Our students continue to show problems in their ability to evaluate sources critically. Who should help them with this, and how? An English/Composition teacher, the presenter argues that if all partners in student learning are to embrace this challenge, then user-friendly tools are needed. A wide variety of guidelines and checklists have been developed, but students often fail to put these into practice. In this context, the RADAR technique is introduced. Likening the internet to the ocean in its extent and potential hazards, the presenter argues that as a captain needs a RADAR to avoid disaster, so does an information-searcher. The session demonstrates how the five RADAR criteria – Relevance, Authority, Date, Appearance and Reason for writing – can be used to help students develop a critical, constantly-operating scanning mindset for evaluating electronic sources. Two preliminary research studies indicate that undergraduate and postgraduate students respond positively to the RADAR approach.