The study techique if cases cibstututes an interesting proposal to the traditional teaching, where we heed that the contents and methidikigy teaching are linked to the process educational; the sooty techinique of cases permitted improving mutational process in such sense -leaming, achieving to develop in the students a learning developer. This investigation · s general objective was to develop the studies technique of cases to increment the learning developer of the pupils of the of: Vigotsky than once was backed up for these theories himself hipotetizó the following: lf we apply the study technique of cases then developer in 1er's pupils will increment significantly learning itself secondary 'level grade 1 CTA'S area - component physical, technological world and her environment the eagle's I.E. Manuel Segundo Velásquez. The fact-finding design was quasi experimental with pre test and...