Molon, Susana Inês, and Alana Soares Albuquerque. “Playtime, Activities and Interactions of Children in the First Year of the Elementary School”. Revista De Educação PUC-Campinas, vol. 17, no. 1, June 2012, pp. 55-63, doi:10.24220/2318-0870v17n1a250.