This thesis deals with the diagnosis and eventually evaluating certain preconcepts in the area of technical and media education of 4th and 5th grade pupils of primary school. The theoretical part is dedicated to the issue, related to the topic. Constructivism and its didactics is included, also the role of teacher in this type of education, concept of student curriculum and concepts of teaching and learning. We also mention technical and media education and its concepts in educational framework. The practical part is focused on a particular preconcepts and their subjective perception of pupils at primary school. For the research questionnaires were used to detect the cognitive and affective level. For better understanding of cognitive level mental maps were used. The pupils of primary schools in ČB took part in the research, epsecially the pupils of the primary schools Kubatova, Dukelská and Rožnov.