It is common to think of technology as a tool system where a tool is something used by people to get things done. So I might use a hammer to x a loose nail in a fence. The ontological grammar behind this common sense view is that of a subject (me) using a tool (the hammer) to achieve an objective (xing the fence). This ontology implies that the tools we use make no real dierence to who we are and to the objectives we set ourselves. This common sense understanding of what a tool is lies behind the claim that technology in education is just about how we deliver educational goals and should not be thought of as any more than that (Clark, 1994).