Aggression has become one of the biggest problems we encounter in kindergartens. Aggression is defined as a set of actions directed at others and includes verbal, physical and social behaviors that are destructive and harmful. It can be inherited or acquired over time, and most of ten generates problems in the preschool period (especially around the age of 6)[1]. Children engage in aggressive behaviors such as: hitting, biting, pushing, screaming to get a desired object (e.g. a toy). It is no longer news that we live in a world where the phenomenon of aggression is increasingly pronounced. We encounter these manifestations every day in the most diverse circumstances: in the family, at kindergarten, in parks, at playgrounds, etc. Aggressive behavior has become a habit in relationships with peers and not infrequently even a form of affirmation within a group of children.