The following field exercise is designed for use with Leaving Certificate students. It is based on Maynooth, Co. Kildare, a town of approximately 5,000 inhabitants plus a large third level student population attending St. Patrick's College. The town has grown rapidly over the past sevetal years, becoming increasingly a dormitory settlement for Dublin. The exercise outlined here need not be carried out in Maynooth, as it may be readily adapted for use in any town or city area for which County Development Plan information is available. The exercise was "roadtested" byagroup of AGTI members on 16th May 1992, and I gratefully acknowledge their helpful comments on that occasion.