Institutional conditions for development of environmental and ecological education in the Slovak Republic have already been created. From the pre-school age up to the third age of our population it is necessary to give basic environmental knowledge based on the foundations originating in environmental ecology. The out-of-school education ought to be gone along parallel. Both levels need qualified pedagogues. Therefore the key position is the education and preparation of teachers for each school types. This task has to be entrusted to universities having an accreditation for it. In the teacher specialization it is necessary to initiate the qualification Environmental science or Ecology, or Environmental ecology (Tab. 1). Education to ecological thinking needs a new approach to education when the passive acceptance of knowledge will be limited to the unavoidable minimum. Besides lessons and lectures the author suggests including to the preparation of future ecologists two progressive forms of education he considers very significant. It is seminaries study and terrain work as an active form of education.