Education is facing challenges and issues that arise both on the changing needs of modern society and on difficulties to which it has always been difficult to offer effective solutions. This paper, considering this general context, briefly introduces the research field of Educational Technology and identifies and discusses two main lines of evolution that have characterized this sector from its beginning. Then, some perspectives that depict the current situation are proposed. The aim is to sketch a framework to support the (...) understanding of the variety of approaches and research questions assumed by research studies in the field of educational technology. (shrink)