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How do we translate our experience to courses which number students in the hundreds ? Access to telephones , CB and FM radios can save unnecessary trips and be used in the event of an emergency . Fatigue is a major contributor to many farm-related accidents . The number of hand controls may force the operator to allow the tractor to " self-steer " during row end maneuvers or other complex machine tasks . In the search for ways to articulate this concept and to " speak " it for the receiver of an arts experience , many artists abandoned traditional concepts of structure and the nature of artistic unity , challenging prevailing modes of arts expression . Then direct students to navigate to " The Screen : Shaping the Shadow " ( page 2 of " The Screen " section of Playing with Shadows . This attitude was perplexing to many , in light of clients now having access to an attractive purpose designed building , in place of the old tin shed . The URL provided shows a range of links to Geomorphological sites and web portals . Stand in front of the class , and tell them that you are going to " speak " to them without using any words . Note : This lesson plan refers to many images , video , and resources available online . The chairlift can be mounted in such a way on a combine so as to " feed " the operator directly into the cab for easy transfer . Because of their disability , farmers with disabilities are exposed to many potentially hazardous situations that pose little or no threat to the able-bodied farmer . Many a provocation has been offered , and a system of petty oppression pursued towards men , the force and meaning of which would appear as nothing to strangers , and doubtless do appear so to many " ' long-shore " juries and judges .