A Decision-Making-Exercise, using virtual fieldwork, on the best option to reduce river flooding in Cowbridge area, contains data on the history of flooding in the area, outlines of the different options considered by Environmental Agency Wales, the different economic costs and the environmental impact once built. Whiteboard and independent student activities use OS maps, constructor’s diagrams, old newspapers, spider diagrams, calculations. Photographs with sound commentary allow students to visualise and assess the success of the chosen scheme