An open lesson on the study of traffic rules was held in kindergarten No. 62 "Tirek" of the Nizhny Maktama village of Almetyevsk. Ecologists of the South-Eastern Territorial Administration of the Ministry of Ecology of the Republic of Tatarstan also came to visit the kids. They told the children what exhaust gases are and how cars pollute the environment. Laboratory specialists demonstrated an air sampling device and the principle of its operation. In addition, everyone could try on the role of an ecologist and take air samples with the help of a sampler.