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bn:00177974n
Noun Concept
AR
No term available
EN
In psychology, developmental stage theories are theories that divide psychological development into distinct stages which are characterized by qualitative differences in behavior. Wikipedia
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مهارات حركية كبرى
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نظرية بياجيه في التطور المعرفي
مراحل نمو الأنا وفقا لليفينجر
EN
The development of the ability of addition
EN
Theory of the development of the concept of numbers by Piaget
EN
Number sense in infants
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