The ADDIE model describes a systematic approach to instructional development. The term is virtually synonymous with instructional systems development (ISD) and evolved informally through oral tradition. It is not a specific, fully elaborated model in its own right but rather an umbrella term that represents a family of models that share a common underlying structure.
ADDIE:
"ADDIE Model of Design" by Fav203 - Own work. Licensed under CC BY-SA 3.0 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:ADDIE_Model_of_Design.jpg#/media/File:ADDIE_Model_of_Design.jpg
The Kemp Design Model (9 steps)
Image from Raquel Rico, Elizabeth O'Connor, Pat Celaya. The Kemp Instructional Design Model. Planning, Producing, and Using Instructional Technologies. http://team2edtc6321.pbworks.com/w/page/27211457/Comparison
A four-level approach to examining classroom use of technology developed by Dr. Ruben Puentedura funded by Maine Learning Technology Initiative.
Transition questions from SAMR: Research and Context (opens in a pdf) By Dr. Ruben Puentedura. Attribution-Noncommercial-Share Alike 3.0
Image created by Dr. Ruben Puentedura, Ph.D. http://www.hippasus.com/rrpweblog/
The Understanding by Design® framework (UbD™ framework) offers a planning
process and structure to guide curriculum, assessment, and instruction. Its
two key ideas are contained in the title: 1) focus on teaching and assessing for
understanding and learning transfer, and 2) design curriculum “backward” from
those ends.