Elementary schools are attended by a diverse population of children, who inevitably encounter and come into conflict with one another. The failure to cope with such conflict can lead to worrying and a lack of self-confidence. Research is necessary to identify educational solutions to this problem. An attempt to devise a lesson using explanatory texts saw a certain degree of success but did not lead to a resolution of the fundamental issues. A consequent re-examination of the underlying theory has led to the practice and construction of an educational practice theory that incorporates Rational Emotive Behavior Therapy. The purpose of this paper is to present a summary and the results of the implementation of this. To solve the problems described above, it was necessary to break with previous approaches to teaching and to approach education in such a way as to use "children's logic." Future challenges include grasping the realities of "children's logic" and treat it as a valid approach.