Virtual worlds provide students with educational opportunities to explore and have experiences that are difficult to provide in reality. However, ensuring that students stay motivated and on task is important if the learning goals are to be achieved. Building on the findings of previous studies involving agent-based virtual worlds, adaptive collaborative learning and intelligent agents, we have designed an empathic intelligent virtual agent that provides educational scaffolding to encourage and support the students to understand what they are learning with less frustration. We have identified models of ‘stuck’ behaviour and corresponding empathic response patterns that we have incorporated into the behaviours of the intelligent virtual agents in the XXX Virtual World for science inquiry.