“Penggunaan Alat Permainan Edukatif “Puzzle Jam” Terhadap Kemampuan Kognitif “Mengenal Lambang Bilangan””. PROCEEDING: The Annual International Conference on Islamic Education, vol. 3, no. 1, Feb. 2018, pp. 200-7, https://jurnal.stitnualhikmah.ac.id/index.php/proceedings/article/view/269.