Aim. The article is devoted to the study of scientific and methodological foundations of teaching spelling in Russian language lessons in primary school and the analysis of literature on the problems of this study.

Methodology and results. The article considers teaching oral expression as a way of explaining spelling and the targeted use of methodological techniques in Russian language lessons that contribute to the formation of educational and scientific speech and an increase in the level of spelling literacy of students. The paper presents thematic planning of lessons devoted to work on oral connected speech in the process of studying the main spelling rules in primary school and the main spelling algorithms for individual spelling rules.

Research implications. The article is intended primarily for teachers of russian language, primary school teachers, teachers of additional education for children and adults, methodological services working with citizens with a migration history who study russian language as a foreign language, as well as all those interested in improving spelling literacy and russian orthography.