• infant

    an infant is a newborn baby that is to little to take care of itself.
  • toddler

    They call children from 12-24 months toddlers because they are just learning how to walk and when they do walk they toddle a lot.Toddlers are more coordinated and physically, emotionally, and socially skilled than infants.
  • preschoolers

    the reason they call them preschoolers when they are 3-4 years old is because they are just starting school. so now they're learning all kinds of skills such as people skills and sharing.