ABSTRACT
The overheadprojector (OHP)isoneofthesimplestandmosteffective visualaids.Itisparticularlyvaluableforkeepingimportantpointsinfrontof yourlistenerswhileyouaretalkingaboutthem.OHPsareusefulfordiagrams, cartoonsandotherillustrations,aswellastext.
