8ccb22b7_Math_Maturity___IAE_Pedia__Math_Cognitive_Developments
[Stage & Name] Level 1. Piagetian and Math sensorimotor. Birth to age 2. [Math Cognitive Developments] 
Infants use sensory and motor capabilities to explore and gain increasing understanding of their environments. Research on very young infants suggests some innate ability to deal with small quantities such as 1, 2, and 3. As infants gain crawling or walking mobility, they can display innate spatial sense. For example, they can move to a target along a path requiring moving around obstacles, and can find their way back to a parent after having taken a turn into a room where they can no longer see the parent.
Math Maturity - IAE-Pedia
Math Cognitive Developments