This document is comprised of the one issue in volume 5 of "Bridges," a publication produced by the California Head Start-State Collaboration Office to detail the activities of the educational partnership and to provide relevant information to programs participating in the partnership. The Fall 2000 issue focuses on children with challenging behaviors and shares some of the latest thinking about how best to meet the social and emotional needs of children. This issue includes articles on: (1) fostering infant/family mental health; (2) providing mental health treatment for infants, toddlers, and families; (3) training and technical assistance related to young children with mental health and behavioral disorders; (4) resources for reflective thinking regarding challenging behavior; (5) problem-solving steps as a tool for reflective thinking; (6) relationship-based mental health consultation model; (7) responsive teaching; (8) early intervention for children with behavior problems; and (9) descriptions of Head Start partnerships with higher education and child care programs. Also included are Web site resources. (KB)