1.
Using Math in the EFL Classroom
for Language Acquisition
William M. Balsamo
Himeji Dokkyo University
Himeji, Japan
Email: yamataro670@yahoo. com
2.
Why use Math in a language class? “
‘‘ Students are familiar with simple Math, so they
are dealing with a known quantity.
1* We use math every day. We may not go on a
vacation every day and we may no go to work
every day, but there is not one day which passes
that we don't use Math is some form or other.
4"‘ Math is task-related. To use math you must think.
You must calculate. It's a built in activity so
necessary for student involvement.
3.
Currency Conversions
This is a good exercise to have students convert one currency
into another. Then use the language:
e. g. dollars is worth about in yen.
Also useful is using comparatives and superlatives
Task: Give the students a list of items with prices in dollars.
Tell them they have only 50,000 yen. Have them calculate
to see how much they can buy.
* Here are some good websites for currency conversions.
‘* http: //www. xe. com/ ucc/
* http: //finance. yahoo. com/ currency
4.
Using an article from the newspaper
erasing the numbers
4*Yoshinoya to offer Gyudon till
Midnight
4* (The Daily Yomiuri, February 23,2007, page 9)
Fast-food restaurant chain Yoshinoya said it would serve its
gyudon rice bowls topped with U. S. Beef from_(1) a. m. until
midnight, instead of untiI_(2) p. m. as hitherto, starting
March _(3)
The _(4) -hour extension is possible as the procurement of
U. S. beef has become stable.
The company also said it would resume suspended menus of the
extra-large bowl of gyudon prices at _(5) yen, compared
with (6) yen for a regular bowl.
4" a. ) 630 b. )1** c. )9 d. ) 3 e. ) 380 f. ) nine
W
N
/
5.
Recognizing Mathematic Signs
- . Upper Upper
* Math Signs. ,, ,,, ,,, e ﬂight
Plus = +
Minus = -
Multiplication = X Center Left Center Center
Have students place the correct
sign into the proper box.
Lower Left Lower Lower
e. g. Teacher: “Place a minus sign Middle Right
into the Center Right square. ”
6.
Changing Sentences into l/ lath
Formulas
-"'* 1. Teacher says: Ten minus six times two equals ? ??
Students write: 10 - 6 X 2 = 8
2. Teacher says: Nine from twelve plus seven equals? ??
Students write: 12 - 9 + 7 = 10
3. Teacher says: Three multiplied by five less two equals?
Student writes: 3 x 5 - 2 = 13
This is an exercise which involves both a mental task and
careful listening. Students must also realize that division can
be expressed as “divided by” or “into”. Subtraction can be
expressed as “minus” or “from". Addition can be expressed
as “plus” or “and. ” Multiplication can be expressed by “times”
or “ multiplied by. ”
7.
Reading Large Numbers
Students often have difficulty reading large number in English. This is partly
because when they write numbers they do not use commas after each third
digit.
However, I always tell them if they can read three digits. then they can read
twelve! Just mark off every third digit from right to left with a comma and
remember the words thousand, million, billion, trillion. (no real need to go
beyondtrillion)
Therefore:
8.
J
T. =;’lIlJ'{)F; ’l": l"E. LJl'= ;‘ D. 'J'Il"/ .=; "I'. ~‘3l. 'J‘il. ~‘3.. , W Llgilt,
£}l: ‘3'lJElfl§I-5:7, ziiicl l_. l:JLllLJ l‘lJ: —:3is3Llrerii: —,~il'L'~3
; "-. rrierica. is one of the few (ii not only) country wiiich uses
F ziiireriiieii irisiezicl of C9lCll. l3_, pounds instead of kilos, miles instead of
kiloriiei-er: -5, amcl quarts instead of liters.
-borne coil‘/ er-sion exercises can be used to give the students a task
in -uiiisii they can use ‘ooiii their rrizith and language skills
For eigseiiii, -Jl= ,r:
Jui wzilisasl '5-= iiiii1la+3 amgl ‘fairy w2i_| .‘s-= i:_ L2 . :51lwii'= i'5air~3. who iizisl
5%. ! .11:-Ll El _‘9JJL: J': l.” 1 33': JJJL": )?
l, i5l3!l", .* stlgtgiiiss L39 puumt; ‘Jar: ;’_! .UJJ]. :§! J wa1_. -}li': -4 £ xii-5. who is
. |.l': i': )V. l’: lil'a’
it is ! l’: L;)i"‘: l‘: }~3 Pziiireiiieiit ilii , i‘l-aw 'fu, r,': zmsl 315 sl‘: t;li’3‘: l~3 3'': lls’l! J~; '
. , 7lu‘. r'D. '§yo'a »
hlljiidii wziiiiiry 1: iJ2)3§’: l.i": ’
ilote: Of course, students would have access to the conversion charts and the
conversions should not be too difficult.
9.
Class Activity; Using a measuring
tape or ruler — part 1
Activity: (Part 1)
Divide the class into pairs and give
each pair a measuring tape in
both inches and centimeters.
(The tape should be at least two
meters in length. ) Prepare for
them a task worksheet with
about ten things for them to
measure in the classroom.
For example;
4. Measure the distance from the
door to the window.
5. Measure the width of the door.
6. Measure the height of the desk.
10.
Class Activity; Using a measuring
tape or ruler — part 2
"* Teaching Comparatives and
Superlatives
After students have measured the items on the activity
worksheets give then a second worksheet with sentences
which involve the comparative and superlative grammatical
form.
For example: (use the adjectives “wide”, “high”)
1: The window is than the door by
centimeters.
2. The desk is than the chair by
centimeters.
11.
Activity: The Price is Right! !
A simple task which enables students to guess, calculate, convert
currency
Above are four items found in a duty free shop. Guess the price of
each item in dollars. ($1 = 120 yen) Add up the total of the four
items. What is your total? Compare with a partner.
12.
The Price is Right!
:3
E3
(.0
S
3
$ 50.00 $25.00 $ 205.00
TOTAL: $ 291.00
13.
: Ma h eoparcly
Students pick a
category and an
amount from the board.
Then they use this
“ I'll take (category) for
(number) points. ”
‘I I'll take addition for
twenty points. ”
WW
14.
10
20
30
40
50
all iii‘
How much is 420 and
680?
Ifladdzzanduihow
muchdolget?
Two point nine and
three point eight equals
how much?
If I add seventy and
eighty together what
number do I get?
The number of days
found in the month of
May and the number of
weeks in the years
equal what number?
:1 I: ‘. .-I
How much is 18 less
ﬁve?
Thirty-eiht from
One hundred equals
what number?
The number of sides of a
triangle subtracted from
the number found in a
dozen equals what
number?
If I subtract the number
of months in the year
from the number of days
in October I will get what
number?
If I subtract four point
nine from seven point
one I get what number?
I'. | I | "
How much is ten times
ﬁfty?
How much is ﬁve
multiplied by fourteen?
Six times sixteen times
two equals what
number?
Three times the days of
the week equals?
The number of weeks
In a year limes the
number of days in a
week equals what
number?
I‘-‘I 1:
Two into eight
equals?
Eight-one
divided by nine
equals what
number?
One thousand
divided by ten
and then
divided by two
equals what
number?
Seventy-ﬁve
divided by three
and then
divided by ﬁve
equal what
number?
One hundred
divided by three
equals what
number?
ml". |, ',II
How many sides does a
pentagon have?
How rnairy sides does an
octagon have?
What is the name of the line.
which cuts a circle in half?
What is the name of a four-
slded figure. which has all
sides of equal length?
What is the name of a three-
slded figure?
15.
vvwvv. scienceaCademy. com
This website has a great
link called“Basketba| l
4-,8 ~’ } Math. ” It's in English and
+375 ’ 7! Students can work out math
1 " problems Interacting with
g .31.. the computer.
16.
www. quia. com/ shared/ math
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