The evolution in teaching math in America, 1950s to 2020.

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.

7.   Teaching Math in 2020

Unhachero  vende una carrtada de maderapara 100 pesos. El costo de la produccioneses 80  pesos. Cuanto dinero ha hecho?

Thanks Randy