Constructivism is characterized by the student-centered approach, in which he builds his own knowledge. The student is the one who learns and in order to build this knowledge he goes through different stages. The constructivist teacher organizes and orients the student's construction, does not impose the correct answer. The construc-tivist teacher monitors learning through different methods using the principles of con-structivist training, which motivates students to look for answers on their own and not to learn by heart what the teacher dictates. In constructivist learning, metacognitive processes occupy an important place. Metacognition introduces the notion of meta-cognitive thinking, it refers to the broad concept of "self" but also to related concepts, has an important role in the development of self-assessment and has multiple func-tions. It contributes to the success of constructivist learning.