We learn:

?% of what we read 

10% -- Campbell text, handouts, reading assignments

?% of what we hear

20% -- class discussions, lectures

?% of what we see 

30% -- examples, overheads in lecture 

?% of what we both see and hear 

50% -- explanation of figures, diagrams, class discussion of worksheets

?% of what is discussed with others 

70% -- group work, study groups, Biology 131W

?% of what we experience personally. 

80% -- journal entries, use of selected techniques outside of 131W, simulations, HELPING EACH OTHER. 

?% of what we TEACH someone else 

95% -- class/group discussion, muddiest point, practice exam. 

Source:  William Glasser