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Marcelino Hermawan, Marcellino Aditya and Winta T. Satwikasanti (2025) “Perancangan APE bagi Siswa Penyandang Tunagrahita untuk Meningkatkan Kemampuan Berhitung Dasar, dengan Pendekatan Pembelajaran Manipulatif”, SERENADE : Seminar on Research and Innovation of Art and Design, 3(1). Available at: https://serenade.ukdw.ac.id/index.php/serenade/article/view/226 (Accessed: 22 February 2026).