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Yolanda F. Peningkatan Hasil Belajar Matematika Siswa Melalui Penerapan Pembelajaran Kooperatif Tipe Numbered Heads Together . JA [Internet]. 2019 Oct. 31 [cited 2025 Dec. 17];2(1):112-20. Available from: https://ojs-staging.upp.ac.id/index.php/absis/article/view/205