Subject: FW: Fifty Years of Math
Fifty Years of Math (in the USA)
Last week I purchased a burger for $1.58. The counter girl took my $2 and I was
digging for my change when I pulled 8 cents from my pocket and gave it to her.
She stood there, holding the nickel and 3 pennies, while looking at the screen
on her register. I sensed her discomfort and tried to tell her to just give me
two quarters, but she hailed the manager for help. While he tried to explain the
transaction to her, she stood there and cried. Why do I tell you this? Because
of the evolution in teaching math since the 1950s:
1. Teaching Math In 1950s
A logger sells a truckload of lumber for $100. His cost of production is 4/5 of
the price. What is his
profit?
2. Teaching Math In 1960s
A logger sells a truckload of lumber for $100. His cost of production is 4/5 of
the price, or $80. What is his profit?
3. Teaching Math In 1970s
A logger sells a truckload of lumber for $100. His cost of production is $80.
Did he make a profit?
4. Teaching Math In 1980s
A logger sells a truckload of lumber for $100. His cost of production is $80
and his profit is $20. Your assignment: Underline the number
20.
5. Teaching Math In 1990s
A logger cuts down a beautiful forest because he is selfish and inconsiderate
and cares nothing for the habitat of animals or the preservation of our
woodlands. He does this so he can make a profit of
$20. What do you think of
this way of making a living? Topic for class participation after
answering the
question: How did the birds and squirrels feel as the logger cut down
their
homes? (There are no wrong answers, and if you feel like crying, it's ok.)
6. Teaching Math In 2009
Un hachero vende una carretada de maderapara $100. El costo de la producciones
es $80. Cuanto dinero ha
hecho?
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Last edited by Whelenman; 05/01/09.
