The Education Forum

# Changing Standards in teaching Math

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TEACHING MATH IN 1950

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

TEACHING MATH IN 1960

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?

TEACHING MATH IN 1970

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

TEACHING MATH IN 1980

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 and place \$ sign in front of it.

TEACHING MATH IN 1990

By cutting down the beautiful trees, the logger makes \$20 of capitalistic profit. What do you think of this way of making a living? Topic for class participation after answering that question: How did the forest birds and squirrels feel as the logger cut down their trees?

TEACHING MATH IN 2005

El hachero vende in camion carga por \$100. La cuesta por \$100. La cuesta de production is... ?