*Fifty
Two Years of math 1959 - 2011 (in the USA )*

__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 2011__

**Un
hachero vende una
carretada de madera para
$100. El costo de la producciones
es $80. Cuanto dinero
ha hecho**