8. According to uses Individual contacts Group contacts Mass contacts Farm and home visits Method demonstration Bulletins Office call Leader training meeting Leaf lets Telephone call Lecture meeting News stories Personnel letters Conferences Circular letters Result demonstration Discussion meetings TV, exhibition
9. According to form Written Spoken Objectives or visual Bulletins General meeting Result demonstration Leaflets Farm and home visits Exhibitions News articles Office call Posters Personal letters Telephone call Slides
10.
11. According to DALE Words Numbers Signs symbols Charts, graphs Radio, recording Posters, Flat picture Flash cards, Flannel boards Filmstrips, film slide Exhibits , fieldtrips, demonstration Demonstration, models, objects, specimens Direct purposeful experiences INDIRECT SYMBOLING S OBSERVING DIRECT DOING ABSTRACT CONCRETE CONE OF AUDIO-VISUAL EXPERIANCE
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18. Size of the letters and their visibility Distance from farthest viewer(feet) Height of the letter(in cm) Thickness of the letter (in mm) (1/5 of height) 15 3.00 6.00 30 4.00 8.00 45 5.00 10.00 60 6.00 12.00 75 7.00 14.00 90 8.00 16.00
