Considers 3- to 6-year-olds' work cycle, looking first to the Montessori concept of normalization, manifest as increasing depth of concentration. Offers guidelines for a "protected lesson," designed to foster independence. Discusses interest and purpose as the basis for work, work "curves," control of error, presentation dynamics, and design of the prepared environment as they relate to the directress' role in linking children to true work. (Author/KB)