An academic is a creator of knowledge and innovator in his field of study. This state of mind has put in us the idea of preserving all the knowledge produced in our practical works and put them to the public through this work. You will find 11 works that we were able to recover after the hard disk was damaged. We are among the postgraduate students at the University of Kinshasa, Faculty of Psychology and Educational Sciences, Department of Educational Sciences, 2019-2021 cohort. At the end of each seminar, the law recommends that professors give learners practical work so that they can combine theory with practice. All our gratitude to Professors Jacques MANDOSI MAMPUYA, Stanislas KISANGANI ENDANDA, Dieudonné MUSA, Léon MBADU KHONDE, Denis LUFUNGULA, Jean Bosco MAHUNDA, Professor KANDALA, all of the Faculty of Psychology and Educational Sciences of the University of Kinshasa for their precious orientations in the harmonious accomplishment of these practical works.