The influence of atmospheric air on human health was talked about, questions about the properties and composition of air were answered. Inspectors of the Central Territorial Administration of the Ministry held an environmental lesson on the topic "What do we breathe in?" for students of MBOU "Gymnasium No. 75" of the Moscovsky district of Kazan. Specialists engaged children in a game where they divided the factors of atmospheric air pollution along natural and anthropogenic routes of influence. Also, a quiz "Guess who I am?" was held for students, during which they determined which tree a particular drawing represented. The students were active, took part in the games with pleasure and showed their eco-knowledge. "Children learn about the world around them through games. The knowledge and skills acquired at a young age contribute to the correct attitude and safe behavior in nature," the specialists of the Central Technical University noted.