Durabilty:If materials need to be used more than once, or if they are to be used by
many different students, consideration needs to be given to how they can be made robust enough to
last the required distance. Ability to be reproduced:Language teaching institutions are not renowned for giving their staff unlimited access to colour copying facilities, yet many do-it-yourself materials designers continue to produce eye-catching multi-coloured originals, and suffer frustration and disappointment when what emerges from the photocopier is a class-set of grey blurs.