The role of the toy demonstrator in a home-based, mother-involved intervention effort (Verbal Interaction Project) is presented in this handbook for staff members. It is believed that the prerequisites for functioning in the toy demonstrator's role are a sense of responsibility, patience with the children and their mothers, and willingness to be taught. The toy demonstrator's duties consist of twice-weekly home visits to introduce and stimulate verablly oriented play between mother-child pairs using project toys and books. The toy demonstrator must attend a weekl y group conference to learn the verbal interaction techniques for each new toy or book. During this conference, the toy demonstrators evaluate toys or books used in previous home sessions. The VISIT (Verbal Interaction Stimulation Techniques) approach used in the program has proven successful in stimulating low-income mothers and their preschool children to interact verbally in ways that benefit the child's later success in school. (DB)