بوكعولة2023-04-302023-04-3020213603-7403http://ddeposit.univ-alger2.dz/handle/20.500.12387/5143The development of the child's cognitive structure is linked to the development and development of new formations of the different knowledge units, processes and cognitive functions reflected therein. Each child has the cognitive systems that govern his or her treatments and decisions to make changes or modifications to the environment around him or her. Knowledge structures change at every evolutionary stage and control children's thinking and behaviour through the process of representation and harmonization. The objective of the current research is to explain the evolution of these knowledge structures and the patterns of children's responses to reflection tasks, and to explain responses that reflect their level of thinkingArcognitive structure;process of assimilationArticle