When applying instructional design principles, the first thing to understand is what the student needs are, after the instruction is completed. Next, we need to develop an acceptable evidence of competency, an appropriate assessment. Then we will be able to develop a course of instructions that will bring the student to the required competency levels. The final action an educator should perform is a review of the course that was taught looking at the material, the delivery, and assessment to make sure that the course was completed correctly. In some areas this is call Backwards Design
Next, determine what constitutes acceptable evidence that the student has acquired:
skills to answer the question on the course material.
There are several types of assessment that can be used
dialogues are just some.
It is important for the instructional design to use the appropriate assessment, they would not want to do a short quizzes on a low-level objective, nor would you use an essay of a high-level objective.
All of these steps are required for a good Instructional design process. However, what step is first and so on is not so important as long as all step are cover. This comes down to personal preference. Like most things, there is no one correct way for developing a course of instruction, and this is good.
Just remember that as long as you use good principle you will meet your goal.