Madang, Septina, Irvinia Ariesti, Maria Apriani, Sesilia Dea Lestari, Alviyani Masrifah, Kezia Kezia, and Fachrul Rozie. 2022. “Stimulating Early Children’s Knowledge about Shape Using the Geometry Board”. GENIUS: Indonesian Journal of Early Childhood Education 3 (1):81-90. https://doi.org/10.35719/gns.v3i1.84.