The evolution in teaching math since the 1950s:

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 2000s

If you have special needs or just feel you need assistance because of

race, color, religion, sex, age, childhood memories, criminal

background, then don't answer and the correct answer will be provided for you.

There are no wrong answers.