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In Piaget's theory of cognitive development, in this third stage, a child shows increased use of logic.

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Seriation:  Kids at this age can sort objects or situations according to size, color, shape, type, etc.

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Seriation:  Kids at this age can sort objects or situations according to size, color, shape, type, etc.

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Classification:  Kids at this age can make specific groups of things based on a heirarchical classification.  They can organize and recognize that things are plants or animals or that superheroes may have better powers than other super heroes.  They can recognize that animals and plants are in different "categories" and that there are "good guys" and "bad guys".

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Classification:  Kids at this age can make specific groups of things based on a heirarchical classification.  They can organize and recognize that things are plants or animals or that superheroes may have better powers than other super heroes.  They can recognize that animals and plants are in different "categories" and that there are "good guys" and "bad guys".

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Reversability:  Kids this age realize tat numbers or objects can be changed and then returned to their original condition.  A child understands that if a ball deflates that it can be filled with air again.

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Reversability:  Kids this age realize tat numbers or objects can be changed and then returned to their original condition.  A child understands that if a ball deflates that it can be filled with air again.

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Conservation:  Kids at this age understand that something stays the same in quantity even if its physical appearance changes.  A cup of water poured into an ice cube tray is still a cup of water.  Two balls of clay squeezed out into a long shape is still the same two balls of clay.  

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Conservation:  Kids at this age understand that something stays the same in quantity even if its physical appearance changes.  A cup of water poured into an ice cube tray is still a cup of water.  Two balls of clay squeezed out into a long shape is still the same two balls of clay.  

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Decentering (decentration):  Kids this age can consider multiple aspects of a situation.  A child might choose a cherry lollipop over a strawberry lollipop, because they know they like cherry, even though both the lollipops are the same size and are both red.  

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Decentering (decentration):  Kids this age can consider multiple aspects of a situation.  A child might choose a cherry lollipop over a strawberry lollipop, because they know they like cherry, even though both the lollipops are the same size and are both red.  

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Transitivity:  Kids this age show the ability to recognize relationships among things.  A child this age can put books back on a shelf, according to height, if instructed to do so.  

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Transitivity:  Kids this age show the ability to recognize relationships among things.  A child this age can put books back on a shelf, according to height, if instructed to do so.  