Doing serious revision for a GCSE exam while listening to an MP3 player? It sounds like the kind of dubious claim that parents of teenagers would dismiss as optimistic fiction. With Rev-pods for GCSE Business, however, it is true. There are 30 audio files on topics such as partnership, franchises, recruitment, prices, profitability, liquidity and economies of scale. Each lasts about five minutes and finishes with a quick "recap" of five questions. Most incorporate fictional case studies that help make some difficult concepts more comprehensible and more memorable. The Rev-pods for GCSEBusiness can be bought with learning credits. Individual student CDs cost pound;10 while an entire class set is pound;225.