This article discusses the features of studying the topics of the section "Set. Elements of Logic" in the course of
elementary school mathematics. The analysis of the content of the program and its implementation in the textbook
"Mathematics" is given. The article describes the features of the updated content of mathematical education in primary
classes. The role of the "Set. Elements of logic" in the development of logical thinking of primary school students. A
feature of studying the section "Set. Elements of Logic" is that a system of exercises has been developed that implement
the formation of thinking techniques. The analysis of the proposed system of exercises in the implementation of the
educational goals of this section is carried out. When developing the system of exercises, the age-specific features of the
students ' thinking development were taken into account. In the organization of work with the system of exercises, the
ways of increasing the mental activity of students, the development of independent work were considered. A special
role in the development of logical thinking of students is also occupied by logical tasks presented in the category "You
are a researcher".