'Mike' wrote:

Evolution of British Mathematics Teaching

1. Teaching Mathematics In 1970
A logger sells a lorry load of timber for £100.
His cost of production is 4/5 of the price.
What is his profit?

2. Teaching Mathematics In 1980
A logger sells a lorry load of timber for £100.
His cost of production is 4/5 of the price, or £80.
What is his profit?

3. Teaching Mathematics In 1990
A logger sells a lorry load of timber for £100.
His cost of production is £80.
Did he make a profit?

4. Teaching Mathematics In 2000
A logger sells a lorry load of timber for £100.
His cost of production is £80 and his profit is £20.

Your assignment: Underline the number 20.

5. Teaching Mathematics In 2008
A logger cuts down a beautiful forest because he is selfish and
inconsiderate and cares nothing for the habitat of animals nor for 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. ):-(

Mike

None of your examples contain any shred of mathematics. The subject is alive
and well for those who engage in the real stuff. Just check out the many maths
sites Mike. Try e.g. Sizefitter, I will provide you a courtesy key to the program.