Madang S, Ariesti I, Apriani M, Lestari SD, Masrifah A, Kezia K, et al. Stimulating Early Children’s Knowledge about Shape Using the Geometry Board. GENIUS: Indonesian J. of Early Child. Education [Internet]. 2022 Jun. 30 [cited 2024 Sep. 16];3(1):81-90. Available from: https://genius.uinkhas.ac.id/index.php/gns/article/view/84