The
way algebra works is, if you don't know exactly what a number is, you just
call it x. The Persians found that this was a big mathematical
help in solving problems:
PERSIAN
WIFE (suspiciously): How much have you had to drink?
PERSIAN
HUSBAND: I had x beers.
PERSIAN
WIFE: Well, how much is that?
PERSIAN
HUSBAND: It's a (burp) variable.
PERSIAN
WIFE (not wanting to look stupid): Well, OK then.
Historical
footnote: Several years later, when the ancient Romans invented Roman
numerals and it turned out that x was actually equal to 10, there
was big trouble in Persia.
But
getting back to the four co-workers at the restaurant: To figure out how
much each person owes, they would simply use the algebraic equation AEPO1/
4$34.57 + T«( -SA?)( + N- SOB!)( -SITE)(H), where AEPO is the amount each
person owes, T is the tip, SA is whether the waiter has a snotty attitude,
NSOB is whether the waiter has a nice set of buns, SITE is a variable used
if you think somebody in the kitchen is spitting in the entrees, and H is
hydrogen.
Using
this equation, our four co-workers can easily calculate that each one owes
exactly, let's see...carry the 7...OK, it would probably be some- where
between $9 and $11.
So we
see that algebra is a vital tool for our young people to learn. The
traditional method for teaching it, of course, is to require students to
solve problems developed in
1928 by the American Association of Mathematics Teachers Obsessed With
Fruit. For example: "If Billy has twice as many apples as Bobby, and
Sally has seven more apples than Chester, who has one apple in each hand
plus one concealed in his knickers, then how many apples does Ned have,
assuming that his train leaves Chicago at noon?"
The
problem is that these traditional algebra problems are out of date.
Today's young people are dealing with issues such as violence, drugs, sex,
eating disorders, stress, low self- esteem, acne, global warming, and the
demise of Napster. They don't have time to figure out how many apples Ned
has. If they need to know, they will simply ask Ned, and if he
doesn't want to tell them, they will hold him upside down over the toilet
until he does. And then Ned will sue them, plus the school, plus his
parents for naming him Ned in the first place. Ultimately, the American
Civil Liberties Union will get the US Supreme Court to declare that the
number of apples a student has is protected by his constitutional right to
privacy.
So what
is the solution? How do we balance our children's need to learn math
against the many other demands placed on them by modern life? I believe
there is a solution, one that is both simple and practical: I call
it x.