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Utari Oktaviani, Rahmawati F, Pamungkas MD. Development of sign language videos to improve mathematical communication of deaf students of fractional material. Union J. Ilm. Pendidik. Mat. [Internet]. 2023 Jul. 18 [cited 2024 Apr. 17];11(2):167-75. Available from: https://jurnal.ustjogja.ac.id/index.php/union/article/view/12534