI BELAJAR MATEMATIKA MATERI RELASI DAN FUNGSI MELALUI MODEL NUMBERED HEADS TOGETHER. koulutus [Internet]. 2020 Dec. 17 [cited 2024 Nov. 23];3(2):226-37. Available from: https://ejournal.kahuripan.ac.id/index.php/koulutus/article/view/415