There are many great websites that offer a comprehensive overview of child development across various age groups, providing valuable insights into the physical, cognitive, social, and emotional milestones that children typically reach at different stages of their growth. Here's a quick summary: 

Ages 0-3:

• Physical Development: Infants rapidly develop motor skills, progressing from simple movements like grasping and rolling to more complex actions such as crawling, standing, and eventually walking. They also experience rapid growth in height and weight during this period.
• Cognitive Development: Cognitive abilities begin to emerge, with infants displaying curiosity, exploration, and sensory awareness. They learn through sensory experiences and interactions with their environment, gradually developing language, memory, and problem-solving skills.
• Social Development: Infants form attachments to primary caregivers, seeking comfort, security, and affection. They begin to recognize familiar faces and respond to social cues, laying the foundation for future social interactions and relationships.
• Emotional Development: Emotionally, infants experience a wide range of feelings, including joy, fear, and distress. They rely on caregivers for emotional support and regulation, learning to express their needs and emotions through gestures, vocalizations, and eventually words.
• Example: A baby in this age group might engage in simple sensory activities like playing with textured toys or listening to soothing music, stimulating their cognitive and sensory development.

Ages 3-6:

• Physical Development: Preschoolers continue to refine their motor skills, gaining better coordination, balance, and control over their movements. They engage in active play and exploration, using their bodies to interact with the world around them.