The article deals with a modern mathematics lesson in elementary school, which includes the formation of students’ UUD. An important factor in teaching younger schoolchildren is not only the knowledge gained in the lesson, but also the acquired cognitive skills.

The article deals with a modern mathematics lesson in elementary school, which includes the formation of students’ UUD. An important factor in teaching younger schoolchildren is not only the knowledge gained in the lesson, but also the acquired cognitive skills.

The article discusses the concept of «metasubject results», its essence and the need for modern mathematical education. The features of the educational basis in the acquisition of metasubject results-metasubject tasks are revealed. The authors give examples of methods of implementing the achievement of metasubject results when solving tasks in mathematics from the textbook of the educational and methodological complex «Primary school of the XXI century».