The need to increase the number of kindergartens is associated with a high birth rate. To solve this problem, the construction of kindergartens in the regions is being intensively carried out. However, the insufficient number of kindergartens leads to the opening of different age groups. This article discusses the features of the organization of educational activities of different age groups in preschool institutions, taking into account the observance of the day in accordance with the age characteristics of children. There are a number of questions on the problem of studying the features of organized educational activities in different age groups in preschool institutions, the author of the article, based on the scientific works of scientists O.E.Smirnova, V.N.Avanesova, L.L.Timofeeva, etc.defines them.