How to learn to save electricity, how to properly handle modern light sources, how important it is to maintain ecological balance on earth. Employees of the Prikamskiy, Central, Priikskiy Territorial Administrations of the Ministry of Ecology and Natural Resources of the Republic of Tatarstan told the pupils about this and not only. Cognitive classes were held at the Gymnasium No. 20 named after Abdulla Alish in Kazan, at the Gymnasium of the city of Aznakayevo and Tavelskaya secondary school of the Mamadyshskiy region.