With the purpose of verity the efficiency of the Didactic Thecnical "Open Classroom" in the significant learning of children of primary school we did the present investigation by mean of the investigation for it we determinated the sample of a total of 20 children of 2"d grade of the Educative lnstitution Experimental "José Carlos Mariátegui" F.E.H, matriculated in the 2008. In its operational part the investigation was conduced by Pre experimental was applied a pre-test to evaluate the prior learning of children, which was contrasted with the, post test. After applying of the technical. To contrasted the hypothesis made to use of the distribution test T-Student with a confidence level of 95 %. Likewise, to evaluate, we took account the levels: Conceptual, procedurals, attitudes. In conceptual level, the contents werw constituted in base to data, facts and concepts that that children m...