The article describes the possible aspects of the organization of the methodology of teaching mathematics in primary classes through digital educational resources, content. The theoretical analysis is carried out and the content analysis of the conceptual and categorical apparatus of digital education in the concepts of  "information competence, information technologies", "digital resource" is presented. The possibilities of "digital education" in primary classes are characterized generically in all the main subjects. There will also be samples of digital content prepared for the section "learning in parts" in the 4th grade according to the methodology of teaching mathematics in primary classes. In the section Research results, the article presents an algorithm for preparing digital resources. It is explained that the preparation of digital educational resources consists of text-based annimations, multimedia components (video clips, synthesizing images), and sound objects. A scenario for the preparation of digital content will be developed. The advantages of using digital resources in teaching mathematics in primary classes in the development of students ' cognitive abilities are analyzed. For example, the advantages of accessibility of education, personality-oriented learning, creation of an information educational environment, the possibility of choosing an individual trajectory, creative activity, motivational breakthrough, demonstration situation, etc. are described.