In this paper, the criteria for selecting modern learning technologies are discussed and it is suggested that four teaching/learning activities might form the basis for selection combined with a number of types of conceptual representations. The most important aspects for a designer are the match between learning task and its ability to be presented or manipulated by the learner using a decreasing range of information technologies.Fifteenth century Europeans 'knew', that the sky was made of closed concentric crystal spheres, rotating around a central earth and carrying the stars and planets. That 'knowledge' structured everything they did and thought, because it told them the truth. Then Galileo's telescope changed the truth. (Burke, 1986, p.9) Over the past three years we have seen major changes in the information technologies. With the advent of the most recent computers such as the NeXT workstation, we are presented with a black box which enables words, numbers, visuals, sounds, dictionaries, thesauri, and external events to be controlled, manipulated and represented to the user in a variety of forms, often simultaneously, and also to other users linked into a network. Over this period, significant developments have also occurred in conceptualising research into the use of media in education and training. It is this relationship which forms the basis of this paper; the discussion will be divided into three main elements -technology, instructional design, and some ways of bridging the cultures and selecting modern media.