The employees of Baltasinsky Nature Sanctuary gave an environmental lesson in the school of V.Shuban Village and in Malo-Lyzinskaya Secondary School. The lesson was devoted to the Year of Water Protection Zones. During the lesson, the experts told the children about water protection zones, the importance of water in human life, careful attitude to water, as well as of the municipal solid waste, its classification and methods of its disposal. The aim of the lesson was to attract the attention of children and teachers to the problems related to the solid waste. At the end of the environmental lesson the experts of nature sanctuary presented the children a book called “Wildlife habitats”.