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I just got this from a friend…and thought I would share it with my blogging friends:
Fifty Years of Math 1957 - 2007 (in the USA )
Last week I purchased a burger at Burger King
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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