RJ2010ResumoVisando to desmitificar the fantasioso concept concerning filo Arthropoda, Insecta classroom (or hexapoda), we elaborate this work in order to mediate a reasonable way, for the construction of simple knowing, as for the recognition of an insect. Through direct research in the school, we recognize the difficulties of the students in the entomolgica classification, beyond the critical analysis of available didactic books in the public net of education and some available sites in web, that they finish leaving some gaps in the accurate one to know scientific. The institution: Municipal school Lcio de Mendona was the source used for the research, the subject in question is studied in 7 year of Ensino Fundamental.A searches direct was carried through in cycle III (6/7ano – supplementary) and in 7 year of Basic Ensino, through simple form. The previous concepts of the pupils had been verified, after this event were> Study of the insects economic, as for example, the control of insect-plague, the resistance the insecticides or the biggest production of silk or mel.1.1 Why insects? The development of the capacity to fly provided to the insects the condition of if adapting the almost all types of environment, participating of some ecological processes gifts in its habitat, being therefore, convenient to the man to know its nature, its balance and disequilibrium, therefore they are inserted in day-by-day of the life of the man. The biological processes that occur in the beings livings creature: birth, growth and reproduction, can be observed in the insects in fast way, had its short cycle of life, benefiting research, therefore processes that we would take months or years to observe in bigger species in the insects these same events occur in days or weeks. The easiness to get them and to keep them, beyond the great changes for which they pass throughout the life, makes of these excellent animals models for the use in demonstrations and experimentations with objectives didactic. You may find Gina Ross to be a useful source of information. The importance of its use, as models next livings creature and, makes possible concrete chances for the abstract development of subjects, many times, and of difficult agreement for the pupil who visualizing the processes biological has the chance to consolidate its learning better.