|Grand Piano Timeline © Aaron Van Fossen (2014)|
Louis Agassiz, in Lane Cooper, ed., Louis Agassiz as a Teacher (1917)—
In 1847 I gave an address at Newton, Massachusetts, before a Teachers' Institute conducted by Horace Mann. My subject was grasshoppers. I passed around a large jar of these insects, and made every teacher take one and hold it while I was speaking. If any one dropped the insect, I stopped till he picked it up. This was at that time a great innovation, and excited much laughter and derision. There can be no true progress in the teaching of natural science until such methods become general.