Résumé:
the cognitive development is related to the improvement of the specific components of the thinking processeses .During the period of adolecsence the processes get much more complex .The way I used to study the topic is using the questionnaire which is addresses to the fourth year middle school pupils of chahri bougrian school of mostaganem.the questionnaire were consist of 17 related questions which have relation the the general topic on the other side the participants were combination of males8 and famales12 exactly20 participants.the research questions which is raised is to know if the adolecsents used the same cognitive skills to improve their way of thinking and how can teachers help their pupils and the ways adolescents differ than children.Manny suggestion were supposed like adolescents are more advanced than children and teachers may increased or decreased the level of thinking of adolescents .The aim of the study is to know the characteristics of the transition from childhood to adulthood and understanding the cognitive changes that happen during this period.the result show that adolecsents will have an advanced level than children as a result they can create their point of views about the world and can create their own ethical values and they can make hypothesis and test them and make decissions and accept the responsibily for the consequences also they can decide solutions in systematic and logical way.
