“4C/ID
1. Learning tasks, which are preferably based on real life tasks and fulfill the role of a back bone for the training program.
2. Supportive information, which is made available to learners because it helps them to perform the problem-solving and reasoning aspects of learning tasks it mainly concerns information on how the domain is organized and how problems in the domain can be systematically approach by the learner.
3. Procedural information which is presented to learners because it helps them to perform the routine aspects of learning tasks. It mainly concerns procedural steps that precisely specify under which conditions a particular action must be taken by the learner.
4.Part task practice, which may provide learners with additional practice for routine aspects of the complex task that need to be developed to a very high level of automaticity.

From Cognitive load theory”