The researeh aimed to determine the influenee of the teaehing strategy "REO" learning area of Seienee Teehnology and Environment of the third grade students of Sehool Manuel Hidalgo Flores Fideneio Nueva Cajamarca Distriet, 201 O. Field data was eolleeted from 33 third grade students of Sehool Manuel Hidalgo Flores Fideneio, who developed a test befare and after attending training sessions to implement the Strategy Teaehing "REO". The eolleeted data were proeessed using the frequeney distribution for the analysis of Jearning in the area of Seienee, Teehnology and Environment, hypothesis testing was performed using the T distribution - Student with 5% signifieance level and degrees of freedom (N-1 ). The implementation of the Strategy Teaehing "REO" improved learning area of . Seienee, Teehnology and Environment of third grade students of Sehool Manuel Hidalgo Flores Fideneio Nueva Cajama...