What are a child’s needs at different stages of development?

Sensorimotor Stage: Birth through about 2 years. During this stage, children learn about the world through their senses and the manipulation of objects.
Preoperational Stage: Ages 2 through 7. During this stage, children develop memory and imagination. They are also able to understand things symbolically and to understand the ideas of the past and future.
Concrete Operational Stage: Ages 7 through 11. During this stage, children become more aware of external events, as well as feelings other than their own. They become less egocentric and begin to understand that not everyone shares their thoughts, beliefs, or feelings.
Formal Operational Stage: Ages 11 and older. During this stage, children are able to use logic to solve problems, view the world around them, and plan for the future.