The article analyzes the methods and techniques of environmental education in order to teach biology in accordance with the age characteristics of schoolchildren. In addition, an application was proposed that will help to form an age-related environmental culture of the student in the process of teaching biology, theoretically substantiating the good sides of the development of age-related educational abilities of students. A study was also conducted on the level of environmental culture of each student according to their own and age characteristics. At the same time, climate change is currently taking place as a result of the reduction of Kazakhstan's biodiversity and the use of fossil resources, and to prevent this situation and preserve the ecosystem, it is important to form a new ecological culture with a fundamental change in people's attitude to nature. The main focus here is on improving environmental literacy of students and educating environmental protection for the conservation of biological diversity in Kazakhstan for sustainable development.