Cognition - begins durning the infant/tpddler years

This means how a child thinks and are they able to use prior knowledge to solve problems  or to be creative. For example a toddler may use a small box as a hat because she has had prior knowledge or experience with a hat. In order for toddlers to creative and imaginative .This domain also allows infants/toddlers to demonstrate the awareness of cause and effect ,a good example is when a baby shakes a rattle. She realizes that shaking the rattle makes a sound. Your infant/toddler must be given the opportunity to develop critical and analytic thinking. Your infant should be given the opportunity to compare and contrast objects etc. These are problem solving skills that are needed for school. Number sense infants/toddlers should begin learning  the knowledge of counting. You can begin with their body parts- you have two eyes etc. I know your baby is not speaking but remember that her brain is working and needs only one experience with  a concept. Toddlers should be given shapes to play with ,they should be introduced to vocabulary such as big, bigger , they should begin sorting - you can say lets put all the red cars away, classifying and organizing objects. You can find all these items at home for this activity. Young children need items big  to play with. You can use the pots and their covers to teach size.
This do main serves too purposes ,it gives infants/toddlers general knowledge  and allows children to think.