Definition of Instructional design

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"Instructional Design is the practice of creating instructional tools and content to help facilitate learning most effectively." from wikipedia. This give the idea and let people who use the media to learn something, also it's a place to communication."The outcome of this instruction may be directly observable and scientifically measured or completely hidden and assumed. There are many instructional design models but many are based on the ADDIE model with the phases analysis, design, development, implementation, and evaluation."