An excellent topic of discussion Amreen! Children also express their anger and frustration through their art. If a child is constantly drawing dark,depressive figures and drawings, using bleak colors like blacks and grays or violent reds it may signify pent up anger or frustration. Even in structured drawing the aggression theme may become visible. For example, when asked to draw his classroom he may depict a child beating up another one in a corner, or a child alone and aloof from the entire classroom etc.