The main goal of the curriculum reform is forming the young generation as citizens with comprehensive knowledge and skills. The role of mathematics in the formation of personality is enormous. The development of logical thinking of the children is one of the most important issues facing mathematics in primary school. Experience shows that one of the most effective ways to develop the thinking of younger students is the solving problems that develop their logical thinking. Therefore, a primary school teacher should use various forms of non-standard logical problems in mathematics lessons.