Sharing Teaching Ideas: The Incredible Shrinking Can: Mathematics of Diminishing Returns Revealed and Gening Your Money's Worth in Business Mathematics
Frank Swetz, Bruce Frahm · Mathematics Teacher Learning and Teaching PK-12 · 1993
I like to drink vegetable juice with my lunch. Small cans of this juice are sold in our school cafeteria. Several weeks ago, I noticed a change-the former steel container had been replaced by a streamlined aluminum can and the previous paper label had been eliminated by painting the producetJs message on the cylinder's sw-face. This new can is very attractive. However, when I picked it up, I noticed several disturbing and noncosmetic differences: the top of the can was deeply recessed into the body and a false bottom had been added.