This paper outlines the implementation of a Science Rally held at Palm Beach State Primary School (Australia) which has a high proportion of disadvantaged families. Fostering the principles of multi-age grouping in primary schools, the rally aimed at engaging children in meaningful and exciting activities in a non threatening and success oriented setting. Children from 5 to 13 years of age worked through science problem-solving activities while aiding group members realize their differences, skills, and abilities. Outcomes of the rally include: a richer learning environment; an individualized curriculum; cooperation and support; peer tutoring; good relationships; positive attitudes and self-concept; success; positive results for underachievers; low socioeconomic status or other marginalized children; academic achievement; continuum of learning; team teaching; applicability to problem-solving; and acceptance of multi-age grouping. (Author/JRH)