Digital tools and services in the professional realm of modern teacher

The problem of using electronic educational resources (EER) in teaching is updated. The concept of electronic educational resource is discussed. Their classifications for different criteria are presented. It is noted that digital tools and services are a subset of EER. Classifications and examples of the latter are presented. The reasons important for the teachers to use digital tools and services in their professional activities are defined. Tasks for the teacher t o introduce digital tools and services to teaching are formulated