Educational Material for the Workshop "Communication, school culture and meaningful learning: Dialogue as a regulatory mechanism and psychological tool for the construction of knowledge" taught by teachers Bertha Xóchitl Magdaleno Vargas and Luis Miguel Rivero López of the National Polytechnic Institute; as part of the activities of the V National Colloquium of Higher Education at a Distance. The material commissioned was 2 lottery cards with the types of students that exist in a classroom, this in order that the teachers realized that they also had wrong judgments of their students and to improve as teachers had to leave aside these discriminatory judgments