IDDP structured thinking is simply a fancy phrase for the thinking process we can go through when making a decision. It is often used in class when students are asked how to approach a particular problem. The I stands for identify and is an important first step.
You will need to identify the parts of the problem that you need to solve. The next letter, D, is for differentiate and requires you to reason whether the behaviors involved are right or wrong. Determine how to solve the problem would come next. Finally, you predict how that course of action would work.