Certain types of graphics are described as qualitative research tools used in teacher education at the Universidad de Extremadura School of Education, as part of its Teaching Innovation Project.This study is based on the assumption that college students are neither trained nor expert readers, but readers in the process of formation who suffer the same problems as precarious or superficial readers and, therefore, must diagnose and correct their own situation as the best example and training for their involvement in classroom contexts.Their heuristic and self-reflective qualities are assessed in light of the professional skills of teachers.