Described is a sex education program for preschool children with emotional and learning problems in a therapeutic center. It is explained that the "Baby Week" method combines experimental and didactic learninq sequences geared to the developmental needs of this age group. The setting, planning, and organization of the program are discussed, and descriptions of some of the children's experiences are presented. It is reported that with structured play materials, teachers help to provide a setting in which curiosity and exploration are fostered with safety and within limits. (BD)