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1. 2. "" " " "" " "" " . Communication . " Edgar Dale " 3. : ( 1987 25. ) ( 2007 107) : . 4. 5. / Who? Says What? In Which Channel ? To Whom? To What Effect? Lasswel Mode 6. : 1- . . 2- . 3- . .. 4- . . 7. Shannon-Weaver Model Source Transmitt er Channel Receiver Destinati on Received Signal Signal 12345 6 8. ( ) . . 9. 10. ):(2(( : )(3)(: ) . -" ()" . - . 11. : 1:Sender . . 12. 2:Receiver : . 13. :Message . . " " Common Expeience. . :Communication Channel : Medium . . 14. :Environment: . . . . 15. : . . . . . . 16. . . . : . : . . . . 17. : : . . . . 18. . : . 19. : : . . . . . . 20. : : . : . : . 21. Education Technology is the development, application and evaluation of systems, techniques and aids to improve the process of human learning. . . . . 22. . : : ... 23. : ( ) . : : .. : . .