The age that is considered a big kid is between the ages of 7 years old to 12 years old.
Before 7 years old a kid is often called a little kid and before 4 a kid is often called a toddler.
The big kid stage is when a child is refining their physical skills and are also developing more complex social interactions and are also experiencing changes in their minds and their bodies.
A 5 year old is considered to be a school aged child, preschooler, Kindergartner or even a little kid.
5 year olds often start Kindergarten or in the year before first grade.
5 year olds are also moving beyond their toddler stage and are also developing important physical skills, cognitive skills and social skills.
Preschooler is a term that is used for children aged 3 to 5 years old, which includes 5 year olds.
Toddlers are ages 1 to 3 years old.
And after a child reaches 5 years old, they are considered school aged children, especially if they are in Kindergarten.
A 4 year old is considered to be a a preschooler or little kid.
The toddler stage is from around 1 year to 3 years old and some extend the toddler stage to 2 to 2.5 years of age.
By 4 children are often entering the preschool years and are also developing at a different pace than toddlers are.