The book contains three chapters of a monograph written by V.F. Litovsky in 2016-2019. This monograph was conceived in seven chapters. Unfortunately, Veniamin Fedorovich did not have time to write them. Only sketches remain. The first two chapters contain the author's theoretical views on the problems of formation of written speech of a preschooler becoming a schoolboy, and the possibility of the younger schoolboy becoming a subject of written speech. The third chapter of this work describes in detail the practical experiment conducted in one of the schools of Chelyabinsk.