Nam Kee, Norman Kiak - Chia, Noel Kok Hwee. “Teaching Arithmetic Operation of Division With Montessori Division Board Set to Two Children With Autism Spectrum Disorders: A Case Study”. Journal of the American Academy of Special Education Professionals 5/2 (June 15, 2010), 157-171. https://doi.org/10.64546/jaasep.111