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PENINGKATAN PRESTASI BELAJAR MATEMATIKA MATERI RELASI DAN FUNGSI MELALUI MODEL NUMBERED HEADS TOGETHER. koulutus [Internet]. 2020 Dec. 17 [cited 2025 Jul. 22];3(2):226-37. Available from: https://ejournal.ukk.ac.id/index.php/koulutus/article/view/415