This study reports on the development of new motor and behavioural indicators for recognizing symbolic acts among infants. Following five infants between the ages of 6 and 18 months and their ability to use an object in novel way yielded four levels of action, based on the number of objects and actions combined in each symbolic act. Employing Baldwin et al.'s [(2001). Infants parse dynamic action. "Child Development," 72(3), 708-717] method for verifying that the infants intend to use an object in novel way yielded behavioural indexes that enabled verifying infants' intention from the pre-beginning phase for both complete and partial acts. Following an extensive range of subjects (N = 14; from six to eighteen months), reveals that first symbolic acts are visible at six months of age and until 15 months of age infants preform mainly single-object play. The discussion addresses symbolic acts' developmental pattern and emphasizes the dynamic fashion that symbolic play may investigate with the current research tool.