Teaching younger students the proper letter is conditioned not only by knowledge of spelling rules, but also the ability to use them in practical activity that forms the basis of a General method of formulating and solving a spelling problem. However, in school practice remains significant in the organization of the spelling work in class it is the student mastering the rules, which is then reduced them to writing, although problems in choosing certain letters appear directly in the process of writing words, sentences, text. The study of practical activity the teacher allowed the author to highlight the problem of the education of the children plays a spelling task in the process of mastering their text — reasoning. The purpose of the article is to reveal the methodological conditions which will allow the teacher, on the one hand, to teach children to create text-arguments on spelling material as one of the types of speech, on the other, to master the method of setting and solving spelling problems in the reasoning process. Such work assignment will change spelling rules: to be not only a means but also as a way to teach kids proper letter. In the article the composition of the ability to reason as a verbal action; presents specific steps for teaching children to create text-arguments of different types (explanation and evidence) orthographic material; disclosed terms of presenting didactic materials in which children can address different types of reasoning (on the basis of visual or auditory perception); formulated the task for the organization to work together in the process of choosing the ways of reasoning in the formulation and solving spelling problems.

Keywords: an orthographic task, text, is reasoning, explanation, proof, methodical terms.