0-1

The 0–1 year period focuses on the foundational sensorimotor stage. Physical development progresses rapidly from core strength to purposeful grasping, hand-to-hand transfer, and crawling, building fine motor skills. Cognitively, infants learn via senses and actions, developing object permanence and cause-and-effect understanding. Socially/Emotionally, they build trust through predictable routines and responsive interactions. Communication foundations are laid by responding to babbles and gestures (extra)