Geragogy as a part of gerontology seems to be established in aging societies. Also, geragogy as a form of education for elderly people, learning in the third age, is nowadays an integrated part of agogy. On the other hand, the increase in the number of people of the fourth age, the oldest of the old, handicapped elderly people in nursing homes, is hardly considered in the geragogical discussion. Integrative geragogy in the field of care facilities is given only marginal consideration. In this article we want to present integrative geragogy as a basic part of educational gerontology. We present it as interacting closely with therapeutic education and social work, dealing especially with potentials of the oldest of the old and mentally handicapped elderly people. An outline of the international discussion and the history of geragogy in Germany shows the state-of-the-art in geragogy today. A specific theory and praxeology of integrative geragogy is also presented.