The purpose of this quasi-experimental study was to demonstrate that using as a methodological strategy implementing a program of play activities class sessions ersonal Area Social; one is able to modulate the aggressive behavior in the children in the dimensions: psychoactivity, change of conduct and modulation of the verbal and physical aggressive behavior. The study was conducted in an educational institution of Ventanilla - Callao. Data refer to two sample (n1=24 control group and n2=24 experimental group) of students between 8 and 10 years of age. They use the instrument. Aggression Questionnaire (Buss & Perry, 1992) with items modified and adapted for children. The results indicate the significant influence of the program, as videnced in the pretest and posttest scores to modulate aggressive behavior in third grade children in an educational institution of Ventanilla - Callao.