When designing lesson plans, teachers should keep the following in mind. The familiar phenomenom of "in one ear and out the other," can be minimized by using methods with the highest percentage as possible.
We Learn 10% of what we read. 20% of what we hear. 30% of what we see. 50% of what we both see and hear. 60% of what is discussed with others. 80% of what we experience personally. 95% of what we teach someone else.