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50 years of Math
50 years of math!!!!!!!!!!!!!!!!!
2009 (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 1950's:
1.. Teaching Math In 1950's
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 1960's
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 1970's
A logger sells a truckload of lumber for $100. His cost of production is
$80. Did he make a profit?
4. Teaching Math In 1980's
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 1990's
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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