Authors' team. Materials of the Summer mathematical school “Scarlet Sails”, June 2022, Grade 6

We bring to the attention of the reader materials for the 6th grade of the 1st shift of the “Scarlet Sails” Summer Mathematical School, June 2022. Children who graduated from the 6th grade in the 2021/22 academic year were considered 6th graders. A feature of the work was that lasses with 6th graders were conducted by high school students from school No. 179 in Moscow, who graduated from the 9th grade in the same year. They are the authors and compilers of these educational materials.