Learning

Studies show that over a period of three days, learning retention is as follows:
10% of what you read.20% of what you hear.30% of what you see.50% of what you see and hear.70% of what you say.90% of what you say as you do (e.g., orally work out a problem)
Pike, R. W. 1989. Creative Training Techniques Handbook. Minneapolis, MN: LakewoodBooks.