This article examines part of an action research project carried out in a Spanish public school. We explain the complex reality of an early childhood education classroom. Focusing on early childhood education, the project was developed in collaboration with a teacher from one of the classrooms of four year olds. Several of the children in the class have serious behaviour problems. The teacher (Lucía) is very concerned because they take their anger and frustration out on objects, classmates and adults by hitting them. She has a lot of difficulty working with these problem children. This research work deals with transforming the practices of the researcher, the pupils and the teacher. One of the first critical challenges was to turn classroom discussions into opportunities for addressing the injustices that the children experience daily. Teaching should serve to empower children. Programmed classroom discussions can be a place where pupils are given the chance to speak out about conflicts, and where important decisions are made to address them.