Madang, S., Ariesti, I., Apriani, M., Lestari, S. D., Masrifah, A., Kezia, K., & Rozie, F. (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