A current problem of the educational policy in the secondary school in Bulgaria is the introduction of innovative teaching methods, leading to new quality and efficiency. Efforts are aimed at finding new approaches in order to provoke the interests of students, stimulate their motivation to learn and expand activities in the process of learning geography in the context of sustainable development and environmental protection. In this sense, object of study are methodologies with such focus, offering real opportunities for application in practice. The issue is also addressed in the present study. The most general characteristic of Maria Montessori's methodology is offered, deriving specific possibilities for application in the practice of teaching geography.