Techniques are described for assisting educators and parents in developmental assessment and learning experience and play activity planning for infants, toddlers, preschool, and Prekindergarten children age 0-66 months. Data identifying multiple behaviors used to assess developmental progress is stored in electronic storage and user input related to observations of a preschool child interacting in a learning experience or play activity is received. The observations indicate the ability of me preschool child to perform an associated behavior. The ability of the preschool child to perform the multiple behaviors is determined and a developmental age or level is associated with the preschool child based on the observations. Data indicative of the developmental age or level of the preschool child is analyzed and an appropriate learning activity or behavior for the preschool child is determined based on the analysis of the developmental age or level of the preschool child.