<p>Based on the management and commitment of the teacher as a guide in learning, and through the qualitative approach guided by the educational action research from the methodology of planning, acting, observing and reflecting, the aim is to promote the writing skill in children with help of experimentation methods, verification and legitimacy of knowledge based on experience and confronting theory with practice. In order to achieve the mentioned before, we proceeded to the analysis of writings composed by children through the levels (A, B, C and D) and written production categories (coherence and local cohesion, global coherence, coherence and linear cohesion and Pragmatic) which were established in the curriculum of Spanish Language subject, which allowed to identify strengths and opportunities for improvement in writing skill.</p>