An environmental lesson “Take care of your planet, because there is no other one in the world” took place in the “Lyceum No. 35” of the city of Kazan. Interactive panels, three-dimensional figures of animals and birds, multimedia, equipment for laboratory research - all this is now available in eco-classes of "LyceumNo. 35". In addition to the fascinating information, the eco-lesson contained creative tasks, board games, unusual handouts.