Noting that teachers and caregivers need an understanding of the fundamentals of developmentally appropriate practices in order to implement programs that meet the needs of young children, this guide serves as a practical tool for staff trainers and supervisors in early childhood education. It addresses four specific groups of early childhood professionals: caregivers of infants in center-based settings, caregivers of toddlers in center-based settings, teachers of preschoolers in center-based settings, and providers who care for infants, toddlers, preschoolers, and school-age children in family child care homes. Chapter 1 discusses seven indicators of a quality program and lists criteria of an appropriate curriculum. Chapters 2 through 5 are devoted to infants, toddlers, preschoolers, and family child care, respectively. Each of these chapters offers guidance on five components of high-quality care and education: (1) arrangement of the environment to promote positive behavior and learning; (2) selection and display of learning materials that address children's developmental needs and reflect their interests; (3) daily schedules and routines designed to respond to children's developmental needs; (4) daily programs of activities and opportunities that promote children's learning and growth; and (5) supportive interactions in which adults respond to children, guide their behavior, and promote social development. Each chapter includes a list of resources. (TJQ)