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?

- Teaching Math In 1950
- Teaching Math In 1960
- Teaching Math In 1970
- Teaching Math In 1980
- Teaching Math In 1990
- Teaching Math In 2010
Un hachero vende una carretada de maderapara $100. El costo de la producciones es $80.

Cuanto dinero ha hecho?

Because of the evolution in teaching math since the 1950s:

A logger sells a truckload of lumber for $100. His cost of production is 4/5 of the price.

What is his profit?_____.

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?

A logger sells a truckload of lumber for $100. His cost of production is $80. Did he make

a profit? Yes or No

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.

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.)