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 beautif ul 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 2007

Un hachero vende una carretada de maderapara $100. El costo de la

producciones es $80. Cuanto dinero ha hecho?

### Dacă ți-a plăcut:

Apreciază Încarc...

*Similare*