Discusses the value of tool-use activities to help toddlers develop emerging skills, experience creative expression, and understand means-end relationships. Provides examples of opportunities for using objects as tools, including language acquisition, self-help activities, dramatic play, sensory experiences, and object manipulation. (DST)

Reports a series of studies conducted to investigate possible differences in the exploratory manipulation and play behavior of human infants 7-1/2- 11-1/2 months of age as a function of the attributes of the stimulus, the familiarity of the subject with the stimuli, the age and sex of the infants, and individual differences. (Author/CS)