Created as a companion publication to the California Infant/Toddler Learning and Development Foundations, this framework supports caregivers as they strive to make teaching responsive and meaningful for infants and toddlers. It presents strategies and information to enrich learning and development opportunities and provides a structure that infant/toddler providers and administrators can use to make informed decisions as they plan learning environments and experiences for our youngest children. Like the infant/ toddler foundations, the framework is based on current research on how infants and toddlers learn and develop in four domains: (1) social–emotional, (2) language, (3) cognitive, and (4) perceptual and motor development. The framework emphasizes both the central role of the family in a young child’s learning and development and the diversity of California’s families. Attention is given to the importance of responsive, individualized care grounded in children’s secure relationships with their parents and primary caregivers. Seen as part of a comprehensive system, the infant/toddler curriculum framework supports effective planning and the ongoing cycle of observing, documenting, reflecting, and implementing appropriate curriculum.