• Poze Recente

• 23 November 2019

Knock Knock Whos there? Audrey! Audrey who? Audrey be

• 23 November 2019

Q: How many rec.humor

• 23 November 2019

Q: How many Romanians

• 23 November 2019

How to use an ATM machine…

• 23 November 2019

A

• 23 November 2019

There was a Japanese person,

• 23 November 2019

At the blood donor clinic

• 23 November 2019

Seasonal Medical Report

• 23 November 2019

The Boy Who Wrote To God

• 23 November 2019

Farting guest and dog called Spot

• Comentarii Recente

• Get the Flash Player to see the slideshow.

A History of Math Education

Poza publicata in [ General / Unsorted ]

Saw this one on a professors door:

The evolution of mathematics education

during the last 30 years.

1960s

A peasant sells a bag of potatoes for \$10. His costs amount to 4/5 of his
selling price. What is his profit?

1970s

A farmer sells a bag of potatoes for \$10. His costs amount to 4/5 of his
selling price, i.e. \$8. What is his profit?

1970s (New Math)

A farmer exchanges a set P of potatoes with a set M of money. The cardinality
of the set M is equal to \$10 and each element of M is worth \$1. Draw 10 big
dots representing the elements of M.

The set C of production costs is comprised of 2 big dots less than the set M.
Represent C as a subset of M and give the answer to the question: What is the
cardinality of the set of profits? (Draw everything in red).

1980s

A farmer sells a bag of potatoes for \$10. His production costs are \$8 and his
profit is \$2. Underline the word potatoes and discuss with your classmates.

1990s

A kapitalist pigg undjustlee akires \$2 on a sak of patatos. Analiz this tekst
and sertch for erors in speling, contens, grandmar and ponctuassion, and
than ekspress your vioos regardeng this metid of geting ritch.

Author unknown

Cele mai Votate Pisici