There are multiple instructional design models and instructional methods that have been developed and implemented over the years. Instructional designers use instructional design models, methods, and theories as a base for online course design and delivery. These instructional methods act as a compass to design for instruction. Below are just a few of today's most commonly applied and practiced instructional design models, instructional methods and theories:
Merrill's First Principles of Instruction
ADDIE Model
Dick and Carey Model
Kemp's Instructional Design Model
Gagné's Nine Events of Instruction
Bloom's Learning Taxonomy
Kirkpatrick's 4 Levels of Training Evaluation