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Escucha el audio
(escucha el audio más de una vez para familiarizarte con los términos que
se introducen y explican)
The verbal
phrase “do the math” means to examine the facts and figures to reach a
conclusion, especially when the answer is very clear.
For example, let’s say I love animals. I spend all my savings on caring
for stray cats and dogs. When my friend asks why I never go on vacation,
I can simply point to my seven cats and five dogs and say, “Money for
vacations? You do the math!”
Of course, before children can do even basic math they must learn to
count.
But counting numbers is not the only meaning of the word “count.”
Consider a famous quote by the scientist Albert Einstein. He reportedly
said, "Not everything that counts can be counted. Not everything that
can be counted counts."
This quote is a pun, a play on words. It plays with two meanings of the
word “count.” Count means to determine the total number of something. It
also means to have value or importance. Things that matter, things that
are important ... count.
Let’s hear count used in a dialogue. These two friends are talking about
an upcoming U.S. election. Take note that a third definition of “count”
-- meaning “depend” -- is used.
A: Are you voting in November?
B: Why should I? My vote doesn’t count.
A: What do you mean it doesn’t count?! After they close the polls
workers count all the votes!
A: What I mean is that voters in D.C. don’t have representatives in
Congress. So, even though my vote for president is officially counted,
my opinion about what should happen in my own neighborhood doesn’t count.
And many people in D.C. are sick of it. You can count on that.
B: Oh, that’s right. I didn’t count that fact. I live in Maryland and
have 10 representatives in Congress. So, my voice does count more than
yours.
A: Hm-mm.
That is a lot of counting!
After counting, many children learn to solve simple addition problems.
They learn that 1+1=2 and 2+2=4 and so on and so on.
However, as we get older we learn that things often don’t add up so
simply. Things that should make sense sometimes don’t, as in this
example:
A: Hi!
B: Hey! Welcome to another Monday at work!
A: Yeah, thanks. Hey, why is Marissa’s purse on her desk? I thought she
started her vacation today.
B: Maybe it’s her second purse. Women do carry more than one purse, you
know.
A: I know that. It’s just odd. She never leaves her purse.
B: Hey, what are doing? It’s rude to go through someone’s purse.
A: I know. But I have a bad feeling. Look. Here are her house keys, her
wallet, even her plane ticket. It says she’s flying out today!
B: You’re right. That doesn’t add up. Something might be wrong. Why
don’t you go to her apartment and I’ll call her boyfriend.
A: I hope Marissa is okay.
B: I know.
Addition and subtraction are both part of math equations. For example, 8
+ 4 = 12 or 2x – 3 = 9. In those equations, the number 4 is a factor of
both 8 and 12. And the letter x is a variable that stands in for the
number 6.
The words “equation,” “factor” and “variable” are all very common in
both casual and formal conversations. So, you could say getting students
to finish all their homework and chores can be difficult when playing
video games is part of the equation. Playing video games is a factor or
variable that makes the situation difficult.
Or, let’s say I volunteer to help organize the holiday party at my
office. But I did not count on how complicated it would be!
There were so many factors to add to the equation. I had to get
permission to rent extra tables and chairs. I had to decorate the
conference room but I couldn’t start until everyone finished their
meetings. And I had to decide whether to hire a D.J. or have live music.
Also, there were so many variables I didn’t know. For example, how many
people would bring guests? Did my colleagues expect to eat dinner or
just snacks?
In the end, the party turned out great. But the process was awful. I’ll
never volunteer again!
Planning a party can be complicated. And as math becomes more complex so
do the expressions.
The lowest common denominator, for example, is the smallest number that
can be divided evenly into a set of fractions.
In conversation, the lowest common denominator refers to the lowest
level of taste. Some television shows in the United States appeal to the
lowest common denominator. They take advantage of everyone’s natural
interest in gossip, violence and romance. These types of program are
often vulgar, tasteless and base.
Glossary:
pun – n. a humorous way of using a word or
phrase so that more than one meaning is suggested vulgar – adj. not having or showing good manners, good taste, or
politeness base – adj. of low value and not very good in some ways
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