Copyright © 2005 by Paul Niquette. All rights reserved.
-- Will Rogers, commenting on geographic migration
during the economic depression of the 1930s.
|or an exercise in the metric system, a certain teacher asked her fourth-grade students to calculate their respective heights in centimeters. As they left the classroom for recess, she wrote their names on the blackboard alongside their heights in two lists as follows:|
|"Which group is taller?" asked the
teacher, when the
The students immediately set about to calculate the average heights of the two groups. They determined that the Okies were taller than the Calies by 3.6 centimeters (136.3 vs 132.7).
The teacher smiled and took chalk in hand. The students watched as she crossed out a name from one of the lists and added it to the other list.
"Do the calculations again," she said,
clapping the chalk
dust from her hands. "You will see that the
average heights of both
the Okies and the Calies have increased!"