[Rhodes22-list] Teaching Math

[Brad Haslett]

 Evolution in teaching math since the 1950s:

1. Teaching Math In 1957

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 1967

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 1977

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

4. Teaching Math In 1987

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 1997

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 2008

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