Human Growth and Development / Unit 5 HGD 0621 short lesson, about 20 seconds
Early Cognitive Milestones
Captions available
The idea
Typical milestones include knowing one's age and full name at four, counting to ten at five, and simple addition and subtraction at six.
In practice
A five-year-old retelling a story in order and writing her own name.
Where people slip
Three-year-olds vary widely; malnutrition and emotional deprivation can impair the brain development these milestones depend on.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
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