American educator named Edgar Dale further explained this through his “Cone of Learning”. Through this he claims that in a duration of 2 weeks time we remember only 10% of what we read, 20% of what we hear, 30% of what we see, 50% of what we hear and see, 70% of what we say and write and 90% of what we actually participate in. The more the involvement, the more we learn and remember in the long run.
Not having heard something is not as good as having heard it; having heard it is not as good as having seen it; having seen it is not as good as knowing it; knowing it is not as good as putting it into practice.