In the Middle Ages, "lectio" was inseparable from "meditatio" meaning reading lesson aloud, accompanied by a deep meditation. One embodiment of computerization is the use of teacher education, called teaching materials. The use of teaching material has a decisive importance in solid and conscious assimilation of knowledge, develops observation in children and increases interest in knowledge. The prerequisite of this type of efficiency is the resizing lesson content around some ideas with cognitive value relevance, so that students are able to explain the connections that allow to increase complete and optimal applications and operational contexts in which wider knowledge is acquired.